{"title":"Electric Boilers | No Gas, No Flue, 100% Efficient","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eNot sure which type of electric boiler you need? Browse by category:\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003e\u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"\/collections\/combi-boilers\"\u003eElectric Combi Boilers\u003c\/a\u003e\u003c\/strong\u003e — Instant hot water and heating in one unit, no cylinder required\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003e\u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"\/collections\/electric-system-boilers\"\u003eElectric System Boilers\u003c\/a\u003e\u003c\/strong\u003e — Heating circuit boiler for use with a separate hot water cylinder, sealed pressurised systems\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003ca href=\"\/collections\/heat-only-electric-boilers-for-open-vented-gravity-fed-heating-systems\"\u003e\u003cstrong\u003eElectric Heat Only Boilers\u003c\/strong\u003e \u003c\/a\u003e— For open-vented gravity-fed systems, ideal for like-for-like replacement of older regular boilers\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eElectric boilers work in exactly the same way as gas boilers — heating water and distributing it around your central heating circuit — but use electricity as the heat source instead of burning gas or oil. There is no flue, no combustion, no annual gas safety check, and no standing charge for a gas connection. They are 100% efficient at point of use, completely silent, and compatible with solar PV systems, allowing you to heat your home using energy you generate yourself. They are an increasingly popular choice for off-grid properties, new builds, flats, and any home moving away from fossil fuel heating.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eHowever, not all electric boilers are the same — and choosing the wrong type for your system is one of the most common and costly mistakes buyers make. The three types work in fundamentally different ways and are suited to different installations. Understanding the differences before you buy will save you significant time and expense.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eElectric Combi Boilers — Heating and Instant Hot Water in One Unit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAn electric combi boiler provides both central heating and domestic hot water from a single wall-mounted unit, with no need for a separate hot water cylinder, cold water tank, or loft pipework. When you open a hot tap, the boiler switches to domestic hot water mode and heats the water as it flows through — delivering it on demand at mains pressure.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCombi boilers are compact, simple to install, and ideal for flats, smaller homes, and properties where space is limited. The key limitation to understand is \u003cstrong\u003eflow rate\u003c\/strong\u003e — the amount of hot water the boiler can deliver is directly determined by its kW output. A 7kW combi boiler produces approximately 2.9 litres per minute of hot water, which is unlikely to satisfy a standard shower. A 14kW model produces around 5.7 litres per minute, which is generally considered the practical minimum for comfortable single-shower use. If you need to run multiple hot outlets simultaneously, a combi boiler will struggle regardless of output — in that case a system boiler with a cylinder is a better fit.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAt 14kW single phase, a combi boiler draws approximately 63 amps and requires a dedicated 10mm² circuit. Higher outputs require a three-phase supply.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e👉 \u003cstrong\u003e\u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"\/collections\/combi-boilers\"\u003eBrowse Electric Combi Boilers\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eElectric System Boilers — For Sealed Pressurised Systems with a Hot Water Cylinder\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAn electric system boiler heats your central heating circuit and, when paired with an indirect unvented cylinder, also heats your stored domestic hot water via a coil. Unlike a combi boiler, it does not produce hot water on demand — it relies on a cylinder to store pre-heated water ready for use. This means it can supply multiple bathrooms and outlets simultaneously without any drop in performance, making it the better choice for family homes with higher hot water demand.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSystem boilers work on \u003cstrong\u003esealed, pressurised systems\u003c\/strong\u003e — there are no cold water tanks in the loft, and the system is filled to a set pressure (typically 1–1.5 bar) directly from the mains. If you currently have loft tanks feeding your heating, you either need to convert to a sealed system at the same time, or opt for a heat only boiler instead.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA separate hot water cylinder is \u003cstrong\u003ealways required\u003c\/strong\u003e with a system boiler. If you want the boiler to heat both the radiators and the hot water, you need an indirect unvented cylinder. If you prefer the cylinder to heat itself independently using its own immersion heater, a direct unvented cylinder is the alternative.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSingle phase models run from 4kW to 14.4kW. Outputs of 16kW and above require a three-phase 400V supply.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e👉 \u003cstrong\u003e\u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"\/collections\/electric-system-boilers\"\u003eBrowse Electric System Boilers\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eElectric Heat Only Boilers — For Open-Vented Gravity-Fed Systems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA heat only electric boiler — also called a regular or conventional boiler — is designed for \u003cstrong\u003eopen-vented systems\u003c\/strong\u003e that use a small feed and expansion tank in the loft to maintain water level and accommodate expansion. It provides central heating only, and hot water is handled separately by your existing cylinder and immersion heater.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis is the correct choice when you are replacing an older regular gas or oil boiler on an existing open-vented system and want a straightforward like-for-like swap without converting the pipework. Attempting to fit a system boiler onto an open-vented circuit without converting it first is a common and expensive mistake — the two types are not interchangeable.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eIf you are unsure which type of system you have, check the loft. Two small cold water tanks feeding your heating and hot water circuit means you have an open-vented system and need a heat only boiler. A pressure gauge and filling loop with no loft tanks means you have a sealed system suited to a system boiler.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e👉 \u003ca href=\"\/collections\/heat-only-electric-boilers-for-open-vented-gravity-fed-heating-systems\"\u003e\u003cstrong\u003eBrowse Electric Heat Only Boilers\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWhich Type Is Right for You? — Quick Summary\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"overflow-x-auto w-full px-2 mb-6\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\"\u003eCombi\u003c\/th\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\"\u003eSystem\u003c\/th\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\"\u003eHeat Only\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eNeeds a cylinder?\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✗ No\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✓ Yes (indirect)\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✓ Yes (existing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eSystem type\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eSealed\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eSealed\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eOpen-vented\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eHot water on demand?\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✓ Yes\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✗ Stored\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✗ Stored\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eMultiple bathrooms?\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✗ Limited\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✓ Yes\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eLoft tanks needed?\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✗ No\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✗ No\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eIf you're still unsure which type suits your property and existing pipework, contact our team — we're happy to help you spec the right solution before you order.\u003c\/p\u003e","products":[{"product_id":"ehc-slimjim-electric-flow-boiler-4kw","title":"EHC SlimJim Electric Flow Boiler 4kW","description":"\u003ch1\u003eEHC SlimJim Electric Flow Boiler 4kW\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEHC SlimJim 4kW Electric Flow Boiler\u003c\/strong\u003e is a compact, fully-electric central heating solution tailored for properties lacking gas supply. Its slim, wall-mounted profile makes it perfect for locations where space is at a premium—such as flats, studios, garden offices, and small homes. The 4kW model serves wet central heating circuits with radiators or underfloor coils and supports both open-vented and sealed heating systems (with optional kit).\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e100% efficient at point of use; no flue, condensate, or emissions\u003c\/li\u003e\n\u003cli\u003eSilent operation \u0026amp; minimalist design; just 912 × 203 × 172 mm, 11 kg\u003c\/li\u003e\n\u003cli\u003eSuitable for radiators and underfloor pipes\u003c\/li\u003e\n\u003cli\u003eSimple dial temperature control (30–80°C)\u003c\/li\u003e\n\u003cli\u003eStatus LEDs and diagnostic indicators for easy troubleshooting\u003c\/li\u003e\n\u003cli\u003eRun-dry water level sensor and high-current thermal cut-out for safety\u003c\/li\u003e\n\u003cli\u003eSuitable for integration with indirect hot water cylinders (S\/Y plan systems)\u003c\/li\u003e\n\u003cli\u003eNo annual service required; low maintenance for convenience\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer warranty for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eEHCSJIM4KW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage \/ Phase\u003c\/td\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent (Max)\u003c\/td\u003e\n\u003ctd\u003e17 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCircuit Protection\u003c\/td\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd\u003e6 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBTU Output\u003c\/td\u003e\n\u003ctd\u003e13,648\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (HxWxD)\u003c\/td\u003e\n\u003ctd\u003e912 × 203 × 172 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e30–80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Class\u003c\/td\u003e\n\u003ctd\u003eErP D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eWall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater System\u003c\/td\u003e\n\u003ctd\u003eOpen-vented or sealed (optional kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eSmall homes, flats, studios, garden offices\u003c\/li\u003e\n\u003cli\u003eWet heating circuits with radiators or underfloor heating\u003c\/li\u003e\n\u003cli\u003eSpaces requiring silent, compact, and low-maintenance heat\u003c\/li\u003e\n\u003cli\u003eIntegration with indirect hot water cylinders (\"S\" or \"Y\" plan)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEHC SlimJim 4kW Electric Flow Boiler (EHCSJIM4KW)\u003c\/li\u003e\n\u003cli\u003eUser and installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose EHC SlimJim 4kW Electric Flow Boiler?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eZero emissions, 100% efficiency, and silent operation\u003c\/li\u003e\n\u003cli\u003eUltra-compact, easy to install and maintain\u003c\/li\u003e\n\u003cli\u003eComprehensive safety features as standard\u003c\/li\u003e\n\u003cli\u003eNo mandatory annual service—cost-effective over time\u003c\/li\u003e\n\u003cli\u003eReliable with a 5-year manufacturer guarantee\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822465556829,"sku":"EHCSJIM4KW","price":745.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/slimjim-boiler_98d27065-9cd8-47e4-8f9e-a6972fb01c44.png?v=1750936002"},{"product_id":"ehc-slimjim-electric-flow-boiler-7kw","title":"EHC SlimJim Electric Flow Boiler 7kW","description":"\u003ch1\u003eEHC SlimJim Electric Flow Boiler 7kW\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEHC SlimJim 7kW Electric Flow Boiler\u003c\/strong\u003e is a compact, fully-electric heating solution designed to deliver efficient and silent wet central heating where space is at a premium. This boiler is ideal for small homes, flats, or properties without a gas supply, offering simple integration with radiators, underfloor heating, or indirect hot water cylinders. Its minimalist design allows discreet installation in kitchen cupboards or other tight utility spaces, making it a popular choice for renovations and modern homes.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e100% efficiency at point of use – no flue, condensate, or emissions\u003c\/li\u003e\n\u003cli\u003eUltra-compact, slimline design (903 × 203 × 172 mm; ~11 kg)\u003c\/li\u003e\n\u003cli\u003eVirtually silent in operation (\u0026lt;15 dB)\u003c\/li\u003e\n\u003cli\u003eSuitable for central heating only, or for use with hot water cylinders (“S” or “Y” plan)\u003c\/li\u003e\n\u003cli\u003eRuns traditional radiators or wet underfloor heating\u003c\/li\u003e\n\u003cli\u003eSimple front control panel with temperature dial (30–80°C)\u003c\/li\u003e\n\u003cli\u003eDiagnostic indicators for heat\/fault notification\u003c\/li\u003e\n\u003cli\u003eWater Level Sensor protects against dry-running and heat exchanger damage\u003c\/li\u003e\n\u003cli\u003eIntegrated, insulated stainless steel heat exchanger minimizes heat loss\u003c\/li\u003e\n\u003cli\u003eHigh temperature safety cut-out for overheat protection\u003c\/li\u003e\n\u003cli\u003eNo annual service required\u003c\/li\u003e\n\u003cli\u003e5-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eEHCSJIM7KW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e7 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage \/ Phase\u003c\/td\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent (Amps)\u003c\/td\u003e\n\u003ctd\u003e~29 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (HxWxD)\u003c\/td\u003e\n\u003ctd\u003e903 × 203 × 172 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e30°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Efficiency\u003c\/td\u003e\n\u003ctd\u003e100%, ErP D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Pressure\u003c\/td\u003e\n\u003ctd\u003eSuitable for open-vented and sealed systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Level\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;15 dB (virtually silent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eSmall to medium-sized homes or flats lacking a gas supply\u003c\/li\u003e\n\u003cli\u003eRenovations, extensions, studios, garden offices, or where space is limited\u003c\/li\u003e\n\u003cli\u003eWet central heating with radiators or underfloor heating\u003c\/li\u003e\n\u003cli\u003eCompatible with indirect cylinders for domestic hot water\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEHC SlimJim 7kW Electric Flow Boiler (EHCSJIM7KW)\u003c\/li\u003e\n\u003cli\u003eUser and installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose EHC SlimJim 7kW Electric Flow Boiler?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eZero local emissions and silent, maintenance-free operation\u003c\/li\u003e\n\u003cli\u003eSpace-saving design for flexible, unobtrusive installation\u003c\/li\u003e\n\u003cli\u003eRobust safety controls and user-friendly operation\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer warranty for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822465589597,"sku":"EHCSJIM7KW","price":760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/slimjim-boiler_7650d378-0bd7-45b8-b71f-1c955b2b7f7e.png?v=1750935928"},{"product_id":"ehc-slimjim-electric-flow-boiler-12kw","title":"EHC SlimJim Electric Flow Boiler 12kW","description":"\u003ch1\u003eEHC SlimJim Electric Flow Boiler 12kW\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEHC SlimJim 12kW Electric Flow Boiler\u003c\/strong\u003e is a compact, fully-electric boiler designed for efficient wet central heating where installation space is at a premium. Ideal for homes or apartments lacking a gas supply, this boiler operates virtually silently and is suitable for both traditional radiator heating and underfloor systems. Compatible with open-vented or sealed heating systems, it offers the flexibility of central heating only or integration with indirect hot water cylinders for DHW (domestic hot water).\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e100% efficiency at point of use—no flue, condensate, or emissions\u003c\/li\u003e\n\u003cli\u003eMinimalist, slimline design: fits in kitchen cupboards or tight utility spaces\u003c\/li\u003e\n\u003cli\u003eRuns quietly, with no moving combustion parts\u003c\/li\u003e\n\u003cli\u003eSimple user interface with temperature control dial (30°C–80°C)\u003c\/li\u003e\n\u003cli\u003eFront-mounted heat\/fault diagnostic indicators\u003c\/li\u003e\n\u003cli\u003eStainless steel, insulated heat exchanger for energy retention\u003c\/li\u003e\n\u003cli\u003eRun-Dry water level sensor prevents overheating in case of water loss\u003c\/li\u003e\n\u003cli\u003eBuilt-in high current thermal cut-out for safety\u003c\/li\u003e\n\u003cli\u003eNo mandatory annual servicing required\u003c\/li\u003e\n\u003cli\u003eCompatible with “S” and “Y” plan heating configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eEHCSJIM12KW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage \/ Phase\u003c\/td\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent (Amps)\u003c\/td\u003e\n\u003ctd\u003e~50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (HxWxD)\u003c\/td\u003e\n\u003ctd\u003e912 × 203 × 172 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e30°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Efficiency\u003c\/td\u003e\n\u003ctd\u003e100%, ErP D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Pressure\u003c\/td\u003e\n\u003ctd\u003eSuits open-vented or sealed systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Level\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;15 dB (virtually silent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eEHC SlimJim Electric Flow Boiler 12kW Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eSmall- to medium-sized residential properties without gas supply\u003c\/li\u003e\n\u003cli\u003eWhere flue installation is not possible\u003c\/li\u003e\n\u003cli\u003eRenovations, extensions, lofts, or conversions where space is limited\u003c\/li\u003e\n\u003cli\u003eWet heating circuits (radiators or underfloor heat)\u003c\/li\u003e\n\u003cli\u003eCompatible with indirect hot water cylinder (system or S-plan setups)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEHC SlimJim 12kW Electric Flow Boiler (EHCSJIM12KW)\u003c\/li\u003e\n\u003cli\u003eUser and installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose EHC SlimJim 12kW?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e100% electric with no local emissions and silent running\u003c\/li\u003e\n\u003cli\u003eInstalled almost anywhere due to compact, space-saving design\u003c\/li\u003e\n\u003cli\u003eSimple, safe, and reliable with integrated safety controls\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer warranty for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822465622365,"sku":"EHCSJIM12KW","price":825.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/slimjim-boiler_1f249094-0881-4f55-8468-c8fc0a030499.png?v=1750935785"},{"product_id":"ehc-electric-flow-boiler-10kw","title":"EHC SlimJim Electric Flow Boiler 10kW","description":"\u003ch1\u003eEHC SlimJim Electric Flow Boiler 10kW\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEHC SlimJim 10kW Electric Flow Boiler\u003c\/strong\u003e is a highly efficient, fully-electric central heating solution designed for properties where space and flexibility are crucial. Its compact, wall-mounted form makes it ideal for small homes, flats, studios, garden offices, or areas where gas is unavailable. The 10kW output is suitable for wet radiator systems and underfloor heating, supporting both open-vented and sealed settings. This model is virtually silent in operation and offers advanced safety and easy user controls.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e100% efficient at point of use – no flue, condensate, or emissions\u003c\/li\u003e\n\u003cli\u003eCompact, slimline design: 912 × 203 × 172 mm; only 11 kg\u003c\/li\u003e\n\u003cli\u003eSilent running for discreet installation in cupboards or utility areas\u003c\/li\u003e\n\u003cli\u003eCompatible with radiators and wet underfloor heating\u003c\/li\u003e\n\u003cli\u003eCan be used for central heating only, or with an indirect cylinder for domestic hot water (“S” or “Y” plan)\u003c\/li\u003e\n\u003cli\u003eEasy-to-use front panel with temperature control dial (30–80°C), status and diagnostic LEDs\u003c\/li\u003e\n\u003cli\u003eStainless steel, insulated heat exchanger for minimal energy loss\u003c\/li\u003e\n\u003cli\u003eUnique Run-Dry Water Level Sensor protects the heat exchanger from running dry\u003c\/li\u003e\n\u003cli\u003eHigh current thermal cut-out for safety and soft start to avoid power surges\u003c\/li\u003e\n\u003cli\u003eNo annual service required; low maintenance\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer’s warranty (upon registration)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eEHCSJIM10KW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e10 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage \/ Phase\u003c\/td\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent (Max)\u003c\/td\u003e\n\u003ctd\u003e~42A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (HxWxD)\u003c\/td\u003e\n\u003ctd\u003e912 × 203 × 172 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e30–80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBTU Output\u003c\/td\u003e\n\u003ctd\u003e34,121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eWall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Class\u003c\/td\u003e\n\u003ctd\u003eErP D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eOpen-vented or sealed circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eElectric Flow Boiler Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eSmall to medium homes, flats, garden offices, or properties without gas\u003c\/li\u003e\n\u003cli\u003eWet radiator and underfloor heating systems\u003c\/li\u003e\n\u003cli\u003eOptional integration with indirect hot water cylinders (“S” or “Y” plan)\u003c\/li\u003e\n\u003cli\u003eInstallations needing a discreet, compact, and virtually silent solution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEHC SlimJim 10kW Electric Flow Boiler (EHCSJIM10KW)\u003c\/li\u003e\n\u003cli\u003eUser and installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose EHC SlimJim 10kW?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e100% efficient and zero local emissions\u003c\/li\u003e\n\u003cli\u003eSpace-saving, silent, and easy to install and maintain\u003c\/li\u003e\n\u003cli\u003eRobust safety features including Run-Dry water level sensor\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer warranty for long-term peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822465687901,"sku":"EHCSJIM10KW","price":770.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/slimjim-boiler_e676003d-c5e6-4e22-87c0-88862f69e17f.png?v=1750935460"},{"product_id":"ehc-electric-flow-boiler-14-4kw","title":"EHC SlimJim Electric Flow Boiler 14.4kW","description":"\u003ch1\u003eEHC SlimJim Electric Flow Boiler 14.4kW\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEHC SlimJim 14.4kW Electric Flow Boiler\u003c\/strong\u003e is a compact and highly efficient electric boiler designed for wet central heating and, optionally, for use with indirect hot water cylinders. Ideal for properties where space is tight and a gas-free solution is needed, it features a minimalist, wall-mountable design and advanced, reliable electric heating technology. The SlimJim operates virtually silently and delivers powerful, responsive performance for radiators or underfloor heating in larger homes, flats, or commercial premises.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e 14.4kW, suitable for larger rooms and higher heating demands\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Efficiency:\u003c\/strong\u003e All energy consumed is converted to usable heat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Compact Design:\u003c\/strong\u003e Just 912 × 203 × 172 mm; easy to fit into cupboards or utility areas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVirtually Silent Operation:\u003c\/strong\u003e No combustion; minimal noise (approx. 15dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for Central Heating or Hot Water:\u003c\/strong\u003e Use for radiators, underfloor heating, or with a compatible indirect cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Safety Features:\u003c\/strong\u003e Unique Run-Dry Water Level Sensor, insulated stainless steel heat exchanger, high current overheat cut-out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser-Friendly Controls:\u003c\/strong\u003e Easy-to-use temperature control dial, LED heat\/fault indicators, front panel access\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Maintenance:\u003c\/strong\u003e No annual gas safety check, quick to install and service\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5-Year Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible System Compatibility:\u003c\/strong\u003e Supports both open-vented and sealed heating circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 Stage Modulation:\u003c\/strong\u003e Improved efficiency, soft-start operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e14.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent (Max)\u003c\/td\u003e\n\u003ctd\u003e~60A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (HxWxD)\u003c\/td\u003e\n\u003ctd\u003e912 × 203 × 172 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e30°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBTU Output\u003c\/td\u003e\n\u003ctd\u003e49,161\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eWall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Class\u003c\/td\u003e\n\u003ctd\u003eErP D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eOpen-vented or sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Level\u003c\/td\u003e\n\u003ctd\u003e~15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eElectric Flow Boiler Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eLarge domestic homes, flats, or light commercial spaces needing a gas-free heating solution\u003c\/li\u003e\n\u003cli\u003eWet radiator systems and underfloor heating\u003c\/li\u003e\n\u003cli\u003eIntegration with indirect unvented hot water cylinders (S or Y plan)\u003c\/li\u003e\n\u003cli\u003eRetrofit projects where compactness and installation flexibility are valued\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEHC SlimJim 14.4kW Electric Flow Boiler (EHCSJIM14.4KW)\u003c\/li\u003e\n\u003cli\u003eUser and installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose EHC SlimJim 14.4kW?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eReliable, robust, and silent 100% electric heating for larger properties\u003c\/li\u003e\n\u003cli\u003eEffortless installation—no flue or gas line required\u003c\/li\u003e\n\u003cli\u003eComprehensive safety, advanced modulation, and 5-year warranty for peace of mind\u003c\/li\u003e\n\u003cli\u003ePerfect for both central heating and combined system\/hot water installations\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822465753437,"sku":"EHCSJIM14KW","price":890.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/slimjim-boiler.png?v=1750935351"},{"product_id":"ehc-fusion-astro-v2-electric-wall-mounted-combi-boiler-12kw","title":"EHC Fusion Astro V2 12kW Single Phase Electric Combi Boiler — No Flue Electric Heating for Small Properties","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eEHC Fusion Astro V2 12kW Single Phase Electric Combi Boiler (ASTRO12KW.V2)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted electric combination boiler\u003c\/strong\u003e providing central heating and on-demand domestic hot water with \u003cstrong\u003eno flue, no gas connection, and no annual Gas Safe inspection\u003c\/strong\u003e. The V2 generation introduces \u003cstrong\u003eweather compensation\u003c\/strong\u003e, a \u003cstrong\u003ebuilt-in programmer with LCD display\u003c\/strong\u003e, and improved diagnostics over the original Astro. At 12kW on a single 230V phase, it is best suited to well-insulated properties with one bathroom and a shower — delivering up to \u003cstrong\u003e5 litres per minute of hot water\u003c\/strong\u003e at a 30°C temperature rise. The straight valve kit is now included as standard. Backed by a \u003cstrong\u003e5-year warranty\u003c\/strong\u003e.\n  \u003c\/p\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e12 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSingle phase output\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e5 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDHW (30°C rise)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e100%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e32 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOperating noise\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e5 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e. System must be flushed in accordance with \u003cstrong\u003eBS 7593\u003c\/strong\u003e before commissioning. Boiler interlock (programmer + thermostat) is required by Part L of the Building Regulations. A magnetic filter must be fitted on the heating return as a warranty condition. Warranty requires registration; a magnetic filter installation is a condition of the warranty.\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — Install Anywhere\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith no combustion and no exhaust gases, the Astro V2 requires \u003cstrong\u003eno flue penetration\u003c\/strong\u003e. It can be sited in kitchens, utility rooms, airing cupboards, garages, or any accessible location where the electrical supply can be run — ideal for listed buildings, flats without external walls available for flue, and properties where gas restrictions apply.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Weather Compensation (V2)\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Fusion Astro V2 introduces \u003cstrong\u003eweather compensation\u003c\/strong\u003e — the boiler automatically adjusts its output flow temperature based on external conditions, reducing energy consumption by up to 15% compared to fixed-temperature operation. This also reduces on\/off cycling and extends the life of the heating elements.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Built-in Programmer \u0026amp; LCD Display\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Astro V2 includes an \u003cstrong\u003eintegrated programmer and LCD control panel\u003c\/strong\u003e, removing the need for a separate external programmer. The display shows operating mode, flow temperature, system pressure, and active fault codes. External smart thermostat compatibility is also supported via the volt-free control input.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 100% Efficient — ~100% of Input to Heat\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAll electrical input is converted directly to heat — there is no flue loss, no combustion inefficiency, and no standby heat loss from a hot water store (in combi mode). The ErP rating is \u003cstrong\u003eD for heating and A for hot water\u003c\/strong\u003e. When powered from renewable electricity (solar PV, green tariff), the boiler operates with zero direct carbon emissions.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Suitable for Radiators \u0026amp; Underfloor Heating\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Astro V2 supports heating flow temperatures from \u003cstrong\u003e30°C to 80°C\u003c\/strong\u003e, making it suitable for both conventional panel radiators (typically 60–80°C) and underfloor heating systems (typically 35–55°C). The adjustable output temperature allows the boiler to be correctly set for either application without modification.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Advanced Diagnostics \u0026amp; WRAS Approved\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe V2 incorporates \u003cstrong\u003eintegral system diagnostics\u003c\/strong\u003e that display fault codes directly on the LCD panel — reducing call-out time by enabling the installer to identify faults quickly. Internal RCD protection and a high-current thermal cut-out provide safety layers. \u003cstrong\u003eWRAS approved\u003c\/strong\u003e for connection to the domestic water supply.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 5-Year Warranty — Valve Kit Now Included\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003e5-year warranty\u003c\/strong\u003e subject to conditions (registration required). The Astro V2 now comes with the straight valve kit included — 2× ¾\" F × 22mm angled valves (CB153) for heating connections and 2× ½\" F × 15mm angled valves (CB154) for DHW connections — previously sold separately. The optional \u003cstrong\u003eCompliance Installation Pack\u003c\/strong\u003e adds programmer, thermostat, filter, inhibitor, and cleaner for a fully compliant one-box installation.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Quiet — 32 dB(A) Operation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eRated at \u003cstrong\u003e32 dB(A) operating noise\u003c\/strong\u003e — comparable to a quiet library whisper — the Astro V2 is suitable for installation adjacent to bedrooms, living areas, and home offices without noise nuisance. No combustion roar, no flue fan, and no firing sequence. The ErP smart pump modulates for efficiency rather than running at full speed continuously.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — 12kW Single Phase\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ SKU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eEHC (The Electric Heating Company) — \u003cstrong\u003eASTRO12KW.V2\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric combi (heating + on-demand DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e12 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase 230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLoad Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e52 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCircuit Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e63A \/ 30mA RCD\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e16 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e5 litres\/min\u003c\/strong\u003e at 30°C temperature rise\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30°C – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" BSP flow and return\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e½\" BSP cold inlet and hot outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e650 × 440 × 274 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e42 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (heating) \/ A (hot water)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e32 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIncluded in Box\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eBoiler unit; 2× ¾\"F × 22mm angled valve (CB153); 2× ½\"F × 15mm angled valve (CB154)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e (subject to conditions, registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs it suitable as a direct replacement for a gas combi boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Astro V2 connects to the existing heating circuit using the same pipework configuration as a gas combi boiler (flow and return on ¾\" connections, cold mains and hot water on ½\"). No system redesign or radiator changes are required in most cases. The main work is the electrical supply upgrade. The boiler has no flue, so the existing flue opening can be sealed. The single-phase models are best suited to properties previously served by a 12–18kW gas combi; the 24kW three-phase model is suitable for larger properties currently served by a higher-output gas boiler.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat external thermostat controls are compatible?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Astro V2 accepts a \u003cstrong\u003evolt-free (potential-free) external control signal\u003c\/strong\u003e at its control terminals — compatible with any conventional wired room thermostat, and wireless thermostats with a wired relay receiver. Smart thermostats (Hive, Tado, Drayton Wiser) with volt-free outputs work correctly when wired to the external control input. Remove the link across the external control terminals before connecting any external control — leaving the link in place will cause the boiler to run continuously regardless of thermostat state. The built-in programmer can be used alongside or instead of an external programmer.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan it be used with solar PV or off-peak electricity tariffs?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Astro V2 is one of the most straightforward boilers to integrate with solar self-consumption and time-of-use tariffs (Octopus Go, Economy 7, Agile). The built-in programmer can schedule heating to run during cheap-rate or self-generated periods. For direct PV diversion, a solar diverter (such as a myenergi eddi) can be wired to the external control input. Weather compensation (V2 feature) further reduces consumption by modulating output to actual demand rather than firing at full power.\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822467293533,"sku":"ASTRO12KW.v2","price":1349.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ehc-Fusion-Astro-Electric-Combi-Boiler-wall-mountedcopy_d5f77956-47c4-4210-afb3-b3b0dd8dcb8e.png?v=1750932929"},{"product_id":"ehc-fusion-astro-v2-electric-wall-mounted-combi-boiler-14-4kw","title":"EHC Fusion Astro V2 14.4kW Single Phase Electric Combi Boiler","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eEHC Fusion Astro V2 14.4kW Single Phase Electric Combi Boiler (ASTRO14.4KW.V2)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted electric combination boiler\u003c\/strong\u003e providing central heating and on-demand domestic hot water with \u003cstrong\u003eno flue, no gas connection, and no annual Gas Safe inspection\u003c\/strong\u003e. At 14.4kW on a single 230V phase it is the highest single-phase output in the Astro V2 range — delivering up to \u003cstrong\u003e6 litres per minute of hot water\u003c\/strong\u003e at a 30°C rise, suitable for a property with one bathroom and a shower. The V2 generation adds \u003cstrong\u003eweather compensation\u003c\/strong\u003e, a \u003cstrong\u003ebuilt-in programmer with LCD display\u003c\/strong\u003e, and improved diagnostics. The straight valve kit is now included. Backed by a \u003cstrong\u003e5-year warranty\u003c\/strong\u003e.\n  \u003c\/p\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e14.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSingle phase output\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e6 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDHW (30°C rise)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e100%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e32 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOperating noise\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e5 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e. System must be flushed in accordance with \u003cstrong\u003eBS 7593\u003c\/strong\u003e before commissioning. Boiler interlock (programmer + thermostat) is required by Part L of the Building Regulations. A magnetic filter must be fitted on the heating return as a warranty condition. Warranty requires registration; a magnetic filter installation is a condition of the warranty.\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — Install Anywhere\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith no combustion and no exhaust gases, the Astro V2 requires \u003cstrong\u003eno flue penetration\u003c\/strong\u003e. It can be sited in kitchens, utility rooms, airing cupboards, garages, or any accessible location where the electrical supply can be run — ideal for listed buildings, flats without external walls available for flue, and properties where gas restrictions apply.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Weather Compensation (V2)\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Fusion Astro V2 introduces \u003cstrong\u003eweather compensation\u003c\/strong\u003e — the boiler automatically adjusts its output flow temperature based on external conditions, reducing energy consumption by up to 15% compared to fixed-temperature operation. This also reduces on\/off cycling and extends the life of the heating elements.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Built-in Programmer \u0026amp; LCD Display\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Astro V2 includes an \u003cstrong\u003eintegrated programmer and LCD control panel\u003c\/strong\u003e, removing the need for a separate external programmer. The display shows operating mode, flow temperature, system pressure, and active fault codes. External smart thermostat compatibility is also supported via the volt-free control input.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 100% Efficient — ~100% of Input to Heat\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAll electrical input is converted directly to heat — there is no flue loss, no combustion inefficiency, and no standby heat loss from a hot water store (in combi mode). The ErP rating is \u003cstrong\u003eD for heating and A for hot water\u003c\/strong\u003e. When powered from renewable electricity (solar PV, green tariff), the boiler operates with zero direct carbon emissions.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Suitable for Radiators \u0026amp; Underfloor Heating\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Astro V2 supports heating flow temperatures from \u003cstrong\u003e30°C to 80°C\u003c\/strong\u003e, making it suitable for both conventional panel radiators (typically 60–80°C) and underfloor heating systems (typically 35–55°C). The adjustable output temperature allows the boiler to be correctly set for either application without modification.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Advanced Diagnostics \u0026amp; WRAS Approved\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe V2 incorporates \u003cstrong\u003eintegral system diagnostics\u003c\/strong\u003e that display fault codes directly on the LCD panel — reducing call-out time by enabling the installer to identify faults quickly. Internal RCD protection and a high-current thermal cut-out provide safety layers. \u003cstrong\u003eWRAS approved\u003c\/strong\u003e for connection to the domestic water supply.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 5-Year Warranty — Valve Kit Now Included\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003e5-year warranty\u003c\/strong\u003e subject to conditions (registration required). The Astro V2 now comes with the straight valve kit included — 2× ¾\" F × 22mm angled valves (CB153) for heating connections and 2× ½\" F × 15mm angled valves (CB154) for DHW connections — previously sold separately. The optional \u003cstrong\u003eCompliance Installation Pack\u003c\/strong\u003e adds programmer, thermostat, filter, inhibitor, and cleaner for a fully compliant one-box installation.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Quiet — 32 dB(A) Operation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eRated at \u003cstrong\u003e32 dB(A) operating noise\u003c\/strong\u003e — comparable to a quiet library whisper — the Astro V2 is suitable for installation adjacent to bedrooms, living areas, and home offices without noise nuisance. No combustion roar, no flue fan, and no firing sequence. The ErP smart pump modulates for efficiency rather than running at full speed continuously.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — 14.4kW Single Phase\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ SKU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eEHC (The Electric Heating Company) — \u003cstrong\u003eASTRO14.4KW.V2\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric combi (heating + on-demand DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e14.4 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase 230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLoad Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e65 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCircuit Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e80A \/ 30mA RCD\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e16 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e6 litres\/min\u003c\/strong\u003e at 30°C temperature rise\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30°C – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" BSP flow and return\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e½\" BSP cold inlet and hot outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e650 × 440 × 274 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e42 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (heating) \/ A (hot water)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e32 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIncluded in Box\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eBoiler unit; 2× ¾\"F × 22mm angled valve (CB153); 2× ½\"F × 15mm angled valve (CB154)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e (subject to conditions, registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs it suitable as a direct replacement for a gas combi boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Astro V2 connects to the existing heating circuit using the same pipework configuration as a gas combi boiler (flow and return on ¾\" connections, cold mains and hot water on ½\"). No system redesign or radiator changes are required in most cases. The main work is the electrical supply upgrade. The boiler has no flue, so the existing flue opening can be sealed. The single-phase models are best suited to properties previously served by a 12–18kW gas combi; the 24kW three-phase model is suitable for larger properties currently served by a higher-output gas boiler.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat external thermostat controls are compatible?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Astro V2 accepts a \u003cstrong\u003evolt-free (potential-free) external control signal\u003c\/strong\u003e at its control terminals — compatible with any conventional wired room thermostat, and wireless thermostats with a wired relay receiver. Smart thermostats (Hive, Tado, Drayton Wiser) with volt-free outputs work correctly when wired to the external control input. Remove the link across the external control terminals before connecting any external control — leaving the link in place will cause the boiler to run continuously regardless of thermostat state. The built-in programmer can be used alongside or instead of an external programmer.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan it be used with solar PV or off-peak electricity tariffs?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Astro V2 is one of the most straightforward boilers to integrate with solar self-consumption and time-of-use tariffs (Octopus Go, Economy 7, Agile). The built-in programmer can schedule heating to run during cheap-rate or self-generated periods. For direct PV diversion, a solar diverter (such as a myenergi eddi) can be wired to the external control input. Weather compensation (V2 feature) further reduces consumption by modulating output to actual demand rather than firing at full power.\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822467457373,"sku":"ASTRO14.4KW.v2","price":1430.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ehc-Fusion-Astro-Electric-Combi-Boiler-wall-mountedcopy_a4cb1b8f-d024-4f4f-a83b-0c6fc62e844f.png?v=1750930602"},{"product_id":"ehc-fusion-astro-v2-electric-wall-mounted-combi-boiler-24kw-3-phase-400v","title":"EHC Fusion Astro V2 24kW Three Phase 400V Electric Combi Boiler — No Flue Bath and Shower Capable","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eEHC Fusion Astro V2 24kW Three Phase Electric Combi Boiler (ASTRO24KW.V2)\u003c\/strong\u003e is the \u003cstrong\u003ehighest-output model in the Astro V2 combi range\u003c\/strong\u003e, operating on a \u003cstrong\u003ethree-phase 400V supply\u003c\/strong\u003e and delivering central heating and on-demand domestic hot water with no flue required. At 24kW it provides up to \u003cstrong\u003e11 litres per minute of hot water\u003c\/strong\u003e — sufficient to fill a bath at a comfortable flow rate, as well as supplying showers and sinks simultaneously. It is suited to larger properties, multi-bathroom homes, and any premises where a three-phase supply is available and higher heating output is required. The V2 generation adds \u003cstrong\u003eweather compensation\u003c\/strong\u003e, a \u003cstrong\u003ebuilt-in programmer with LCD display\u003c\/strong\u003e, and integral diagnostics. The straight valve kit is now included. Backed by a \u003cstrong\u003e5-year warranty\u003c\/strong\u003e.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ Three-Phase Supply Required\u003c\/strong\u003e — This model requires a \u003cstrong\u003ethree-phase 400V supply\u003c\/strong\u003e. Confirm with your DNO and electrician that three-phase supply is available at the property before ordering. Three-phase load current is \u003cstrong\u003e3 × 43A per phase\u003c\/strong\u003e, requiring a \u003cstrong\u003e3 × 40A MCB\u003c\/strong\u003e and minimum \u003cstrong\u003e5 × 6mm² cable\u003c\/strong\u003e. Properties without three-phase should select the 12kW or 14.4kW single-phase model.\n  \u003c\/div\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e24 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eThree-phase output\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e11 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDHW (30°C rise)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003eBath\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eCapable flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e32 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOperating noise\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:700;\"\u003e5 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e. System must be flushed in accordance with \u003cstrong\u003eBS 7593\u003c\/strong\u003e before commissioning. Boiler interlock (programmer + thermostat) is required by Part L of the Building Regulations. A magnetic filter must be fitted on the heating return as a warranty condition. Warranty requires registration; a magnetic filter installation is a condition of the warranty.\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — Install Anywhere\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith no combustion and no exhaust gases, the Astro V2 requires \u003cstrong\u003eno flue penetration\u003c\/strong\u003e. It can be sited in kitchens, utility rooms, airing cupboards, garages, or any accessible location where the electrical supply can be run — ideal for listed buildings, flats without external walls available for flue, and properties where gas restrictions apply.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Weather Compensation (V2)\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Fusion Astro V2 introduces \u003cstrong\u003eweather compensation\u003c\/strong\u003e — the boiler automatically adjusts its output flow temperature based on external conditions, reducing energy consumption by up to 15% compared to fixed-temperature operation. This also reduces on\/off cycling and extends the life of the heating elements.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Built-in Programmer \u0026amp; LCD Display\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Astro V2 includes an \u003cstrong\u003eintegrated programmer and LCD control panel\u003c\/strong\u003e, removing the need for a separate external programmer. The display shows operating mode, flow temperature, system pressure, and active fault codes. External smart thermostat compatibility is also supported via the volt-free control input.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 100% Efficient — ~100% of Input to Heat\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAll electrical input is converted directly to heat — there is no flue loss, no combustion inefficiency, and no standby heat loss from a hot water store (in combi mode). The ErP rating is \u003cstrong\u003eD for heating and A for hot water\u003c\/strong\u003e. When powered from renewable electricity (solar PV, green tariff), the boiler operates with zero direct carbon emissions.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Suitable for Radiators \u0026amp; Underfloor Heating\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Astro V2 supports heating flow temperatures from \u003cstrong\u003e30°C to 80°C\u003c\/strong\u003e, making it suitable for both conventional panel radiators (typically 60–80°C) and underfloor heating systems (typically 35–55°C). The adjustable output temperature allows the boiler to be correctly set for either application without modification.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Advanced Diagnostics \u0026amp; WRAS Approved\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe V2 incorporates \u003cstrong\u003eintegral system diagnostics\u003c\/strong\u003e that display fault codes directly on the LCD panel — reducing call-out time by enabling the installer to identify faults quickly. Internal RCD protection and a high-current thermal cut-out provide safety layers. \u003cstrong\u003eWRAS approved\u003c\/strong\u003e for connection to the domestic water supply.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 5-Year Warranty — Valve Kit Now Included\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003e5-year warranty\u003c\/strong\u003e subject to conditions (registration required). The Astro V2 now comes with the straight valve kit included — 2× ¾\" F × 22mm angled valves (CB153) for heating connections and 2× ½\" F × 15mm angled valves (CB154) for DHW connections — previously sold separately. The optional \u003cstrong\u003eCompliance Installation Pack\u003c\/strong\u003e adds programmer, thermostat, filter, inhibitor, and cleaner for a fully compliant one-box installation.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Quiet — 32 dB(A) Operation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eRated at \u003cstrong\u003e32 dB(A) operating noise\u003c\/strong\u003e — comparable to a quiet library whisper — the Astro V2 is suitable for installation adjacent to bedrooms, living areas, and home offices without noise nuisance. No combustion roar, no flue fan, and no firing sequence. The ErP smart pump modulates for efficiency rather than running at full speed continuously.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — 24kW Three Phase 400V\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ SKU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eEHC (The Electric Heating Company) — \u003cstrong\u003eASTRO24KW.V2\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric combi (heating + on-demand DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e24 kW\u003c\/strong\u003e (81,891 BTU)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eThree phase 400V \/ 50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLoad Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 × 43 A (per phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCircuit Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 × 40A MCB\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5 × 6 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e11 litres\/min\u003c\/strong\u003e at 30°C temperature rise — bath-fill capable\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30°C – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" BSP flow and return\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e½\" BSP cold inlet and hot outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e650 × 440 × 274 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e42 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (heating) \/ A (hot water)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e32 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIncluded in Box\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eBoiler unit; 2× ¾\"F × 22mm angled valve (CB153); 2× ½\"F × 15mm angled valve (CB154)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e (subject to conditions, registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs it suitable as a direct replacement for a gas combi boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Astro V2 connects to the existing heating circuit using the same pipework configuration as a gas combi boiler (flow and return on ¾\" connections, cold mains and hot water on ½\"). No system redesign or radiator changes are required in most cases. The main work is the electrical supply upgrade. The boiler has no flue, so the existing flue opening can be sealed. The single-phase models are best suited to properties previously served by a 12–18kW gas combi; the 24kW three-phase model is suitable for larger properties currently served by a higher-output gas boiler.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat external thermostat controls are compatible?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Astro V2 accepts a \u003cstrong\u003evolt-free (potential-free) external control signal\u003c\/strong\u003e at its control terminals — compatible with any conventional wired room thermostat, and wireless thermostats with a wired relay receiver. Smart thermostats (Hive, Tado, Drayton Wiser) with volt-free outputs work correctly when wired to the external control input. Remove the link across the external control terminals before connecting any external control — leaving the link in place will cause the boiler to run continuously regardless of thermostat state. The built-in programmer can be used alongside or instead of an external programmer.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan it be used with solar PV or off-peak electricity tariffs?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Astro V2 is one of the most straightforward boilers to integrate with solar self-consumption and time-of-use tariffs (Octopus Go, Economy 7, Agile). The built-in programmer can schedule heating to run during cheap-rate or self-generated periods. For direct PV diversion, a solar diverter (such as a myenergi eddi) can be wired to the external control input. Weather compensation (V2 feature) further reduces consumption by modulating output to actual demand rather than firing at full power.\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822467719517,"sku":"ASTRO24KWv2","price":1700.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ehc-Fusion-Astro-Electric-Combi-Boiler-wall-mountedcopy.png?v=1750930543"},{"product_id":"ehc-comet-pv-electric-system-boiler-8kw","title":"EHC Comet PV 8kW Electric System Boiler Model 1 — EHCEPV8KW — Multi-Output 2 4 6 8kW Solar PV Single Phase","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eEHC Comet PV 8kW Electric System Boiler (Model 1 — EHCEPV8KW)\u003c\/strong\u003e is a \u003cstrong\u003esingle-phase 230V smart electric system boiler\u003c\/strong\u003e with \u003cstrong\u003efour selectable output levels — 2, 4, 6 or 8kW — configured on-site\u003c\/strong\u003e at installation. It functions as a standard electric system boiler for central heating (a hot water cylinder is required for DHW), and can additionally be \u003cstrong\u003eintegrated directly with a solar PV installation\u003c\/strong\u003e to maximise self-consumption of generated electricity. The boiler incorporates a \u003cstrong\u003esix-stage modulating stainless steel heat exchanger\u003c\/strong\u003e, pump, expansion vessel, auto-bypass, and auto-air vent — all within the compact 710mm casing — eliminating the need for separate sealed system components. Weather compensation, energy monitoring, three-zone control capability, and app connectivity (via optional C.MI2 module) are all included. Suitable for small to medium properties, new builds, and off-gas-grid homes with solar PV. \u003cstrong\u003e5-year warranty as standard; 10-year warranty now available\u003c\/strong\u003e for this model.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ System Boiler — Cylinder Required\u003c\/strong\u003e — The Comet PV is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e: it heats the central heating circuit and an indirect hot water cylinder for DHW. A separate hot water cylinder is required. DHW can be provided via S-Plan or Y-Plan with the EHC Twin Channel Heatpack. If no cylinder space is available, consider the EHC Astro V2 combi boiler instead.\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e in accordance with EHC installation instructions and all applicable Building Regulations. Filling loop not supplied.\n  \u003c\/div\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e2–8 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOn-site selectable\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eSingle phase\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003e230V \/ 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eSolar PV\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDirect integration\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e3 zones\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eIndependent circuits\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e10 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty available\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Solar PV Integration — Maximise Self-Consumption\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV can be \u003cstrong\u003eintegrated directly with a solar PV installation\u003c\/strong\u003e to divert surplus generated electricity into heating rather than exporting it to the grid at the lower SEG rate. When PV output exceeds immediate household consumption, the boiler absorbs the surplus — heating the cylinder or running the heating circuit — converting electricity that would earn only the export tariff into heat at the grid import rate value. Particularly valuable for homes already running PV who want to maximise self-use without a diverter device.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ On-Site Multi-Output — Configurable at Installation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eRather than a fixed output, the Comet PV is \u003cstrong\u003econfigured on-site to the required kW level\u003c\/strong\u003e — matched to the property's heat loss calculation. The setting can be adjusted after initial commissioning, so if insulation improves or the system design changes, the boiler's output can be recalibrated without replacement. This gives the installer flexibility and means a single boiler model covers a range of property sizes.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Up to Three Independent Heating Zones\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV manages \u003cstrong\u003eup to three separate heating circuits simultaneously at different flow temperatures\u003c\/strong\u003e — for example, underfloor heating at 40°C, panel radiators at 65°C, and a towel rail circuit — without requiring individual zone mixing valves. This simplifies mixed-emitter system design considerably, making the boiler suitable for new builds and retrofits with diverse heating layouts.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ App Control — EHC C.MI2 Internet Module\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith the optional \u003cstrong\u003eEHC C.MI2 Internet Module (AHP1004)\u003c\/strong\u003e, the boiler connects to the EHC smartphone app for full remote control — heating schedules, temperature settings, energy consumption monitoring, and system status. App connectivity is particularly useful for monitoring solar PV contribution and optimising heating schedules around generation periods. The internet module is sold separately.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Weather Compensation \u0026amp; Energy Monitoring\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003eWeather compensation\u003c\/strong\u003e automatically adjusts the boiler's flow temperature based on outdoor conditions — raising output in cold weather, reducing it on mild days — preventing overcycling and improving system efficiency, especially with UFH. \u003cstrong\u003eEnergy monitoring\u003c\/strong\u003e tracks consumption over time, enabling the homeowner and installer to understand running costs and optimise schedules around cheap-rate tariffs (Economy 7, Octopus Go) or PV generation windows.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Six-Stage Stainless Steel Heat Exchanger\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV's \u003cstrong\u003esix-stage modulating stainless steel heat exchanger\u003c\/strong\u003e steps the boiler's output through six power levels rather than cycling on\/off at full power. This reduces current peaks, smooths demand on the supply, and maintains steadier system temperatures — particularly beneficial on time-of-use tariffs where high instantaneous demand can trigger peak charges. The stainless heat exchanger resists corrosion and is designed to eliminate unnecessary external pipework connections.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ All-in-One Sealed System — No External Pipework\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe boiler incorporates \u003cstrong\u003epump, auto-air vent, expansion vessel, auto-bypass valve, and pressure gauge\u003c\/strong\u003e within the compact casing — there is no requirement for separate external sealed system components. This simplifies the installation significantly, particularly in retrofit scenarios where adding an external expansion vessel, pump station, and auto-air vent to existing pipework would be time-consuming and require additional space.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Anti-Legionella, Frost Protection \u0026amp; Fault Diagnostics\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAutomatic \u003cstrong\u003eanti-legionella cycling\u003c\/strong\u003e periodically raises DHW cylinder temperature above 60°C to comply with hygiene requirements. \u003cstrong\u003eFrost protection\u003c\/strong\u003e activates the boiler at a preset temperature threshold to protect pipework in unoccupied properties. \u003cstrong\u003eBuilt-in fault diagnostics\u003c\/strong\u003e display error codes on the backlit LCD panel, reducing diagnostic call-out time. A high-current thermal cut-out provides additional safety protection.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eOutput Configurations — Model 1 (Single Phase)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003cthead\u003e\u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n\u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eOutput\u003c\/th\u003e\n\u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eBTU\u003c\/th\u003e\n\u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eApprox. Load Current\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6,824 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~9 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e4 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e13,648 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~17 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20,472 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~26 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e8 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e27,297 BTU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e~35 A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — 8kW Model 1\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:8px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ SKU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eEHC (The Electric Heating Company) — \u003cstrong\u003eEHCEPV8KW\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric system boiler (cylinder required for DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase 230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOutput Settings\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2, 4, 6, 8 kW — on-site configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeat Exchanger\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6-stage modulating stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlow Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C – 85°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Zones\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eUp to 3 independent circuits at different temperatures\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegral Components\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003ePump, expansion vessel, auto-air vent, auto-bypass, pressure gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e710 × 418 × 251 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSolar PV Integration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eYes — built in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eApp Control\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eVia EHC C.MI2 Internet Module AHP1004 (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupplied With\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eWired room temperature sensor, outdoor weather compensation sensor, DHW tank temperature sensor, hanging bracket (filling loop not supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (heating)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e standard (registration required) · \u003cstrong\u003e10-year Plus warranty\u003c\/strong\u003e now available for this model\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822468899165,"sku":"EHCEPV8KW","price":1300.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHCEPV8-pack-boilercopy_96627cea-3e8e-412f-a7e9-308751876813.png?v=1750926518"},{"product_id":"ehc-comet-pv-electric-system-boiler-14-4kw","title":"EHC Comet PV 14.4kW Electric System Boiler Model 2  — Multi-Output 7.2 9.6 12 14.4kW Solar PV Single Phase","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eEHC Comet PV 14.4kW Electric System Boiler (Model 2 — EHCEPV14.4KW)\u003c\/strong\u003e is a \u003cstrong\u003esingle-phase 230V smart electric system boiler\u003c\/strong\u003e with \u003cstrong\u003efour selectable output levels — 7.2, 9.6, 12 or 14.4kW — configured on-site\u003c\/strong\u003e at installation. The top single-phase output in the Comet PV range, it is suited to larger domestic properties, multi-zone installations, and off-gas-grid homes where a higher heating output is required without the need for a three-phase supply. Like the 8kW Model 1, it can be \u003cstrong\u003eintegrated directly with a solar PV system\u003c\/strong\u003e to maximise self-consumption, and manages \u003cstrong\u003eup to three independent heating zones\u003c\/strong\u003e simultaneously. The \u003cstrong\u003esix-stage modulating stainless steel heat exchanger\u003c\/strong\u003e, integrated pump, expansion vessel, auto-bypass, and auto-air vent are all housed within the compact casing. App control is available via the optional EHC C.MI2 Internet Module. \u003cstrong\u003e5-year warranty as standard; 10-year warranty now available\u003c\/strong\u003e for this model.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ System Boiler — Cylinder Required\u003c\/strong\u003e — The Comet PV is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e: it heats the central heating circuit and an indirect hot water cylinder for DHW storage. A separate hot water cylinder is required for domestic hot water. For instantaneous DHW without a cylinder on a single-phase supply, consider the EHC Astro V2 14.4kW combi boiler instead.\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e. At 14.4kW single phase, load current is approximately 65A — confirm incoming supply capacity with your DNO before installation. Minimum cable size 16mm². Filling loop not supplied.\n  \u003c\/div\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e7.2–14.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOn-site selectable\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eSingle phase\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003e230V \/ 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eSolar PV\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDirect integration\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e3 zones\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eIndependent circuits\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e10 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty available\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Solar PV Integration — Maximise Self-Consumption\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV can be \u003cstrong\u003eintegrated directly with a solar PV installation\u003c\/strong\u003e to divert surplus generated electricity into heating rather than exporting it to the grid at the lower SEG rate. When PV output exceeds immediate household consumption, the boiler absorbs the surplus — heating the cylinder or running the heating circuit — converting electricity that would earn only the export tariff into heat at the grid import rate value. Particularly valuable for homes already running PV who want to maximise self-use without a diverter device.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ On-Site Multi-Output — Configurable at Installation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eRather than a fixed output, the Comet PV is \u003cstrong\u003econfigured on-site to the required kW level\u003c\/strong\u003e — matched to the property's heat loss calculation. The setting can be adjusted after initial commissioning, so if insulation improves or the system design changes, the boiler's output can be recalibrated without replacement. This gives the installer flexibility and means a single boiler model covers a range of property sizes.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Up to Three Independent Heating Zones\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV manages \u003cstrong\u003eup to three separate heating circuits simultaneously at different flow temperatures\u003c\/strong\u003e — for example, underfloor heating at 40°C, panel radiators at 65°C, and a towel rail circuit — without requiring individual zone mixing valves. This simplifies mixed-emitter system design considerably, making the boiler suitable for new builds and retrofits with diverse heating layouts.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ App Control — EHC C.MI2 Internet Module\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith the optional \u003cstrong\u003eEHC C.MI2 Internet Module (AHP1004)\u003c\/strong\u003e, the boiler connects to the EHC smartphone app for full remote control — heating schedules, temperature settings, energy consumption monitoring, and system status. App connectivity is particularly useful for monitoring solar PV contribution and optimising heating schedules around generation periods. The internet module is sold separately.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Weather Compensation \u0026amp; Energy Monitoring\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003eWeather compensation\u003c\/strong\u003e automatically adjusts the boiler's flow temperature based on outdoor conditions — raising output in cold weather, reducing it on mild days — preventing overcycling and improving system efficiency, especially with UFH. \u003cstrong\u003eEnergy monitoring\u003c\/strong\u003e tracks consumption over time, enabling the homeowner and installer to understand running costs and optimise schedules around cheap-rate tariffs (Economy 7, Octopus Go) or PV generation windows.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Six-Stage Stainless Steel Heat Exchanger\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV's \u003cstrong\u003esix-stage modulating stainless steel heat exchanger\u003c\/strong\u003e steps the boiler's output through six power levels rather than cycling on\/off at full power. This reduces current peaks, smooths demand on the supply, and maintains steadier system temperatures — particularly beneficial on time-of-use tariffs where high instantaneous demand can trigger peak charges. The stainless heat exchanger resists corrosion and is designed to eliminate unnecessary external pipework connections.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ All-in-One Sealed System — No External Pipework\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe boiler incorporates \u003cstrong\u003epump, auto-air vent, expansion vessel, auto-bypass valve, and pressure gauge\u003c\/strong\u003e within the compact casing — there is no requirement for separate external sealed system components. This simplifies the installation significantly, particularly in retrofit scenarios where adding an external expansion vessel, pump station, and auto-air vent to existing pipework would be time-consuming and require additional space.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Anti-Legionella, Frost Protection \u0026amp; Fault Diagnostics\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAutomatic \u003cstrong\u003eanti-legionella cycling\u003c\/strong\u003e periodically raises DHW cylinder temperature above 60°C to comply with hygiene requirements. \u003cstrong\u003eFrost protection\u003c\/strong\u003e activates the boiler at a preset temperature threshold to protect pipework in unoccupied properties. \u003cstrong\u003eBuilt-in fault diagnostics\u003c\/strong\u003e display error codes on the backlit LCD panel, reducing diagnostic call-out time. A high-current thermal cut-out provides additional safety protection.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eOutput Configurations — Model 2 (Single Phase)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003cthead\u003e\u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n\u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eOutput\u003c\/th\u003e\n\u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eBTU\u003c\/th\u003e\n\u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eApprox. Load Current\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e7.2 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e24,567 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~31 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e9.6 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e32,755 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~42 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e12 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e40,945 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~52 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e14.4 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e49,134 BTU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e~65 A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — 14.4kW Model 2\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:8px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ SKU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eEHC (The Electric Heating Company) — \u003cstrong\u003eEHCEPV14.4KW\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric system boiler (cylinder required for DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase 230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOutput Settings\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e7.2, 9.6, 12, 14.4 kW — on-site configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeat Exchanger\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6-stage modulating stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlow Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C – 85°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Zones\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eUp to 3 independent circuits at different temperatures\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegral Components\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003ePump, expansion vessel, auto-air vent, auto-bypass, pressure gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e710 × 418 × 251 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSolar PV Integration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eYes — built in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eApp Control\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eVia EHC C.MI2 Internet Module AHP1004 (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupplied With\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eWired room temperature sensor, outdoor weather compensation sensor, DHW tank temperature sensor, hanging bracket (filling loop not supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (heating)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e standard (registration required) · \u003cstrong\u003e10-year Plus warranty\u003c\/strong\u003e now available for this model\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822469423453,"sku":"EHCEPV14.4KW","price":1330.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHCEPV8-pack-boilercopy.png?v=1750926458"},{"product_id":"ehc-comet-pv-electric-system-boiler-3phase-24kw","title":"EHC Comet PV Electric System Boiler 3 Phase 24kW — Multi-Output 12 16 20 24kW Solar PV Integration App Control Three Zone","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eEHC Comet PV Electric System Boiler (Model 3)\u003c\/strong\u003e is a \u003cstrong\u003ethree-phase 400V smart electric system boiler\u003c\/strong\u003e with \u003cstrong\u003efour selectable output levels — 12, 16, 20 or 24kW — all configurable on-site\u003c\/strong\u003e at the point of installation. It operates as a full-featured standalone electric system boiler, and can additionally be \u003cstrong\u003eintegrated directly with a solar PV installation\u003c\/strong\u003e to maximise self-consumption of generated electricity. Up to \u003cstrong\u003ethree independent heating circuits\u003c\/strong\u003e can be managed simultaneously at different flow temperatures — for example underfloor heating, panel radiators, and a warm air unit — from a single boiler. The boiler features a \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e, weather compensation, automatic anti-legionella, frost protection, and \u003cstrong\u003e41 dB quiet operation\u003c\/strong\u003e. Remote management via smartphone is available with the EHC C.MI2 Internet Module (sold separately). Compatible with all hot water cylinders. \u003cstrong\u003e5-year warranty\u003c\/strong\u003e (registration required).\n  \u003c\/p\u003e\n\n  \u003c!-- ── AMBER 3-PHASE CALLOUT ──────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ Three-Phase 400V Supply Required\u003c\/strong\u003e — Confirm with your DNO and electrician that a three-phase supply is available at the property before ordering. Maximum amp draw at 24kW is \u003cstrong\u003e3 × 34.6A\u003c\/strong\u003e requiring appropriate MCBs and cable sizing. Properties without three-phase should consider the single-phase Comet PV Model 1 (up to 8kW) or Model 2 (up to 14.4kW), or the Astro V2 combi range.\n  \u003c\/div\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e. Always assess the property's incoming electrical supply capacity before specifying. This is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e — it requires a separate hot water storage cylinder for DHW. Filling loop not supplied.\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e12–24 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOn-site selectable\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e3 zones\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eIndependent circuits\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eSolar PV\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDirect integration\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e41 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eQuiet operation\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e5 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Solar PV Integration — Maximise Self-Consumption\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV's headline differentiator: it can be connected \u003cstrong\u003edirectly to a solar PV system\u003c\/strong\u003e to divert excess generated electricity into heating rather than exporting it to the grid at a lower SEG rate. When the PV system is producing more than the property's immediate demand, the boiler ramps up to absorb the surplus — heating water in the cylinder or running the heating circuit — making use of electricity that would otherwise earn only the Smart Export Guarantee tariff. This is particularly valuable for homes with larger PV arrays or battery storage already maximised.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ On-Site Multi-Output — 12, 16, 20 or 24kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eRather than stocking four separate boiler SKUs, the Comet PV Model 3 is \u003cstrong\u003econfigured on-site at installation\u003c\/strong\u003e to the required output — 12, 16, 20 or 24kW — via the boiler's settings. This gives the installer complete flexibility to right-size the boiler to the property's actual heat loss calculation at the point of installation. If the property is upgraded (better insulation, extension), the output can be reconfigured without replacing the boiler. Load current ranges from \u003cstrong\u003e3 × 17.4A at 12kW\u003c\/strong\u003e up to \u003cstrong\u003e3 × 34.6A at 24kW\u003c\/strong\u003e.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Three Independent Heating Zones\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Comet PV can manage \u003cstrong\u003eup to three separate heating circuits simultaneously, each at a different flow temperature\u003c\/strong\u003e. A typical configuration might serve underfloor heating (35–45°C), panel radiators (55–65°C), and a warm air unit — all from the same boiler, without an additional mixing valve or separate controller per zone. This dramatically simplifies the installation of mixed systems and makes the Comet PV ideal for larger homes with multiple heating emitter types.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ App Control via EHC C.MI2 Module\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith the optional \u003cstrong\u003eEHC C.MI2 Internet Module (AHP1004)\u003c\/strong\u003e, the Comet PV connects to the EHC app for full remote management — heating schedules, temperature adjustment, energy consumption monitoring, and system status — from a smartphone. The app interface is particularly useful for monitoring solar PV contribution to heating, allowing the homeowner to optimise self-consumption scheduling around their lifestyle. The internet module is sold separately.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Weather Compensation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWeather compensation adjusts the boiler's \u003cstrong\u003eflow temperature automatically in response to outdoor temperature\u003c\/strong\u003e — reducing flow temperature as the weather warms and raising it as it cools. This prevents the boiler from delivering high-temperature water on mild days (when it isn't needed), reducing cycling and improving system efficiency. Particularly effective combined with UFH, which responds well to lower, steadier flow temperatures, and when used with a solar PV system where running at lower output absorbs more PV generation over a longer period.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Stainless Steel Heat Exchanger — Quiet \u0026amp; Efficient\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e is corrosion-resistant, long-lasting, and designed to eliminate unnecessary external pipework — all primary connections are made internally. The boiler operates at just \u003cstrong\u003e41 dB\u003c\/strong\u003e, quieter than a standard conversation, making it suitable for installation in living spaces, utility rooms adjacent to bedrooms, or open-plan properties without noise concerns. The large backlit LCD display provides clear on-unit feedback without requiring a connected device.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Safety Features — Anti-Legionella \u0026amp; Frost Protection\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAutomatic \u003cstrong\u003eanti-legionella cycling\u003c\/strong\u003e periodically raises the cylinder temperature to above 60°C to eliminate legionella bacteria — a regulatory requirement for domestic hot water systems. Built-in \u003cstrong\u003efrost protection\u003c\/strong\u003e activates the boiler when the system temperature drops to a set threshold, protecting pipework and the cylinder in unoccupied or cold properties. Both functions operate automatically without user intervention.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Compatible with All Hot Water Cylinders\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAs a system boiler, the Comet PV works with \u003cstrong\u003eany indirect hot water cylinder\u003c\/strong\u003e — vented or unvented, standard or solar-compatible. For solar thermal integration, a twin-coil cylinder allows the solar circuit to pre-heat the DHW before the electric boiler tops up. For PV integration, a standard single-coil cylinder and immersion relay control is sufficient. DHW can be provided via S-Plan or Y-Plan wiring with the EHC twin channel heatpack.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── OUTPUT TABLE ───────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eOutput Configurations — Model 3 (Three Phase)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n        \u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eOutput\u003c\/th\u003e\n        \u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eBTU\u003c\/th\u003e\n        \u003cth style=\"padding:9px 14px;text-align:left;font-weight:600;\"\u003eLoad Current\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e12 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e40,945 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 × 17.4 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e16 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e54,594 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 × 23.1 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20 kW\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e68,243 BTU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 × 28.9 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e24 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e81,891 BTU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\u003cstrong\u003e3 × 34.6 A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eEHC (The Electric Heating Company)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eComet PV Model 3 — Multi-Output\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric system boiler (cylinder required for DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eThree phase 400V \/ 50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e24 kW\u003c\/strong\u003e (81,891 BTU)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOutput Settings\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e12, 16, 20, 24 kW — on-site configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Load Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 × 34.6 A (at 24kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlow Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C – 85°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeat Exchanger\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Zones\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eUp to 3 independent circuits at different temperatures\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSolar PV Integration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eYes — direct PV compatibility built in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eApp Control\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eVia EHC C.MI2 Internet Module AHP1004 (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeather Compensation\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAnti-Legionella\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eAutomatic\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFrost Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eYes — automatic\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eLarge backlit LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e41 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e716 × 316 × 235 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCylinder Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eAll indirect hot water cylinders (vented and unvented)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupplied With\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSensors, fixing jig (filling loop not supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (heating)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e (registration required, T\u0026amp;Cs apply)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat is the difference between the Comet PV and the Astro V2?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe \u003cstrong\u003eAstro V2 is a combi boiler\u003c\/strong\u003e — it produces central heating and instantaneous domestic hot water from one unit, with no need for a separate cylinder. It is best suited to smaller properties and is available in single-phase (12kW, 14.4kW) and three-phase (24kW) versions. The \u003cstrong\u003eComet PV is a system boiler\u003c\/strong\u003e — it heats the central heating circuit and an indirect cylinder for DHW storage. It is better suited to larger properties, multi-zone systems, and installations where a higher hot water demand requires stored DHW rather than instantaneous supply. The Comet PV's additional differentiators are built-in solar PV integration, three independent zone management, and app connectivity.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eHow does the solar PV integration work in practice?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Comet PV connects to the property's solar PV system so that when generation exceeds immediate consumption, the surplus is directed into the boiler's heating elements rather than being exported to the grid. The boiler responds to a signal from the PV system or an energy monitoring device indicating available generation, and modulates its output accordingly. The result is that PV energy that would earn only the SEG export tariff instead displaces electricity that would have been purchased from the grid for heating — the effective value of self-consumed electricity is substantially higher than the export rate. EHC's app enables monitoring of PV contribution to heating over time.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eDoes the output need to be set at installation, or can it be changed later?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe output is configured via the boiler's settings and can be \u003cstrong\u003echanged after initial commissioning\u003c\/strong\u003e if required — for example if a heat loss calculation is revised, if the property's insulation is improved, or if the system design changes. This flexibility is one of the key benefits of the multi-output design, and means the installer can stock a single boiler model rather than four separate SKUs. Output setting should be carried out by a qualified installer familiar with the boiler's commissioning procedure.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":57822470111581,"sku":"EHCEPV24KW","price":1820.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHCEPV8-pack-boilercopy_97ac0300-5488-4d28-88c6-88594123fdf2.png?v=1750928769"},{"product_id":"strom-7kw-electric-combi-boiler-single-phase","title":"Strom 7kW Single Phase Electric Combi Boiler - SBSP7C","description":"\u003cdiv style=\"font-size:16px;line-height:1.6;color:#1a1a1a;font-family:Arial,sans-serif;max-width:900px;margin:0 auto;\"\u003e\n\n  \u003c!-- Intro --\u003e\n  \u003cp style=\"font-size:1.05em;margin-bottom:20px;\"\u003e\n    The \u003cstrong\u003eStrom SBSP7C 7kW Single Phase Electric Combi Boiler\u003c\/strong\u003e delivers \u003cstrong\u003ecentral heating and instant domestic hot water from a single compact unit\u003c\/strong\u003e — with no flue, no carbon monoxide risk, and no gas supply needed. Designed from the ground up to replicate the familiar experience of gas, oil or LPG boilers, it is the ideal solution for \u003cstrong\u003eoff-grid properties, gas-free homes, and spaces where a conventional boiler cannot be fitted\u003c\/strong\u003e. Running on a standard \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e and drawing just 32A, the SBSP7C is small enough to fit almost anywhere yet powerful enough to serve a compact home with \u003cstrong\u003eradiators, underfloor heating and a shower\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- Badge strip --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;\"\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003e7kW Output\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eSingle Phase 230V\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eNo Flue Required\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eZero CO Risk\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eErP Hot Water: A\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003e5-Year Warranty\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eSolar Compatible\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eEconomy 10 Ready\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Stat tiles --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e7kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eMax Heat \u0026amp; DHW Output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e4 L\/min\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eDHW Flow Rate (30°C Rise)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e80°C\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eMax Flow Temperature\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e\u0026gt;99%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eThermal Efficiency\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e5 Yrs\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eWarranty (registered)\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Section: Why Electric Combi --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eWhy Choose an Electric Combi Boiler?\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:20px;margin-bottom:26px;\"\u003e\n    \u003cp style=\"margin:0 0 12px;\"\u003e\n      Electric combi boilers are the \u003cstrong\u003eclean alternative to gas for homes off the mains gas network\u003c\/strong\u003e — and increasingly popular in new builds, flats, and rural properties. Unlike oil or LPG, there are no delivery logistics, no external storage tanks, and \u003cstrong\u003eno requirement for an annual Gas Safe service\u003c\/strong\u003e. The SBSP7C combines heating and on-demand hot water in one wall-hung cabinet, \u003cstrong\u003eeliminating the need for a separate hot water cylinder\u003c\/strong\u003e in smaller applications.\n    \u003c\/p\u003e\n    \u003cp style=\"margin:0;\"\u003e\n      With \u003cstrong\u003eover 99% thermal efficiency\u003c\/strong\u003e, virtually every unit of electricity drawn from the supply becomes useful heat. Paired with a solar PV system or an Economy 10 tariff, running costs can be kept highly competitive against fossil-fuel alternatives.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Features grid --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:18px;margin-bottom:26px;\"\u003e\n    \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;\"\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eSerpentine Heat Exchanger\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eStrom's \u003cstrong\u003eproprietary serpentine heating element\u003c\/strong\u003e transfers heat across the full surface area rather than a single hot spot. Multiple independent strands share the load, \u003cstrong\u003eminimising limescale formation\u003c\/strong\u003e and extending element life significantly compared with conventional immersion-style elements.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eFully Self-Modulating\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003e\u003cstrong\u003eOutput modulates down to as little as 1kW\u003c\/strong\u003e, matching heat production precisely to demand. This avoids energy waste during mild weather and \u003cstrong\u003ereduces electricity bills\u003c\/strong\u003e compared with fixed-output boilers.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eBoth the \u003cstrong\u003ecirculation pump and expansion vessel are built in\u003c\/strong\u003e, reducing the number of external components required during installation. The boiler arrives ready to connect, saving time and materials on site.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eTouchscreen Control \u0026amp; LED Display\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eAn \u003cstrong\u003eintuitive LED digital touchscreen\u003c\/strong\u003e provides clear status information and easy temperature adjustment. The display shows the current time, allowing homeowners to confirm the programmer is running correctly at a glance.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eNo Flue — Site Almost Anywhere\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eBecause \u003cstrong\u003eelectric boilers produce no combustion gases, no flue or air supply is needed\u003c\/strong\u003e. The SBSP7C can be installed in a kitchen, airing cupboard, utility room or bedroom — anywhere a standard 230V supply is available.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eZero Carbon Monoxide Risk\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eWith \u003cstrong\u003eno combustion process whatsoever, CO is simply impossible\u003c\/strong\u003e. A significant safety advantage for flats, HMOs, and any property where CO alarm regulations and inspections are a concern.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eNear-Silent Operation\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003e\u003cstrong\u003eMinimal moving parts mean minimal noise\u003c\/strong\u003e. Unlike gas boilers that ignite and modulate a burner, the SBSP7C operates almost silently — ideal for bedrooms, home offices or noise-sensitive installations.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eCompact Wall-Hung Design\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eAt just \u003cstrong\u003e700 × 425 × 250mm\u003c\/strong\u003e, the SBSP7C is smaller than most standard gas boilers. Its slim footprint makes it suitable for tight spaces where a combi replacement was previously impossible.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eSolar \u0026amp; Economy 10 Compatible\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003e\u003cstrong\u003eCompatible with solar PV systems\u003c\/strong\u003e, the SBSP7C can use excess generation to heat your home. On \u003cstrong\u003eEconomy 10 tariffs\u003c\/strong\u003e it competes favourably against oil and LPG on running cost when managed across off-peak periods.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eFrost Protection\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eBuilt-in \u003cstrong\u003efrost protection monitors internal temperature\u003c\/strong\u003e and triggers an automatic defrost cycle when the boiler drops dangerously low — protecting pipework in unheated areas or holiday properties.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eNo Annual Service Required\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eUnlike gas appliances, \u003cstrong\u003eelectric boilers have no combustion components to check, clean or certify annually\u003c\/strong\u003e. Maintenance is limited to system pressure and inhibitor levels — \u003cstrong\u003edramatically reducing ongoing ownership costs\u003c\/strong\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eUnderfloor Heating Compatible\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eWith a \u003cstrong\u003eflow temperature range of 20°C–80°C and modulation down to 1kW\u003c\/strong\u003e, the SBSP7C works equally well with low-temperature underfloor heating circuits and conventional radiator systems.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Installer callout --\u003e\n  \u003cdiv style=\"background:#fff0f0;border-left:4px solid #cc0000;padding:14px 18px;border-radius:4px;margin-bottom:18px;\"\u003e\n    \u003cstrong style=\"color:#cc0000;\"\u003eInstaller Notice\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:0.93em;\"\u003eThis boiler \u003cstrong\u003emust be installed by a competent, certified plumber or heating engineer\u003c\/strong\u003e in accordance with the Building Regulations in force at the time of installation. Electrical connection must comply with BS 7671 and be carried out by a qualified electrician. \u003cstrong\u003eMinimum breaker size: 40A. Minimum cable size: 4mm².\u003c\/strong\u003e Strom Limited are not responsible for faulty installations performed by unqualified tradespeople.\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- DHW advisory --\u003e\n  \u003cdiv style=\"background:#fff8e1;border-left:4px solid #f59e0b;padding:14px 18px;border-radius:4px;margin-bottom:26px;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003eDHW Flow Rate Advisory\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:0.93em;\"\u003eThe 7kW single-phase unit delivers a DHW flow rate of \u003cstrong\u003e4 litres per minute at a 30°C rise\u003c\/strong\u003e — well suited to showers and basins. \u003cstrong\u003eStrom recommend selecting a 3-phase model for applications that include a bath\u003c\/strong\u003e, as the higher outputs of 18–24kW units are better matched to bath-filling demands.\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Technical spec table --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eFull Technical Specification — SBSP7C\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;overflow:hidden;margin-bottom:26px;\"\u003e\n    \u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.93em;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;width:55%;\"\u003eModel \/ Part Number\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eSBSP7C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMaximum Heat Output\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e7kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003ePhase \/ Supply Voltage\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eSingle Phase \/ \u003cstrong\u003e230V AC\u003c\/strong\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eCurrent Draw\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e32A\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e40A\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMinimum Cable Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e4mm²\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMax. Flow Temperature\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e80°C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMin. Flow Temperature\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e20°C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDHW Default Temperature\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e45°C (user adjustable when outlet open)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMax. Heating System Pressure\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e1.5 Bar\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMin. Heating System Pressure\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e0.5 Bar\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMax. DHW Pressure\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e6 Bar\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDHW Flow Rate (30°C Rise)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e4 litres\/min\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eHeating Connection Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e¾\" Male (flexi hoses recommended)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDHW Connection Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e½\" Male (flexi hoses recommended)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003ePRV Connection Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e15mm Compression (female)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e700 × 425 × 250mm\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eErP Domestic Hot Water Rating\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003eA\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eErP Heating Rating\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eD\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eThermal Efficiency\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u0026gt;99%\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMin. Modulation Level\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e1kW\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eIntegrated Pump\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eIntegrated Expansion Vessel\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eFlue Required\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eNo\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eControls Interface\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eLED Digital Touchscreen\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eFrost Protection\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes — automatic defrost cycle\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eSolar PV Compatible\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eEconomy 10 Tariff Compatible\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eCylinder Compatibility\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eVented \u0026amp; unvented indirect cylinders\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eFor Indoor Use Only\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eManufacturer Warranty\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\n\u003cstrong\u003e5 Years\u003c\/strong\u003e (registered within 45 days at stromltd.com\/guarantee)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDefault Warranty (unregistered)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e1 Year\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eManufacturer\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eStrom Limited — ISO Accredited, UK\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Installation requirements --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eInstallation Requirements\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:20px;margin-bottom:26px;font-size:0.93em;\"\u003e\n    \u003cp style=\"margin:0 0 10px;\"\u003e\u003cstrong\u003eElectrical:\u003c\/strong\u003e Dedicated \u003cstrong\u003e40A MCB\u003c\/strong\u003e on a \u003cstrong\u003e4mm² cable\u003c\/strong\u003e from your consumer unit. Must be wired by a Part P qualified electrician. Confirm your existing consumer unit has capacity before ordering.\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 10px;\"\u003e\u003cstrong\u003ePlumbing:\u003c\/strong\u003e The system must be flushed to \u003cstrong\u003e10% of mains PPM (chloride and otherwise)\u003c\/strong\u003e prior to first fill. If retrofitting into an existing system, a \u003cstrong\u003epower flush must be completed\u003c\/strong\u003e to remove debris from radiators and pipework. Use flexi hoses on all connections.\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 10px;\"\u003e\u003cstrong\u003eSystem pressure:\u003c\/strong\u003e Fill the heating circuit when cold to \u003cstrong\u003e1.0–1.5 Bar\u003c\/strong\u003e. The filling loop must comply with current Water Regulations and must be removed and capped after filling.\u003c\/p\u003e\n    \u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eInhibitor:\u003c\/strong\u003e Add a suitable central heating inhibitor (e.g. Fernox F1 or equivalent) to protect the heat exchanger and system components. System water quality directly affects boiler longevity and warranty validity.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eFrequently Asked Questions\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:8px 16px;margin-bottom:26px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan the SBSP7C replace my existing gas combi boiler?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eThe SBSP7C has been designed to replicate the combi boiler experience\u003c\/strong\u003e familiar from gas, oil or LPG systems. You will need a competent engineer to reconfigure the pipework and remove the gas components. At 7kW single phase the \u003cstrong\u003eDHW flow rate of 4 L\/min suits showers and basins well\u003c\/strong\u003e; for bath-filling applications a 3-phase model is recommended.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eDo I need a hot water cylinder with a combi boiler?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eNo — hot water is heated on demand directly from the mains cold supply\u003c\/strong\u003e; there is no storage tank or cylinder required for DHW. The SBSP7C can, however, also work in conjunction with a vented or unvented indirect cylinder for system configurations that require stored hot water.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eHow do I register for the 5-year warranty?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003eRegister at \u003cstrong\u003estromltd.com\/guarantee within 45 days of purchase\u003c\/strong\u003e using the registration card supplied in the box and the details from your original merchant invoice. Only the \u003cstrong\u003elegal owner of the building\u003c\/strong\u003e can register. If not registered within 45 days the warranty defaults to 12 months.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eIs the boiler compatible with solar panels?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e The SBSP7C is compatible with solar PV systems and can use excess generation to run the boiler, \u003cstrong\u003esignificantly reducing running costs\u003c\/strong\u003e during sunny periods. For optimum solar integration consider adding a power diverter such as a myenergi eddi to automatically redirect surplus export.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eDoes the boiler need a service every year?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eNo annual service is required.\u003c\/strong\u003e Because there are no combustion components, there is nothing equivalent to a gas boiler's annual safety inspection. Routine maintenance is limited to checking system pressure and ensuring the water inhibitor concentration remains adequate.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan I control the boiler with a room thermostat or smart thermostat?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003eYes. The SBSP7C accepts a \u003cstrong\u003estandard room thermostat connection\u003c\/strong\u003e and is compatible with a wide range of programmable and smart thermostats. Strom also offer a \u003cstrong\u003eControls Pack A bundle\u003c\/strong\u003e which includes a programmable RF room stat for wireless control.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhat is the default hot water temperature?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003eThe DHW temperature is set to \u003cstrong\u003e45°C by default\u003c\/strong\u003e. The user can adjust this using the increase\/decrease buttons on the touchscreen, but \u003cstrong\u003eonly while a hot water outlet is actively open\u003c\/strong\u003e — a safety feature to prevent scalding from excessive stored heat.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- Related products --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eFrequently Bought Together\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;border-radius:0 0 6px 6px;padding:16px;\"\u003e\n    \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;\"\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003eSmart Room Thermostat\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eProgrammable RF stat for wireless boiler control\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003emyenergi eddi Solar Diverter\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eRedirect surplus solar PV to your boiler automatically\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003eMagnetic System Filter\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eProtects the heat exchanger from debris and magnetite\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003eUnvented Hot Water Cylinder\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eFor system configurations requiring stored hot water\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954485240157,"sku":"SBSP7C","price":1150.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_ca2662e2-d9d0-46dc-abae-efede8275572.png?v=1751972890"},{"product_id":"strom-11kw-electric-combi-boiler-single-phase","title":"Strom 11kW Electric Combi Boiler Single Phase 230V - SBSP11C Instant Hot Water No Flue Touchscreen","description":"\u003c!-- SEO Product Name: Strom 11kW Electric Combi Boiler Single Phase 230V - SBSP11C Instant Hot Water No Flue Touchscreen --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 11kW Electric Combi Boiler\u003c\/strong\u003e (single-phase, model \u003cstrong\u003eSBSP11C\u003c\/strong\u003e) delivers both central heating and \u003cstrong\u003einstant domestic hot water\u003c\/strong\u003e from a single, compact unit, with no separate hot water cylinder or gas connection needed. Running on a standard \u003cstrong\u003esingle-phase 230V supply\u003c\/strong\u003e, it provides up to \u003cstrong\u003e5.5 litres per minute\u003c\/strong\u003e of hot water at a 30°C temperature rise, suiting small to medium homes and apartments with one to two bathrooms.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eBuilt around Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e, which spreads heat evenly across the whole element rather than at a single hotspot, the SBSP11C pairs \u003cstrong\u003etouchscreen digital controls with LED display\u003c\/strong\u003e, an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, and near-silent operation at just \u003cstrong\u003e15dB\u003c\/strong\u003e. With no flue, no gas supply and zero carbon monoxide risk, it's a practical, space-saving replacement for a gas or oil combi in properties without a three-phase supply.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e11 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5.5 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eDHW Flow @ 30°C Rise\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e48 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician \u0026amp; Plumber Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e wiring regulations and current building regulations. An electrical installation certificate and \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for the new circuit, and are also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCheck Mains Flow Rate Before Buying\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe 5.5 litres\/minute DHW figure is the boiler's maximum output at a 30°C temperature rise; actual delivered hot water flow depends on the \u003cstrong\u003eincoming mains water pressure and flow\u003c\/strong\u003e. Strom recommend sizing by heating demand first and then checking that the mains flow rate is adequate for the intended use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Matters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eA proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e should be carried out before purchase. Electric boilers are 100% efficient at the point of use, so replacing an older gas or oil boiler like-for-like will typically oversize the new unit, which Part L 2022 of the Building Regulations advises against.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCombi Design, No Cylinder Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeating and \u003cstrong\u003einstant hot water from one compact unit\u003c\/strong\u003e, removing the need for a separate hot water cylinder and freeing up airing cupboard or plant room space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat spreads evenly across the \u003cstrong\u003ewhole element surface\u003c\/strong\u003e rather than at a single hotspot, improving heat-up speed and reducing limescale-related performance loss over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eNear-Silent 15dB Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003eminimal moving parts\u003c\/strong\u003e, the boiler runs quietly enough to be installed close to living areas or bedrooms without disturbance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen \u0026amp; LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003e\n\u003cstrong\u003eIntuitive touchscreen digital controls\u003c\/strong\u003e give precise temperature adjustment, scheduling and live system status.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe \u003cstrong\u003ecirculation pump and expansion vessel are built in\u003c\/strong\u003e, simplifying installation and reducing the number of separate parts to source and fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSolar \u0026amp; Economy Tariff Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWorks alongside a \u003cstrong\u003esolar PV diverter\u003c\/strong\u003e to use surplus generation for water heating, and is well suited to \u003cstrong\u003eEconomy 10\u003c\/strong\u003e and similar time-of-use electricity tariffs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBSP11C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060438331966 \/ 5060797570013\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric Combi Boiler (heating \u0026amp; instant hot water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e11 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e230V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCurrent Draw\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e48 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e50 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating \u0026amp; Hot Water Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. DHW Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6.0 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDHW Flow Rate (30°C Rise)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5.5 litres\/minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating \/ DHW)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD \/ A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar PV diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBSP11C is \u003cstrong\u003e100% electric\u003c\/strong\u003e with no flue, no gas supply and no carbon monoxide risk, making it safe to install in almost any property, including new-builds and urban retrofits.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size property is this suitable for?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eIdeal for \u003cstrong\u003esmall to medium homes or apartments\u003c\/strong\u003e with one to two bathrooms and moderate hot water demand (5.5 l\/min at 30°C rise). Larger properties or higher demand should consider the 14.4kW model.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it work with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, when paired with a \u003cstrong\u003esolar PV diverter\u003c\/strong\u003e it can use surplus solar generation to help heat water, reducing running costs alongside compatible time-of-use electricity tariffs.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow quiet is the boiler in operation?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eVery quiet: Strom quote a \u003cstrong\u003e15dB sound pressure level\u003c\/strong\u003e, making it suitable for installation near living areas or bedrooms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat electrical supply does it need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eA \u003cstrong\u003esingle-phase 230V supply\u003c\/strong\u003e drawing 48A, with a minimum 50A breaker and 10mm² cable recommended; an electrician should always confirm this against the property's actual supply.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it also run underfloor heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, the boiler's maximum flow temperature of 80°C is compatible with underfloor heating systems, which typically run at lower flow temperatures than radiators for efficient operation.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWho can install this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with BS 7671 and current UK building regulations, with full electrical and plumbing checks completed before use.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954495529309,"sku":"SBSP11C","price":1273.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_dca31396-49d4-4bc4-8e02-090258499d18.png?v=1751972915"},{"product_id":"strom-14-4kw-electric-combi-boiler-single-phase","title":"Strom 14.4kW Electric Combi Boiler Single Phase 230V - SBSP15C Instant Hot Water No Flue Touchscreen","description":"\u003c!-- SEO Product Name: Strom 14.4kW Electric Combi Boiler Single Phase 230V - SBSP15C Instant Hot Water No Flue Touchscreen --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 14.4kW Electric Combi Boiler\u003c\/strong\u003e (single-phase, model \u003cstrong\u003eSBSP15C\u003c\/strong\u003e) is the range-topping single-phase combi in Strom's electric boiler line-up, combining \u003cstrong\u003ecentral heating and instant hot water\u003c\/strong\u003e in one compact, flue-free unit. Running on a standard \u003cstrong\u003esingle-phase 230V supply\u003c\/strong\u003e, it delivers up to \u003cstrong\u003e7 litres per minute\u003c\/strong\u003e of hot water at a 30°C temperature rise, suiting larger family homes or properties with higher simultaneous demand where a three-phase supply isn't available.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eBuilt around Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e for fast, even heat transfer, the SBSP15C pairs \u003cstrong\u003etouchscreen digital controls with LED display\u003c\/strong\u003e with an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, running at near-silent \u003cstrong\u003e15dB\u003c\/strong\u003e with zero carbon monoxide emissions at the point of use. It's a future-proof, low-maintenance option for homes moving away from gas or oil, particularly where a single-phase supply is all that's available.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e14.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e7 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eDHW Flow @ 30°C Rise\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e62 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician \u0026amp; Plumber Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e wiring regulations and current building regulations. An electrical installation certificate and \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for the new circuit, and are also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCheck Supply Capacity Before Buying\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e62A on a single-phase supply\u003c\/strong\u003e, requiring a 63A breaker and 10mm² cable. On an older consumer unit with a 60A or 80A main fuse, adding this load may exceed total available capacity — an electrician should check the property's supply and available ways before ordering. Actual delivered hot water flow also depends on incoming mains water pressure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Matters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eA proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e should be carried out before purchase. Electric boilers are 100% efficient at the point of use, so replacing an older gas or oil boiler like-for-like will typically oversize the new unit, which Part L 2022 of the Building Regulations advises against.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCombi Design, No Cylinder Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeating and \u003cstrong\u003einstant hot water from one compact unit\u003c\/strong\u003e, removing the need for a separate hot water cylinder and freeing up airing cupboard or plant room space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat spreads evenly across the \u003cstrong\u003ewhole element surface\u003c\/strong\u003e rather than at a single hotspot, improving heat-up speed and reducing limescale-related performance loss over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eNear-Silent 15dB Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003eminimal moving parts\u003c\/strong\u003e, the boiler runs quietly enough to be installed close to living areas or bedrooms without disturbance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen \u0026amp; LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003e\n\u003cstrong\u003eIntuitive touchscreen digital controls\u003c\/strong\u003e give precise temperature adjustment, scheduling and live system status.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe \u003cstrong\u003ecirculation pump and expansion vessel are built in\u003c\/strong\u003e, simplifying installation and reducing the number of separate parts to source and fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHighest Output in the Single-Phase Range\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAt \u003cstrong\u003e14.4kW\u003c\/strong\u003e, this is the largest single-phase combi Strom offer, giving the most hot water flow available without needing a three-phase supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBSP15C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060438331973 \/ 5060797570029\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric Combi Boiler (heating \u0026amp; instant hot water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e14.4 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e230V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCurrent Draw\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e62 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e63 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating \u0026amp; Hot Water Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. DHW Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6.0 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDHW Flow Rate (30°C Rise)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e7 litres\/minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating \/ DHW)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD \/ A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar PV diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBSP15C is \u003cstrong\u003e100% electric\u003c\/strong\u003e with no flue, no gas supply and no carbon monoxide risk, making it safe to install in almost any property, including new-builds and urban retrofits.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes my consumer unit need upgrading for this model?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eIt depends on existing capacity. This boiler needs a \u003cstrong\u003e63A breaker\u003c\/strong\u003e on a dedicated circuit, which can exceed an older 60A or 80A main fuse's total available supply. An electrician should always check the consumer unit rating, available ways, and total load before installation.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size property is this suitable for?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eIdeal for \u003cstrong\u003elarger homes or properties with higher hot water demand\u003c\/strong\u003e (7 l\/min at 30°C rise) than the 11kW model. For very large properties, three-phase models or multiple units should be considered.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it work with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, when paired with a \u003cstrong\u003esolar PV diverter\u003c\/strong\u003e it can use surplus solar generation to help heat water, reducing running costs alongside compatible time-of-use electricity tariffs.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow quiet is the boiler in operation?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eVery quiet: Strom quote a \u003cstrong\u003e15dB sound pressure level\u003c\/strong\u003e, making it suitable for installation near living areas or bedrooms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it also run underfloor heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, the boiler's maximum flow temperature of 80°C is compatible with underfloor heating systems, which typically run at lower flow temperatures than radiators for efficient operation.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWho can install this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with BS 7671 and current UK building regulations, with full electrical and plumbing checks completed before use.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954497560925,"sku":"SBSP15C","price":1330.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"},{"product_id":"strom-7kw-electric-system-boiler-single-phase","title":"Strom 7kW Single Phase Electric System Boiler SBSP7S — No Flue Off-Grid UFH Vented Unvented Cylinder Compatible","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eStrom 7kW Single Phase Electric System Boiler\u003c\/strong\u003e is a \u003cstrong\u003ecompact, fully self-contained central heating boiler\u003c\/strong\u003e with an integrated pump, expansion vessel, and a unique multi-strand heat exchanger — designed from the ground up to be familiar to installers with experience of gas, oil, or LPG systems. It connects to an indirect hot water cylinder (vented or unvented) for domestic hot water, and circulates water around a conventional radiator or underfloor heating circuit without requiring a flue, gas supply, or annual Gas Safe inspection. \u003cstrong\u003eSuitable for all off-gas-grid properties\u003c\/strong\u003e and for gas conversions where a flue route is not available. Fully self-modulating — the boiler steps down to as little as 1kW, reducing running costs on mild days and on time-of-use tariffs such as Economy 10. \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e when registered within 45 days of purchase.\n  \u003c\/p\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ──────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e working with a qualified heating engineer. The electrical installation must comply with BS 7671 (IET Wiring Regulations) and Part P of the Building Regulations. A \u003cstrong\u003eminimum 40A MCB and 4mm² cable\u003c\/strong\u003e are required on a dedicated circuit from the consumer unit. The boiler requires a double-pole isolation switch. Flexi hoses (¾\") are recommended for the primary heating connections. Fixings are not supplied.\n  \u003c\/div\u003e\n\n  \u003c!-- ── TEAL CYLINDER \/ HOT WATER CALLOUT ──────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ System Boiler — Cylinder Required for Hot Water\u003c\/strong\u003e\u003cbr\u003e\n    The Strom 7kW is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e: it heats the central heating circuit and an indirect hot water cylinder for DHW. \u003cstrong\u003eA separate hot water cylinder is required\u003c\/strong\u003e — it is not a combi boiler and does not produce instantaneous hot water. It is compatible with both \u003cstrong\u003evented (gravity-fed) and unvented (mains-pressure) indirect cylinders\u003c\/strong\u003e. For a complete heating and hot water solution, pair with an appropriate indirect cylinder and wiring centre for zone control.\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e7 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSingle phase 230V\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eNo flue\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSite anywhere\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e~100%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficient\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eModulates\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDown to 1kW\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e5-year\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Multi-Strand Heat Exchanger — Self-Modulating to 1kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWhere most electric boiler competitors use a single heating element strand, the Strom uses \u003cstrong\u003emultiple independent heating strands\u003c\/strong\u003e within a single heat exchanger unit — each strand individually controlled. This enables \u003cstrong\u003efully self-modulating output from as little as 1kW up to 7kW\u003c\/strong\u003e, stepping in fine increments to match demand precisely. On mild days or in well-insulated properties, the boiler runs at a fraction of its rated output rather than cycling on\/off at full power — reducing electricity consumption and improving comfort stability. Modulation also reduces thermal stress on the element, extending component life.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — No Gas — No Annual Safety Certificate\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThere are \u003cstrong\u003eno combustion gases, no flue terminal required\u003c\/strong\u003e, and no obligation to obtain an annual Gas Safe safety certificate. The boiler can be installed in any interior location where an electrical supply can be run — kitchen, utility room, airing cupboard, or garage — regardless of proximity to an external wall. This removes the most common constraint in boiler installation and is particularly important in \u003cstrong\u003elisted buildings, conservation areas, and flats\u003c\/strong\u003e where flue positions are restricted or prohibited by planning conditions.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Integrated Pump, Expansion Vessel \u0026amp; Filter\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Strom system boiler contains \u003cstrong\u003epump, expansion vessel, and a magnetic system filter\u003c\/strong\u003e within the compact 700 × 425 × 250mm body — no separate sealed system kit, external pump, or expansion vessel is required. Compared to a heat-only boiler, this dramatically simplifies installation and reduces the number of external fittings in the airing cupboard or plant room. The \u003cstrong\u003eintegrated filter\u003c\/strong\u003e captures ferrous debris from the heating circuit, protecting the heat exchanger from sludge accumulation without requiring a separate magnetic filter to be fitted to the pipework.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ UFH, Radiators \u0026amp; Vented or Unvented Cylinders\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Strom 7kW is compatible with \u003cstrong\u003econventional panel radiator circuits, underfloor heating (wet), and both vented and unvented indirect hot water cylinders\u003c\/strong\u003e. The adjustable flow temperature range of 20–80°C means it can supply the lower flow temperatures required by underfloor heating manifolds (typically 35–50°C) as well as the higher temperatures needed for radiators in less well-insulated properties. A single wiring centre (S-plan or Y-plan) provides zone control between heating and hot water when combined with a cylinder thermostat and motorised zone valves.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Touch Screen — Near-Silent Operation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003etouch screen control panel\u003c\/strong\u003e provides direct access to flow temperature setting, operating mode selection, and system pressure display without requiring an external controller for basic operation. With \u003cstrong\u003eminimal moving parts\u003c\/strong\u003e — the only significant moving component is the circulation pump — the Strom operates near-silently compared to gas boilers with their combustion fan, ignition sequence, and flue gas noise. This makes it suitable for installation adjacent to living areas, bedrooms, or in open-plan properties where boiler noise would be intrusive.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Economy Tariff Compatible — Off-Grid Ideal\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWhen paired with a hot water cylinder and timed on a \u003cstrong\u003etime-of-use tariff\u003c\/strong\u003e (Economy 10, Octopus Go, Agile), the Strom 7kW system boiler is a competitive heating solution for off-grid properties that would otherwise rely on oil or LPG. The cylinder stores hot water heated during cheap-rate periods; the boiler's modulating output means the heating circuit can also be programmed to run primarily during low-rate windows. \u003cstrong\u003e100% renewable electricity tariffs\u003c\/strong\u003e make this the lowest carbon heating option available for off-gas-grid homes without a heat pump.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — Strom 7kW Single Phase (SBSP7S)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStrom Limited (UK)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eModel Code\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSBSP7S \/ WBSP7S\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric system boiler (cylinder required for DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Heating Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e7 kW\u003c\/strong\u003e — modulates down to 1kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase 230V AC, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLoad Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum MCB \/ Breaker\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e40A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e4mm²\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlow Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C – 80°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. System Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin. System Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" Male BSP (flexi hoses recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15mm compression female\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegral Components\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003ePump · expansion vessel · magnetic system filter · touch screen\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCylinder Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eVented indirect · unvented indirect\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e700 × 425 × 250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eErP Heating Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e — must register at stromltd.com within 45 days of purchase. Defaults to 1 year if not registered.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs 7kW enough to heat my property?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003e7kW is sufficient for a well-insulated property with a heat loss up to approximately 7kW — typically a \u003cstrong\u003e1–3 bedroom flat or smaller house\u003c\/strong\u003e. The starting point is always a heat loss calculation to BS EN 12831, which a heating engineer can carry out. As a rough rule of thumb, a modern well-insulated 2-bedroom house in England might have a heat loss of around 3–5kW, meaning the 7kW model has headroom to spare. For larger or older properties with higher heat loss, the Strom range also offers 11kW and 14.4kW single-phase models. Because the boiler is fully self-modulating, it will run efficiently even if the 7kW rating is significantly higher than the actual heat loss — it simply modulates down rather than cycling.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eDoes this boiler need an annual service?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eUnlike gas or oil boilers, the Strom electric system boiler does \u003cstrong\u003enot require a mandatory annual safety service\u003c\/strong\u003e — there are no combustion components, no heat exchanger flue gases, and no Carbon Monoxide risk that drives the legal servicing requirement for fossil fuel appliances. However, Strom recommend \u003cstrong\u003eperiodic maintenance checks\u003c\/strong\u003e by a qualified person — typically every two to three years — covering system pressure, expansion vessel pre-charge, filter cleaning, and a check of the electrical connections. The integrated magnetic filter should be checked and cleaned annually, and the heating system should be treated with corrosion inhibitor. Keeping Benchmark or equivalent service records is good practice and supports any warranty claim.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan I use this with solar panels?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Strom electric system boiler is \u003cstrong\u003edirectly compatible with solar PV systems\u003c\/strong\u003e. When the property generates more solar electricity than it consumes, a solar diverter (such as the Eddi from myenergi, or an iBoost) can redirect the surplus export to the boiler — running the heating circuit and\/or charging a hot water cylinder with otherwise-wasted generation. The boiler's self-modulation is particularly useful in this context: a diverter can instruct the boiler to consume exactly the surplus available (from 1kW up to 7kW) rather than needing a fixed large load. This is one of the most effective ways to maximise self-consumption on a solar PV installation.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat is the warranty and how do I register?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Strom 7kW system boiler carries a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e, subject to registration and Strom's terms and conditions. Registration must be completed \u003cstrong\u003ewithin 45 days of purchase\u003c\/strong\u003e at stromltd.com using the registration card supplied with the boiler. If the boiler is not registered within 45 days, the warranty defaults to 1 year. The 5-year warranty covers manufacturing defects in materials and workmanship. The guarantee is held by the original purchasing homeowner and is not transferable. Annual servicing records — while not strictly mandatory — will support any warranty claim and demonstrate the system has been properly maintained.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan I replace my existing gas or oil boiler with this?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Strom system boiler is designed to connect to \u003cstrong\u003eexisting radiator and pipework\u003c\/strong\u003e without replacement. The existing radiators, pipework, and indirect cylinder can generally remain in place. The key changes are: removing the old boiler and flue, upgrading the electrical supply to provide a dedicated 40A circuit, and potentially adding zone valve controls if not already fitted. If the existing boiler was a combi (no cylinder), a hot water cylinder will need to be added — this is a more significant installation. If the property currently has a separate cylinder (system or regular boiler setup), the changeover is straightforward. The boiler's ¾\" connections match standard UK heating pipework via flexi hoses.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eIs it compatible with underfloor heating?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Strom 7kW is fully compatible with \u003cstrong\u003ewet underfloor heating (UFH) systems\u003c\/strong\u003e. The flow temperature is adjustable down to 20°C, and typical UFH manifold supply temperatures (35–45°C for screed systems, up to 50–55°C for suspended floor systems) are well within the boiler's operating range. For mixed systems combining underfloor heating with panel radiators at different flow temperatures, a thermostatic blending valve or weather compensation control can be added to the UFH circuit. The boiler's modulating output is particularly well-suited to UFH, which responds best to stable, lower-temperature inputs rather than high-temperature on\/off cycling.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954594947421,"sku":"SBSP7S","price":970.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_3c5371ac-7004-4362-9556-e5d1f43aa4ff.png?v=1751972764"},{"product_id":"strom-11kw-electric-system-boiler-single-phase","title":"Strom 11kW Single Phase Electric System Boiler SBSP11S","description":"\u003cdiv style=\"font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:16px;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.65;\"\u003e\n\n  \u003c!-- INTRO --\u003e\n  \u003cp style=\"font-size:17px;margin:0 0 22px;\"\u003e\n    The \u003cstrong\u003eStrom 11kW Single Phase Electric System Boiler\u003c\/strong\u003e is the self-contained electric heating solution built for medium to large homes. Unlike a heat-only boiler, this unit arrives with an \u003cstrong\u003eintegrated pump and expansion vessel already installed\u003c\/strong\u003e — making it faster to fit and easier to commission. Pair it with an indirect hot water cylinder for a complete, flue-free heating system that runs on 100% electrical efficiency with \u003cstrong\u003ezero carbon monoxide at point of use\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- STAT STRIP --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:0 0 28px;\"\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e11kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eHeat Output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e100%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eEfficient\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e55A\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eDraw @ 230VAC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e5 Yr\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eWarranty (registered)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e700mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eHeight\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CALLOUT: Installer requirement --\u003e\n  \u003cdiv style=\"background:#fff3cd;border-left:4px solid #f59e0b;border-radius:6px;padding:14px 18px;margin:0 0 22px;\"\u003e\n    \u003cstrong style=\"color:#92400e;\"\u003e⚠ Professional Installation Required\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:15px;color:#78350f;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e who is a member of a competent persons scheme. A \u003cstrong\u003ePart P electrical installation certificate\u003c\/strong\u003e is legally required upon completion of any new circuit. Heating pipework must be designed and commissioned by a qualified plumber or heating engineer in accordance with current Building Regulations.\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CALLOUT: System boiler note --\u003e\n  \u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;border-radius:6px;padding:14px 18px;margin:0 0 28px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ System Boiler — Hot Water Cylinder Required\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:15px;\"\u003eThis is a \u003cstrong\u003ecentral heating-only\u003c\/strong\u003e boiler. It does not supply domestic hot water directly. An \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e is required for hot water. The pump and expansion vessel are built in, but you will still need to supply: \u003cstrong\u003eisolation valves, automatic bypass valve, zone valves\u003c\/strong\u003e (if required), and \u003cstrong\u003eexternal heating controls\u003c\/strong\u003e (programmer and room thermostat).\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FEATURES SECTION --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 18px;border-radius:6px 6px 0 0;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:0;\"\u003eKEY FEATURES\u003c\/div\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:14px;padding:16px 0 28px;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e⚙ Integrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe pump and expansion vessel are \u003cstrong\u003efactory-fitted inside the unit\u003c\/strong\u003e, reducing on-site labour and the number of external components to specify. This makes the Strom System Boiler significantly quicker to install than a heat-only alternative.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📄 Touchscreen Digital Control Panel\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eA clear \u003cstrong\u003etouchscreen display\u003c\/strong\u003e provides at-a-glance system status including flow and return temperatures, pump status, frost protection mode and fault codes — giving engineers and homeowners full visibility without removing any panels.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e♻ Patented Serpentine Heat Exchanger\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eStrom's \u003cstrong\u003epatented heat exchanger design\u003c\/strong\u003e distributes heat evenly across the full element surface, eliminating hot spots that cause limescale and corrosion. Multiple heating strands reduce stress on individual components and significantly extend element life.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🔅 Near-Silent, Zero-Emission Operation\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003eNo flue, no combustion, no carbon monoxide\u003c\/strong\u003e — this boiler can be installed in virtually any room. Minimal moving parts keep noise levels negligible, making it ideal for living spaces, utility rooms and airing cupboards alike.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e☉ Solar PV \u0026amp; Underfloor Heating Compatible\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eDesigned to work with \u003cstrong\u003esolar PV divert controllers\u003c\/strong\u003e, surplus generation from your panels can power your heating — reducing running costs further. The wide flow temperature range (20–80 °C) also makes this boiler fully compatible with \u003cstrong\u003eunderfloor heating systems\u003c\/strong\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e⚡ 100% Electrical Efficiency\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eEvery kilowatt drawn from the supply converts directly to useful heat — \u003cstrong\u003eno flue losses, no standing pilot flame\u003c\/strong\u003e. Pair with a green electricity tariff or Economy 10 to maximise savings against oil or LPG alternatives.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e☀ Built-In Frost Protection\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAn onboard frost-protection mode activates automatically to safeguard the boiler and system pipework in cold conditions. For installations in unheated outbuildings, \u003cstrong\u003ean external frost stat wired inline\u003c\/strong\u003e is also recommended.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🔌 Modular \u0026amp; Serviceable by Design\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003efully modular component layout\u003c\/strong\u003e means individual parts — including the heating element — can be replaced without swapping the whole unit. This keeps long-term service costs low and maximises the working life of the installation.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- SPEC TABLE --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 18px;border-radius:6px 6px 0 0;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:0;\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;margin-bottom:28px;\"\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;width:45%;border-bottom:1px solid #c8e6e3;\"\u003eModel \/ SKU\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStrom SBSP11S\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeat Output\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e11 kW\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePhase \/ Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle Phase — 230 VAC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCurrent Draw @ 230 VAC\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e55 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum MCB \/ RCB Breaker\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e63 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e10 mm²\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Temperature Range\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20 °C – 80 °C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Pressure Range\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.5 – 1.5 Bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Flow \u0026amp; Return Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" Male BSP (flexi hoses or push-fit irons recommended)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePRV Connection Size\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15 mm Compression\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e700 × 425 × 260 mm (including wall bracket)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEAN\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5060797570142\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWarranty\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5 years when registered at www.stromltd.com\/guarantee within 45 days of purchase\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;\"\u003eWhat's in the Box\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;\"\u003eSystem boiler, wall fixings \u0026amp; mounting guide, installation manual\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 18px;border-radius:6px 6px 0 0;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:0;\"\u003eFREQUENTLY ASKED QUESTIONS\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 8px 8px;margin-bottom:28px;overflow:hidden;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the difference between this System Boiler and the Strom Heat Only Boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        The key difference is what's built into the unit. The \u003cstrong\u003eSystem Boiler includes an integrated circulating pump and expansion vessel\u003c\/strong\u003e, so fewer external components need to be sourced and fitted by your installer. The Heat Only boiler is a stripped-back unit where pump, vessel and pressure relief valve are all supplied and fitted externally — making it smaller and more flexible in certain system designs, but requiring more on-site work.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat electrical supply and cable does this boiler need?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        At 11kW on 230V single phase, the boiler draws \u003cstrong\u003e55 A\u003c\/strong\u003e. Your installer must provide a \u003cstrong\u003eminimum 63 A MCB\/RCB breaker\u003c\/strong\u003e and a \u003cstrong\u003eminimum 10 mm² cable\u003c\/strong\u003e — though final cable sizing must always be calculated against actual installation conditions (route length, ambient temperature, cable grouping). A linked isolator switch with at least 3 mm contact gap per pole is also required. As a new circuit, a \u003cstrong\u003ePart P electrical installation certificate\u003c\/strong\u003e is a legal requirement on completion.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes this boiler provide domestic hot water?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        No. This is a \u003cstrong\u003ecentral heating-only\u003c\/strong\u003e system boiler. For domestic hot water, an \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e must be installed as part of the overall system. The boiler heats the cylinder via a primary coil. If you need combined heating and instantaneous hot water from a single electric unit, consider the Strom Electric Combi Boiler range instead.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eIs this boiler compatible with underfloor heating?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        Yes. The adjustable \u003cstrong\u003eflow temperature range of 20–80 °C\u003c\/strong\u003e means the boiler can be dialled down to the lower temperatures typically required by water underfloor heating systems (usually 35–45 °C). It is also compatible with \u003cstrong\u003esolar PV divert systems\u003c\/strong\u003e, so surplus electricity from solar panels can be directed to heat the system — reducing daytime running costs.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat heating controls do I need?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        Under Part L of the Building Regulations, external time and temperature controls are mandatory. You can use a \u003cstrong\u003eseparate programmer and room thermostat\u003c\/strong\u003e, or an \u003cstrong\u003eall-in-one programmable room thermostat\u003c\/strong\u003e. The boiler's PCB accepts a standard switch-live signal, making it compatible with most third-party smart thermostats as well as Strom's own programmer and thermostat range.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eHow do I register the 5-year warranty?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        Register online at \u003cstrong\u003ewww.stromltd.com\/guarantee\u003c\/strong\u003e within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e using the details on the registration card supplied with the boiler. Only the legal owner of the building can register. The warranty covers manufacturing defects, parts and labour during the covered period. It does not cover damage caused by poor installation, water ingress from unchecked pipework, or work not organised through Strom.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954601828701,"sku":"SBSP11S","price":999.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_c6b5b4f7-73d3-4e88-957d-98fa093a6d6d.png?v=1751972650"},{"product_id":"strom-14-4kw-electric-system-boiler-single-phase","title":"Strom 14.4kW Electric System Boiler – Single Phase","description":"\u003ch2\u003eStrom 14.4kW Electric System Boiler – Single Phase\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 14.4kW Electric System Boiler\u003c\/strong\u003e is a powerful, flexible solution for larger homes or properties with higher heating demands. With advanced digital controls, integrated pump and expansion vessel, and compatibility with modern heating controls, it’s a future-ready choice for electric central heating.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating only – for use with an indirect hot water cylinder\u003c\/li\u003e\n\u003cli\u003eTouchscreen digital control panel\u003c\/li\u003e\n\u003cli\u003eIntegrated pump and expansion vessel\u003c\/li\u003e\n\u003cli\u003eSerpentine heating element for efficiency\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for near-silent operation\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer’s warranty (registration required)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e14.4kW System Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060797570159\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e14.4kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e62A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd\u003e10mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Flow Temp\u003c\/th\u003e\n\u003ctd\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Flow Temp\u003c\/th\u003e\n\u003ctd\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Connection\u003c\/th\u003e\n\u003ctd\u003e3\/4\" Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePRV Connection\u003c\/th\u003e\n\u003ctd\u003e1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd\u003e700 x 425 x 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eERP Rating (Heating)\u003c\/th\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954608120157,"sku":"SBSP15S","price":1085.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase.png?v=1751972342"},{"product_id":"strom-18kw-electric-system-boiler-three-phase","title":"Strom 18kW Electric System Boiler Three Phase 400V - SBTP18S No Flue Serpentine Heat Exchanger","description":"\u003c!-- SEO Product Name: Strom 18kW Electric System Boiler Three Phase 400V - SBTP18S No Flue Serpentine Heat Exchanger --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 18kW Electric System Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP18S\u003c\/strong\u003e) is engineered for large homes and commercial premises needing robust, high-output central heating without a gas or oil supply. It runs central heating only, paired with an indirect hot water cylinder, and uses Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e to spread heat evenly across the whole element surface, avoiding the hotspots that shorten the life of a conventional single-strand heating rod.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, full-colour touchscreen controls, and \u003cstrong\u003ezero on-site carbon monoxide emissions\u003c\/strong\u003e, this boiler needs no flue at all, making it a practical option for properties off the gas grid or where flueing isn't feasible. Running at \u003cstrong\u003e99%+ efficiency\u003c\/strong\u003e with self-modulating output down to as little as 1kW, it is designed to run near-silently and cost-effectively on Economy 10 and similar time-of-use tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e18 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e27 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e registered with a competent persons scheme, in accordance with \u003cstrong\u003eBS 7671 (IEE Wiring Regulations)\u003c\/strong\u003e. An electrical installation certificate and a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for any new boiler circuit, and this documentation is also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Is Essential\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eStrom advise that a proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e is carried out before purchase. Electric boilers are 100% efficient at the point of use, so a straight like-for-like swap with an older gas or oil boiler will typically \u003cstrong\u003eoversize\u003c\/strong\u003e the unit. Part L 2022 of the Building Regulations requires that boilers are not significantly oversized for the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eSystem Boiler, Not Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003eheating-only system boiler\u003c\/strong\u003e: hot water is provided separately via a vented or unvented indirect hot water cylinder connected to the boiler's heating circuit, not by the boiler itself. If instant combination hot water and heating from one unit is needed, the equivalent Strom Combi Boiler range should be considered instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat is transferred evenly across the \u003cstrong\u003ewhole surface area\u003c\/strong\u003e of the element rather than at isolated hot points, speeding up heat-up time and reducing limescale build-up that would otherwise reduce performance over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMultiple Independent Heating Strands\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWhere many competing boilers rely on a single heating strand for all their output, Strom's element uses \u003cstrong\u003emultiple strands\u003c\/strong\u003e, each independently controlled, spreading electrical stress and enabling \u003cstrong\u003eself-modulation down to as little as 1kW\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eWater-Isolated Heating Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe heating strands are kept \u003cstrong\u003ephysically separate from the system water\u003c\/strong\u003e, sharply reducing the corrosion that shortens the life of conventional immersion-style heating elements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSingle-Unit Replaceable Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUnlike competitor designs that bury an element inside a small internal tank, Strom's heat exchanger is a \u003cstrong\u003esingle replaceable unit\u003c\/strong\u003e, simplifying any future servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculation pump and expansion vessel are built into the boiler casing\u003c\/strong\u003e, reducing the number of separate components an installer needs to source, fit and commission.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen Control With LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA full \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e displays live flow temperature, clock, and system status, with clear icons for ignition, pump running, frost protection and thermostat demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBTP18S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060797570166\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric System Boiler (heating only)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e18 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e27 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 4mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCable Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eHigh-temperature flexible multi-strand cable (e.g. HO7) recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male (flexi-hoses recommended over irons)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eApprox. 20kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible Hot Water\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVented or unvented indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar panel diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler provide hot water as well as heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBTP18S is a \u003cstrong\u003esystem boiler for central heating only\u003c\/strong\u003e. Hot water must be provided by connecting a vented or unvented indirect hot water cylinder to the boiler's heating circuit.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a flue for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. As an all-electric boiler, the SBTP18S produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and requires no flue, chimney or external venting of any kind.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size breaker and cable does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom's specification calls for a \u003cstrong\u003e27A rated current\u003c\/strong\u003e, a minimum \u003cstrong\u003e32A breaker\u003c\/strong\u003e and a minimum \u003cstrong\u003e3 x 4mm² cable\u003c\/strong\u003e. An electrician should always confirm the correct breaker and cable size on site, since supply voltage can vary property to property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this boiler suitable for a mid-size or large home?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe 18kW output sits at the entry point of Strom's three-phase system boiler range, suiting properties with a heating demand between the single-phase 14.4kW model and the larger 21kW and 24kW three-phase options. A proper heat loss calculation should confirm the correct size for any given property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs professional installation required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes. Installation must be carried out by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e in line with BS 7671 wiring regulations, with an electrical installation certificate and Part P certificate provided as a condition of both building regulations compliance and the manufacturer's warranty.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat warranty does this boiler come with?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom boilers are supplied with an out-of-box warranty that can be extended by completing product registration within 45 days of purchase; warranty duration can vary by model, supplier or promotional package, so the registration documentation supplied with the unit should be checked for exact terms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954626634077,"sku":"SBTP18S","price":1270.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_b30d133a-aad9-4639-b733-3f065a976af1.png?v=1751974183"},{"product_id":"strom-21kw-electric-system-boiler-three-phase","title":"Strom 21kW Electric System Boiler Three Phase 400V - SBTP21S No Flue Serpentine Heat Exchanger for Large Homes","description":"\u003c!-- SEO Product Name: Strom 21kW Electric System Boiler Three Phase 400V - SBTP21S No Flue Serpentine Heat Exchanger for Large Homes --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 21kW Electric System Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP21S\u003c\/strong\u003e) sits at the top end of Strom's mid-range output, built for large homes and commercial buildings with high-demand heating needs. It runs central heating only, paired with a vented or unvented indirect hot water cylinder, and uses Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e to spread heat evenly across the whole element surface rather than concentrating it at a single hotspot-prone heating rod.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eFeaturing an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a full-colour touchscreen control panel, and \u003cstrong\u003ezero on-site carbon monoxide emissions\u003c\/strong\u003e, the SBTP21S needs no flue and is a future-proof choice for electric central heating. At \u003cstrong\u003e99%+ efficiency\u003c\/strong\u003e with self-modulating output down to as little as 1kW, it is designed to run near-silently and cost-effectively on Economy 10 and similar time-of-use electricity tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e21 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e32 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e registered with a competent persons scheme, in accordance with \u003cstrong\u003eBS 7671 (IEE Wiring Regulations)\u003c\/strong\u003e. An electrical installation certificate and a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for any new boiler circuit, and this documentation is also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Is Essential\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eStrom advise that a proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e is carried out before purchase. Electric boilers are 100% efficient at the point of use, so a straight like-for-like swap with an older gas or oil boiler will typically \u003cstrong\u003eoversize\u003c\/strong\u003e the unit. Part L 2022 of the Building Regulations requires that boilers are not significantly oversized for the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eSystem Boiler, Not Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003eheating-only system boiler\u003c\/strong\u003e: hot water is provided separately via a vented or unvented indirect hot water cylinder connected to the boiler's heating circuit, not by the boiler itself. If instant combination hot water and heating from one unit is needed, the equivalent Strom Combi Boiler range should be considered instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat is transferred evenly across the \u003cstrong\u003ewhole surface area\u003c\/strong\u003e of the element rather than at isolated hot points, speeding up heat-up time and reducing limescale build-up that would otherwise reduce performance over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMultiple Independent Heating Strands\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWhere many competing boilers rely on a single heating strand for all their output, Strom's element uses \u003cstrong\u003emultiple strands\u003c\/strong\u003e, each independently controlled, spreading electrical stress and enabling \u003cstrong\u003eself-modulation down to as little as 1kW\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eWater-Isolated Heating Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe heating strands are kept \u003cstrong\u003ephysically separate from the system water\u003c\/strong\u003e, sharply reducing the corrosion that shortens the life of conventional immersion-style heating elements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSingle-Unit Replaceable Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUnlike competitor designs that bury an element inside a small internal tank, Strom's heat exchanger is a \u003cstrong\u003esingle replaceable unit\u003c\/strong\u003e, simplifying any future servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculation pump and expansion vessel are built into the boiler casing\u003c\/strong\u003e, reducing the number of separate components an installer needs to source, fit and commission.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen Control With LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA full \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e displays live flow temperature, clock, and system status, with clear icons for ignition, pump running, frost protection and thermostat demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBTP21S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060797570173\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric System Boiler (heating only)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e21 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCable Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eHigh-temperature flexible multi-strand cable (e.g. HO7) recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male (flexi-hoses recommended over irons)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eApprox. 20kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible Hot Water\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVented or unvented indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar panel diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler provide hot water as well as heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBTP21S is a \u003cstrong\u003esystem boiler for central heating only\u003c\/strong\u003e. Hot water must be provided by connecting a vented or unvented indirect hot water cylinder to the boiler's heating circuit.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a flue for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. As an all-electric boiler, the SBTP21S produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and requires no flue, chimney or external venting of any kind.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size breaker and cable does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom's specification calls for a \u003cstrong\u003e32A rated current\u003c\/strong\u003e, a minimum \u003cstrong\u003e40A breaker\u003c\/strong\u003e and a minimum \u003cstrong\u003e3 x 6mm² cable\u003c\/strong\u003e. An electrician should always confirm the correct breaker and cable size on site, since supply voltage can vary property to property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow does this compare to the 24kW model?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe SBTP21S sits just below the range-topping 24kW SBTP24S. Choosing between them comes down to the property's calculated heat loss; Strom recommend against oversizing, so the smaller of two suitable outputs is normally the better choice.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs professional installation required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes. Installation must be carried out by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e in line with BS 7671 wiring regulations, with an electrical installation certificate and Part P certificate provided as a condition of both building regulations compliance and the manufacturer's warranty.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat warranty does this boiler come with?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom boilers are supplied with an out-of-box warranty that can be extended by completing product registration within 45 days of purchase; warranty duration can vary by model, supplier or promotional package, so the registration documentation supplied with the unit should be checked for exact terms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954652324189,"sku":"SBTP21S","price":1370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_c46192ba-299f-4997-a7e8-2b1ecbe0341e.png?v=1751974101"},{"product_id":"strom-24kw-electric-system-boiler-three-phase","title":"Strom 24kW Electric System Boiler Three Phase 400V - SBTP24S\/WBTP24S No Flue Serpentine Element Heat Exchanger","description":"\u003c!-- SEO Product Name: Strom 24kW Electric System Boiler Three Phase 400V - SBTP24S\/WBTP24S No Flue Serpentine Element Heat Exchanger --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 24kW Electric System Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP24S\u003c\/strong\u003e) is the largest output in Strom's system boiler range, designed for large homes and commercial premises with substantial heating demand. It runs central heating only, paired with a vented or unvented indirect hot water cylinder, and uses Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e to spread heat evenly across the whole element surface rather than relying on a single hotspot-prone heating rod.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eBuilt with an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a full-colour touchscreen control panel, and \u003cstrong\u003ezero on-site emissions\u003c\/strong\u003e, this boiler needs no flue and produces no carbon monoxide, making it well suited to properties off the gas grid, flats, and plant rooms where flueing simply isn't possible. At \u003cstrong\u003e99%+ efficiency\u003c\/strong\u003e and with self-modulating output down to as little as 1kW, it is engineered to run quietly and cost-effectively on Economy 10 and similar time-of-use electricity tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e24 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e36 A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FDECEC; border-left: 4px solid #D32F2F; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #d32f2f; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eQualified Electrician Required\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e registered with a competent persons scheme, in accordance with \u003cstrong\u003eBS 7671 (IEE Wiring Regulations)\u003c\/strong\u003e. An electrical installation certificate and a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for any new boiler circuit, and this documentation is also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #e0942a; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eCorrect Sizing Is Essential\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eStrom advise that a proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e is carried out before purchase. Electric boilers are 100% efficient at the point of use, so a straight like-for-like swap with an older gas or oil boiler will typically \u003cstrong\u003eoversize\u003c\/strong\u003e the unit. Part L 2022 of the Building Regulations requires that boilers are not significantly oversized for the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #008377cf; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eSystem Boiler, Not Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis is a \u003cstrong\u003eheating-only system boiler\u003c\/strong\u003e: hot water is provided separately via a vented or unvented indirect hot water cylinder connected to the boiler's heating circuit, not by the boiler itself. If instant combination hot water and heating from one unit is needed, the equivalent Strom Combi Boiler range should be considered instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eHeat is transferred evenly across the \u003cstrong\u003ewhole surface area\u003c\/strong\u003e of the element rather than at isolated hot points, speeding up heat-up time and reducing limescale build-up that would otherwise reduce performance over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eMultiple Independent Heating Strands\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eWhere many competing boilers rely on a single heating strand for all their output, Strom's element uses \u003cstrong\u003emultiple strands\u003c\/strong\u003e, each independently controlled, spreading electrical stress and enabling \u003cstrong\u003eself-modulation down to as little as 1kW\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eWater-Isolated Heating Element\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eThe heating strands are kept \u003cstrong\u003ephysically separate from the system water\u003c\/strong\u003e, sharply reducing the corrosion that shortens the life of conventional immersion-style heating elements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eSingle-Unit Replaceable Element\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eUnlike competitor designs that bury an element inside a small internal tank, Strom's heat exchanger is a \u003cstrong\u003esingle replaceable unit\u003c\/strong\u003e, simplifying any future servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA \u003cstrong\u003ecirculation pump and expansion vessel are built into the boiler casing\u003c\/strong\u003e, reducing the number of separate components an installer needs to source, fit and commission.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eTouchscreen Control With LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA full \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e displays live flow temperature, clock, and system status, with clear icons for ignition, pump running, frost protection and thermostat demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eSBTP24S \/ WBTP24S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e5060438332062\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eElectric System Boiler (heating only)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e24 kW (81,900 BTU)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e36 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3 x 6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCable Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eHigh-temperature flexible multi-strand cable (e.g. HO7) recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eHeating Circuit\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMin. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e20°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3\/4\" Male (flexi-hoses recommended over irons)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eApprox. 20kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCompatible Hot Water\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eVented or unvented indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eSolar panel diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler provide hot water as well as heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eNo. The SBTP24S is a \u003cstrong\u003esystem boiler for central heating only\u003c\/strong\u003e. Hot water must be provided by connecting a vented or unvented indirect hot water cylinder to the boiler's heating circuit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDo I need a flue for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eNo. As an all-electric boiler, the SBTP24S produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and requires no flue, chimney or external venting of any kind.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat size breaker and cable does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eStrom's specification calls for a \u003cstrong\u003e36A rated current\u003c\/strong\u003e, a minimum \u003cstrong\u003e40A breaker\u003c\/strong\u003e and a minimum \u003cstrong\u003e3 x 6mm² cable\u003c\/strong\u003e. An electrician should always confirm the correct breaker and cable size on site, since supply voltage can vary property to property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eCan this boiler be paired with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eYes, the boiler is \u003cstrong\u003ecompatible with solar panel systems\u003c\/strong\u003e and can be integrated into a wider renewable energy setup, alongside compatibility with underfloor heating and Economy 10-style tariffs.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eIs professional installation required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eYes. Installation must be carried out by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e in line with BS 7671 wiring regulations, with an electrical installation certificate and Part P certificate provided as a condition of both building regulations compliance and the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat warranty does this boiler come with?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eStrom boilers are supplied with an out-of-box warranty that can be extended by completing product registration within 45 days of purchase; warranty duration can vary by model, supplier or promotional package, so the registration documentation supplied with the unit should be checked for exact terms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954664710493,"sku":"SBTP24S","price":1430.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_25a78325-8c0e-4c3f-88f0-a56b5d6169ee.png?v=1751974048"},{"product_id":"strom-6kw-single-phase-heat-only-e-boiler","title":"Strom 6kW Single Phase Electric Heat Only Boiler - SBSP6H No Flue Compact Wall-Mounted Central Heating","description":"\u003c!-- SEO Product Name: Strom 6kW Single Phase Electric Heat Only Boiler - SBSP6H No Flue Compact Wall-Mounted Central Heating --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 6kW Single Phase Heat Only E-Boiler\u003c\/strong\u003e (model \u003cstrong\u003eSBSP6H\u003c\/strong\u003e) is a compact, entry-level electric boiler built for \u003cstrong\u003ecentral heating only\u003c\/strong\u003e, ideal for small homes, flats, extensions or annexes where a full-size system boiler isn't needed. It runs on a standard single-phase 230V domestic supply, needs no flue of any kind, and pairs with an indirect hot water cylinder if hot water is also required from the property.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eAt only \u003cstrong\u003e520 x 235 x 120mm\u003c\/strong\u003e, the SBSP6H is one of the smallest units in the Strom range, making it well suited to tight plant rooms, cupboards and utility spaces. With \u003cstrong\u003eminimal moving parts\u003c\/strong\u003e for near-silent, low-maintenance operation, an \u003cstrong\u003eLED digital display\u003c\/strong\u003e for simple control, and zero emissions at the point of use, it's a straightforward electric alternative for properties off the gas grid or where flueing a conventional boiler isn't practical.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e26 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e520x235x120mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eCompact Dimensions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eD\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eErP Rating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e2 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e registered with a competent persons scheme, in accordance with \u003cstrong\u003eBS 7671 (IEE Wiring Regulations)\u003c\/strong\u003e. An electrical installation certificate and a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for any new boiler circuit, and this documentation is also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eHeat Only, Not Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003eheating-only boiler\u003c\/strong\u003e: hot water must be provided separately, typically via an indirect hot water cylinder connected to the boiler's heating circuit. If instant combination hot water and heating from a single unit is needed, the Strom Combi Boiler range should be considered instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Matters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eA proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e should be carried out before purchase to confirm this 6kW output suits the property. As one of the smallest units in the range, it is best matched to small homes, flats, annexes or well-insulated new-build spaces with modest heating demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eUltra-Compact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAt just \u003cstrong\u003e520 x 235 x 120mm\u003c\/strong\u003e, the SBSP6H is small enough to fit into tight cupboards, utility rooms and plant spaces where a full-size boiler wouldn't.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMinimal Moving Parts\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith very few mechanical components, the boiler runs \u003cstrong\u003enear-silently\u003c\/strong\u003e and needs little in the way of ongoing maintenance compared with fossil-fuel alternatives.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eNo Flue Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAs a fully electric boiler, the SBSP6H produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and needs no flue, chimney or external venting of any kind.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLED Digital Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA clear \u003cstrong\u003eLED display and simple control interface\u003c\/strong\u003e makes day-to-day operation straightforward for the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSolar \u0026amp; Underfloor Heating Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar panel systems and underfloor heating\u003c\/strong\u003e, giving flexibility for renewable integration or low-temperature heating circuits.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSpace-Saving Plant Room Solution\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eIts small footprint and \u003cstrong\u003ewall-mounted fitting\u003c\/strong\u003e make it a practical choice for extensions, annexes, and other spaces where every centimetre of plant room counts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBSP6H\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060438333540\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric Heat Only Boiler (heating only)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e230V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e26 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20–80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Pressure Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5–1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm Compression\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e520 x 235 x 120mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible Hot Water\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIndirect hot water cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar panel systems, underfloor heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler provide hot water as well as heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBSP6H is a \u003cstrong\u003eheat only boiler for central heating\u003c\/strong\u003e. Hot water must be provided separately, typically by connecting an indirect hot water cylinder to the boiler's heating circuit.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a flue for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. As an all-electric boiler, the SBSP6H produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and requires no flue, chimney or external venting of any kind.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size property is this boiler suitable for?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eAt 6kW, this is one of the \u003cstrong\u003esmallest outputs in the Strom range\u003c\/strong\u003e, suiting small homes, flats, annexes or well-insulated new-build spaces. A heat loss calculation should confirm suitability for any specific property before purchase.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size breaker and cable does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom's specification calls for a \u003cstrong\u003e26A rated current\u003c\/strong\u003e, a minimum \u003cstrong\u003e32A breaker\u003c\/strong\u003e and a minimum \u003cstrong\u003e2.5mm² cable\u003c\/strong\u003e. An electrician should always confirm the correct breaker and cable size on site, since supply voltage can vary property to property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this boiler be paired with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, the boiler is \u003cstrong\u003ecompatible with solar panel systems\u003c\/strong\u003e, and can also be paired with underfloor heating circuits alongside standard radiator systems.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs professional installation required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes. Installation must be carried out by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e in line with BS 7671 wiring regulations, with an electrical installation certificate and Part P certificate provided as a condition of both building regulations compliance and the manufacturer's warranty.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975604183389,"sku":"SBSP6H","price":497.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler_bc34beb7-2f81-4641-a1ff-12bf3af79a7d.png?v=1751979167"},{"product_id":"strom-9kw-single-phase-heat-only-e-boiler","title":"Strom 9kW Single Phase Heat Only Electric Boiler","description":"\u003cdiv style=\"font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-size: 16px; color: #1a1a1a; max-width: 900px; margin: 0 auto; line-height: 1.65;\"\u003e\n\u003c!-- INTRO --\u003e\n\u003cp style=\"font-size: 17px; margin: 0 0 22px;\"\u003eThe \u003cstrong\u003eStrom 9kW Single Phase Heat Only Electric Boiler\u003c\/strong\u003e delivers reliable central heating without the bulk — a compact, wall-mounted unit purpose-built for properties where \u003cstrong\u003espace is at a premium\u003c\/strong\u003e or where built-in pumps and expansion vessels simply aren't needed. With \u003cstrong\u003ezero carbon monoxide emissions\u003c\/strong\u003e, near-silent operation and a \u003cstrong\u003epatented serpentine heat exchanger\u003c\/strong\u003e, this is the clean, quiet alternative to gas that fits almost anywhere in your home.\u003c\/p\u003e\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 28px;\"\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e100%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eEfficient\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e41A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eDraw @ 230VAC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e2 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eWarranty (registered)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e520mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eHeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CALLOUT: Installer requirement --\u003e\n\u003cdiv style=\"background: #fff3cd; border-left: 4px solid #f59e0b; border-radius: 6px; padding: 14px 18px; margin: 0 0 22px;\"\u003e\n\u003cstrong style=\"color: #92400e;\"\u003e⚠ Professional Installation Required\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 15px; color: #78350f;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e who is a member of a competent persons scheme. A \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e and notification under Building Regulations are legally required. The heating circuits must also be designed and commissioned by a competent plumber or heating engineer.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- CALLOUT: What you also need --\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 18px; margin: 0 0 28px;\"\u003e\n\u003cstrong style=\"color: #005c54;\"\u003eℹ Heat Only Boiler — External Components Needed\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 15px;\"\u003eUnlike a system boiler, the Heat Only variant has no built-in pump, expansion vessel or pressure relief valve. You will need to supply and fit: \u003cstrong\u003ecirculating pump, expansion vessel \u0026amp; kit, pressure gauge, automatic bypass valve, isolation valves,\u003c\/strong\u003e and \u003cstrong\u003eexternal heating controls\u003c\/strong\u003e (programmer + room thermostat or programmable thermostat).\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION: FEATURES --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 18px; border-radius: 6px 6px 0 0; font-size: 15px; font-weight: bold; letter-spacing: .5px; margin-bottom: 0;\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; padding: 16px 0 28px;\"\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e♻ Patented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eStrom's unique heat exchanger distributes heat \u003cstrong\u003eevenly across the entire element surface\u003c\/strong\u003e, eliminating hot spots that cause limescale and corrosion. The result is a longer-lasting element and consistently efficient heat transfer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e🔅 Near-Silent, Zero-Emission Operation\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eWith \u003cstrong\u003eno combustion, no flue and no carbon monoxide\u003c\/strong\u003e, this boiler can be installed in virtually any room. Minimal moving parts mean whisper-quiet performance day and night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e🔍 Compact Form Factor\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAt just \u003cstrong\u003e520 × 235 × 120 mm\u003c\/strong\u003e, the unit is considerably smaller than a conventional boiler. Wall-mounted via an integrated bracket with supplied expanding bolts, it fits neatly in cupboards, utility rooms or airing cupboards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e⚡ 100% Electrical Efficiency\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eEvery kilowatt drawn from the supply converts directly to heat — \u003cstrong\u003eno flue losses, no standby pilot flame\u003c\/strong\u003e. Pair with a green electricity tariff or your own solar panels to reduce running costs further.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e☀ Frost Protection Built-In\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAn onboard frost-protection mode activates automatically to \u003cstrong\u003esafeguard the boiler and pipework\u003c\/strong\u003e in unheated spaces. For external outbuildings, Strom recommends adding an external frost stat wired inline.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e🔌 Modular \u0026amp; Serviceable Design\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003efully modular component layout\u003c\/strong\u003e means individual parts can be replaced without swapping the whole unit, keeping long-term maintenance costs low. The heating element is a single replaceable assembly — straightforward for any qualified engineer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e☹ External Thermostat Compatible\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eA dedicated switch-live thermostat terminal on the PCB accepts \u003cstrong\u003eany standard room thermostat or programmable thermostat\u003c\/strong\u003e, giving you full flexibility over how your heating schedule is managed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e☉ Solar-Ready \u0026amp; Off-Grid Ideal\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eCompatible with \u003cstrong\u003esolar PV divert systems\u003c\/strong\u003e (e.g. via an immersion controller), making this boiler an excellent companion to on-site generation. It's also the go-to choice for \u003cstrong\u003eproperties not connected to the gas network\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION: SPECIFICATIONS --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 18px; border-radius: 6px 6px 0 0; font-size: 15px; font-weight: bold; letter-spacing: .5px; margin-bottom: 0;\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; width: 45%; border-bottom: 1px solid #c8e6e3;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003ePhase\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eSingle Phase (230 VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eCurrent Draw @ 230 VAC\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e41 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMinimum MCB \/ RCB Breaker\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e45 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e6 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e20 °C – 80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e0.5 – 1.5 Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eHeating Flow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e¾\" Male BSP (flexi hoses or push-fit irons recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003ePRV Connection Size\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e15 mm Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e2 years when registered within 45 days of purchase (1 year if unregistered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eCompliance\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS7671 (IEE 19th Ed), BS EN 7593, Part L 2022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600;\"\u003eWhat's in the Box\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px;\"\u003eHeat Only Boiler, integrated wall mounting bracket, 3× expanding wall bolts, wall mounting guide, installation manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- SECTION: FAQ --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 18px; border-radius: 6px 6px 0 0; font-size: 15px; font-weight: bold; letter-spacing: .5px; margin-bottom: 0;\"\u003eFREQUENTLY ASKED QUESTIONS\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #c8e6e3; border-top: none; border-radius: 0 0 8px 8px; margin-bottom: 28px; overflow: hidden;\"\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat is a Heat Only boiler and how does it differ from a System boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eA \u003cstrong\u003eHeat Only boiler\u003c\/strong\u003e (also called an Open Vent or Regular boiler) provides only the heat source — it has no built-in circulating pump, expansion vessel, pressure gauge or pressure relief valve. Those components are fitted externally by your installer. This makes the unit physically smaller and is ideal for \u003cstrong\u003esituations where you already have a pump and vessel arrangement\u003c\/strong\u003e, or where you need more flexibility in system design. A System boiler packages those components internally for a more self-contained installation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat electrical supply and cable size do I need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eThe 9kW model draws \u003cstrong\u003e41 A at 230 VAC\u003c\/strong\u003e. Your installer must provide a \u003cstrong\u003eminimum 45 A MCB\/RCB breaker\u003c\/strong\u003e and a \u003cstrong\u003eminimum 6 mm² cable\u003c\/strong\u003e — though the actual cable specification should always be calculated against the specific installation conditions (cable length, route, ambient temperature). A linked isolator switch with a minimum 3 mm contact gap in every pole is also required. Because this is a new circuit, a \u003cstrong\u003ePart P electrical installation certificate\u003c\/strong\u003e is legally required on completion.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eDoes this boiler work with solar panels?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eYes. The Strom Heat Only Boiler is \u003cstrong\u003ecompatible with solar PV divert systems\u003c\/strong\u003e. When paired with a solar immersion\/divert controller, surplus generation from your panels can be directed to heat your home, reducing your electricity bill. It is also well suited to \u003cstrong\u003eEconomy 7 \/ Economy 10 tariffs\u003c\/strong\u003e for lower overnight running costs.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhich thermostat or controls do I need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eThe boiler has \u003cstrong\u003eno onboard programmer\u003c\/strong\u003e — external time and temperature controls are required by Building Regulations (Part L). You can use a \u003cstrong\u003eseparate programmer and room thermostat\u003c\/strong\u003e, or an all-in-one \u003cstrong\u003eprogrammable room thermostat\u003c\/strong\u003e. The boiler's PCB accepts a standard switch-live signal, making it compatible with most third-party controls including smart thermostats. Strom also manufactures its own range of programmers and thermostats.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eHow do I register the warranty?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eRegister online at \u003cstrong\u003ewww.stromltd.com\/guarantee\u003c\/strong\u003e within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e using the details on the registration card supplied with the boiler. Registration extends the warranty to \u003cstrong\u003e2 years\u003c\/strong\u003e (parts and labour in year 1, parts only in year 2). Only the legal owner of the building can register. Failing to register within the 45-day window reduces cover to \u003cstrong\u003e1 year\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eCan I install this boiler in a bathroom, cupboard or garage?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eThe boiler can be \u003cstrong\u003esited almost anywhere\u003c\/strong\u003e provided the wall surface is non-combustible and rated above 100 °C, there is at least \u003cstrong\u003e100 mm clearance\u003c\/strong\u003e on all sides, and the location is not accessible to unauthorised persons. Where there is risk of access by children or unqualified individuals, it must be installed in a \u003cstrong\u003elockable enclosure\u003c\/strong\u003e. In areas prone to frost, ensure that an external frost stat is wired inline to supplement the built-in frost-protection mode.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975610245469,"sku":"SBSP9H","price":570.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler_5c1e53a3-deef-4405-8576-75566fb8a832.png?v=1751979087"},{"product_id":"strom-11kw-single-phase-heat-only-e-boiler","title":"Strom 11kW Single Phase Heat Only Electric Boiler — SBSP11H — Wall-Mounted No Flue No Gas","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eStrom 11kW Single Phase Heat Only Electric Boiler (SBSP11H)\u003c\/strong\u003e is a \u003cstrong\u003ecompact, wall-mounted electric boiler\u003c\/strong\u003e designed to provide central heating via an existing radiator circuit — with \u003cstrong\u003eno flue, no gas connection, and no risk of carbon monoxide\u003c\/strong\u003e. It is the most stripped-back form of electric boiler: no integrated pump, no integral expansion vessel, no hot water function — just the essential heating element and controls in a unit measuring \u003cstrong\u003ejust 520 × 235 × 120 mm\u003c\/strong\u003e. This makes it ideal for installations where space is at a premium, where an existing pump and expansion vessel are already in place, or where a system boiler format is not required. The Strom self-modulating heat exchanger supports \u003cstrong\u003eoutput from as low as 1 kW\u003c\/strong\u003e, reducing energy consumption during lower demand periods, and the multi-strand element design eliminates hot spots to minimise limescale build-up and extend service life.\n  \u003c\/p\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e11 kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eHeating output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003efrom 1 kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eModulation range\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e520×235mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eUltra-compact (120mm deep)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e~100%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficiency\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003eNo flue\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eNo gas — install anywhere\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Installer Requirements\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e. Requires a dedicated \u003cstrong\u003e230V single-phase circuit with a minimum 50A breaker and ≥10mm² cable\u003c\/strong\u003e (48A full load). Warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e at stromltd.com. A Part P certificate is required; annual service is recommended but the boiler has no gas-related service obligation.\n  \u003c\/div\u003e\n\n  \u003c!-- ── AMBER HEAT-ONLY CALLOUT ────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ Heat Only — What's Not Included\u003c\/strong\u003e\u003cbr\u003e\n    As a \u003cstrong\u003eheat-only boiler\u003c\/strong\u003e, the SBSP11H provides central heating only — it has \u003cstrong\u003eno domestic hot water function, no integrated circulating pump, and no integral expansion vessel\u003c\/strong\u003e. These must be supplied separately or already exist in the installation. This is the correct boiler type when replacing a heat-only gas boiler in an existing sealed or open-vented system, or where the pump and vessel are located remotely. If you require integrated pump, vessel, and optional DHW, see the \u003cstrong\u003eStrom System Boiler\u003c\/strong\u003e or \u003cstrong\u003eStrom Combi Boiler\u003c\/strong\u003e range instead.\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Features \u0026amp; Benefits\n  \u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — Install Almost Anywhere\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith no combustion and no exhaust gases, the SBSP11H requires \u003cstrong\u003eno flue penetration through an external wall or roof\u003c\/strong\u003e. It can be installed in any room or cupboard with sufficient wall space and electrical supply — including kitchens, utility rooms, airing cupboards, garages, and roof spaces. There is no planning constraint on flue positioning, no condensate drain, and no annual Gas Safe inspection requirement.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Ultra-Compact — 120mm Deep\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAt \u003cstrong\u003e520 × 235 × 120mm\u003c\/strong\u003e, the SBSP11H is one of the slimmest electric boilers available. The shallow 120mm depth means it fits on walls and in spaces where a conventional boiler would not — it protrudes less from the wall than most combination boilers by a substantial margin, and can be installed inside a slim airing cupboard or recessed into partition boarding.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Self-Modulating — Down to 1 kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Strom heat exchanger uses \u003cstrong\u003emultiple independently controlled heating strands\u003c\/strong\u003e rather than a single element. This allows the boiler to modulate its output from \u003cstrong\u003eas low as 1 kW up to its full 11 kW\u003c\/strong\u003e, matching heat generation precisely to demand. During mild weather or low-load periods, running at 2–3 kW instead of full power significantly reduces energy consumption — an advantage over electric boilers that only switch fully on or off.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Strom Heat Exchanger — Less Limescale\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eHeat is transferred \u003cstrong\u003eacross the whole surface area\u003c\/strong\u003e of the element with water kept separate from the heating strands. This eliminates the hot spots that cause localised limescale formation in conventional immersion-style elements — the primary cause of performance degradation and early element failure in hard water areas. The water-separation design also reduces corrosion of the heating strands, extending service life.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Near Silent — Minimal Moving Parts\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWithout a burner, fan, or combustion process, the SBSP11H operates in near silence. The only moving part in the boiler itself is a basic flow switch or similar; there is no pump or diverter valve within the unit. This makes it suitable for installation in bedrooms, home offices, and living areas adjacent to the boiler location without any noise nuisance.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Zero CO Risk — No Gas Safety Obligation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThere is \u003cstrong\u003eno combustion\u003c\/strong\u003e, so the SBSP11H produces no carbon monoxide and no combustion byproducts of any kind. No CO detector is required by the boiler installation regulations (though always prudent in a property), and there is no Gas Safe registration requirement for the boiler itself. Landlords and building managers benefit from the elimination of one annual safety obligation.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Compatible with Solar PV \u0026amp; Off-Peak Tariffs\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAn electric boiler is the most straightforward heating appliance to integrate with \u003cstrong\u003esolar PV self-consumption and time-of-use electricity tariffs\u003c\/strong\u003e (Octopus Go, Economy 7, Agile). The SBSP11H can be controlled by any standard wired room thermostat or programmer — scheduling heating to run during cheap-rate or self-generated electricity hours is straightforward via the external controls.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Drop-In Replacement for Heat-Only Gas Boiler\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe SBSP11H uses \u003cstrong\u003e¾\" male BSP heating connections\u003c\/strong\u003e — the same connection size as most conventional gas boilers. It can replace a heat-only gas boiler in an existing system with minimal pipework modification, using the existing radiators, pump, and expansion vessel. No system redesign is required in the majority of cases — the main work is the electrical supply upgrade and connection.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Technical Specifications\n  \u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:42%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStrom Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eModel \/ Part No.\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eSBSP11H\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHeat only (no pump, no expansion vessel, no DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e11 kW\u003c\/strong\u003e (modulates down to 1 kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePhase\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase — 230V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFull Load Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e48 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e50 A MCB\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" Male BSP (flow and return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15mm Compression (½\" Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~100% (resistive electric — all input converted to heat)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eErP Heating Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (standard rating for electric boilers under EU\/UK ERP scheme)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e520 × 235 × 120 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegrated Pump\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo — external pump required\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegrated Expansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo — external expansion vessel required\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDomestic Hot Water\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo — heating circuit only\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003eUp to 5 years — \u003cstrong\u003emust register within 45 days\u003c\/strong\u003e at stromltd.com; defaults to 1 year without registration\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Frequently Asked Questions\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat is a heat-only boiler and when is it the right choice?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eA heat-only boiler (also called a regular or heat-only boiler) provides \u003cstrong\u003eheating output only\u003c\/strong\u003e — it heats the water that circulates through the radiators, but does not heat domestic hot water and does not include a built-in pump or expansion vessel. It is the right choice when: (1) you are replacing an existing heat-only boiler and the pump and expansion vessel are already in situ; (2) space is extremely tight and the smallest possible boiler footprint is required; or (3) the pump needs to be located separately for noise or installation reasons. If you need integrated hot water and you do not have a separate hot water cylinder, a combi or system boiler is more appropriate.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat pump and expansion vessel do I need alongside this boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eAny standard central heating circulating pump compatible with your pipework size and system head loss can be used — typically a Grundfos UPS or similar 15–60 unit for a domestic radiator system. The expansion vessel must be sized for the system volume: for most domestic sealed systems up to 10–12 radiators, an 8–12 litre vessel at the correct pre-charge pressure is typical. Your installer will size both components to your specific system. If you are replacing an existing pump and vessel, they can often be reused provided they are in good condition and correctly rated for the existing system.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat electrical supply upgrade is typically required?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eAt 48A full load on a single phase 230V supply, the SBSP11H requires a \u003cstrong\u003ededicated circuit from the consumer unit\u003c\/strong\u003e with a minimum 50A MCB and minimum 10mm² cable. Many UK domestic properties currently served by gas boilers have a 100A single-phase supply available — but the incoming capacity and available consumer unit space must be confirmed before ordering. Your installing electrician will assess the incoming supply rating and consumer unit before proceeding. Properties with a 60A or 80A supply head may need a supply upgrade from the DNO — this should be investigated early in the project.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eHow does the 11kW single-phase compare to the 14.4kW single-phase model?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe 14.4kW model (SBSP15H) delivers more heating output and is suited to larger or less well-insulated properties, but draws 62A at full load — requiring a 63A MCB and 10mm² cable, and placing a higher demand on the incoming single-phase supply. The \u003cstrong\u003e11kW model at 48A\u003c\/strong\u003e is more manageable within typical UK domestic supply constraints. As a guide, 11kW of heating is typically appropriate for a well-insulated 3–4 bedroom property or a smaller property with higher heat loss. If in doubt, a heat loss calculation (BS EN 12831) performed by your installer will confirm the correct output for your property.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975623713117,"sku":"SBSP11H","price":595.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler_515bca4a-3aa4-4ec5-99d6-bf672b846722.png?v=1751979054"},{"product_id":"strom-14-4kw-single-phase-heat-only-e-boiler","title":"Strom 14.4kW Single Phase Heat Only Electric Boiler SBSP15H 230V 62A","description":"\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: transparent; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 14.4 kW Single Phase Heat Only Electric Boiler\u003c\/strong\u003e (SBSP15H) is the \u003cstrong\u003ehighest-output model in the Strom single-phase heat-only range\u003c\/strong\u003e, designed to serve larger homes or properties where a separate indirect hot water cylinder already handles domestic hot water. At just \u003cstrong\u003e520 × 235 × 120 mm\u003c\/strong\u003e and drawing \u003cstrong\u003e62 A from a standard 230 V single-phase supply\u003c\/strong\u003e, it delivers \u003cstrong\u003e14.4 kW of continuous central heating output\u003c\/strong\u003e from a unit smaller than most gas boilers. The heat-only format means there is \u003cstrong\u003eno integrated pump or expansion vessel\u003c\/strong\u003e — these are fitted externally, giving the installer complete control over component selection and positioning. \u003cstrong\u003eNo flue is required\u003c\/strong\u003e, zero CO or CO₂ emissions at point of use, and with almost no moving parts the boiler runs near-silently throughout its service life. Compatible with \u003cstrong\u003esolar PV diversion, underfloor heating and all standard S-plan and Y-plan central heating systems\u003c\/strong\u003e. LED digital display. \u003cstrong\u003e2-year manufacturer’s warranty with registration within 45 days\u003c\/strong\u003e (1 year without).\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(110px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e14.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eHeat output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e230V 1 ph\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eSingle phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e62A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eCurrent draw\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003eNo flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eZero CO emissions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e20– 80°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eFlow temp range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eWarranty (registered)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fef2f2; border-left: 4px solid #dc2626; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #7f1d1d;\"\u003e\n\u003cstrong\u003e⚠ Professional installation required:\u003c\/strong\u003e This boiler draws \u003cstrong\u003e62 A at 230 V\u003c\/strong\u003e and must be connected to the mains by a \u003cstrong\u003ecompetent electrician certified to BS 7671 (18th Edition)\u003c\/strong\u003e. Plumbing installation must be completed by a \u003cstrong\u003equalified and certified heating engineer\u003c\/strong\u003e. Strom Limited accepts no liability for installations carried out by unqualified persons.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #d97706; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #92400e;\"\u003e\n\u003cstrong\u003eℹ Register within 45 days for the full 2-year warranty:\u003c\/strong\u003e The standard out-of-box warranty is \u003cstrong\u003e1 year\u003c\/strong\u003e. Register at \u003cstrong\u003estromltd.com\/guarantee\u003c\/strong\u003e within 45 days of purchase using the registration card supplied in the box to extend this to \u003cstrong\u003e2 years\u003c\/strong\u003e. Only the legal owner of the building can register and make a warranty claim. Keep your merchant invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #005c54;\"\u003e\n\u003cstrong\u003eℹ External components required — not included:\u003c\/strong\u003e The heat-only boiler does not include a \u003cstrong\u003epump, expansion vessel or filling loop\u003c\/strong\u003e. These must be installed externally by a qualified engineer. An \u003cstrong\u003eexternal bypass valve\u003c\/strong\u003e must also be fitted to allow system circulation when all TRVs are closed. Flexi hoses are strongly recommended on the flow and return connections.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eWhat’s in the Box\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom SBSP15H Boiler Unit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003e14.4 kW wall-mounted heat-only electric boiler. Built-in auto air vent, LED digital display and 15 mm compression PRV connection. Upright installation only.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eWall Fixings and Mounting Guide\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eAll fixings for wall installation. Wall must support the boiler’s weight when filled. Boiler must be mounted vertically — other orientations void the warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eInstallation Manual\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eStrom installation and operating instructions: system design, electrical connection, commissioning and maintenance requirements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eWarranty Registration Card\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eRegister at stromltd.com\/guarantee within 45 days of purchase to activate the 2-year warranty. Keep your invoice as proof of purchase.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eHeat Only vs System Boiler — Which Do You Need?\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #008377; color: #fff;\"\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; font-size: 13px; font-weight: bold;\"\u003e\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; font-size: 13px; font-weight: bold;\"\u003eHeat Only (this boiler)\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; font-size: 13px; font-weight: bold;\"\u003eSystem Boiler\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated pump\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✘ External (installer’s choice)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Built-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated expansion vessel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✘ External (installer’s choice)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Built-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eDomestic hot water\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✘ Indirect cylinder required\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✘ Indirect cylinder required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003ePhysical size\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eSmallest (520 × 235 × 120mm)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eLarger (includes pump and vessel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eBest for\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eExisting systems with external components; tight spaces; maximum flexibility\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eNew installations wanting all-in-one unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eBypass valve required\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Yes (external)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Yes (external)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 13px; color: #666; margin: -12px 0 20px;\"\u003eBoth types require an indirect hot water cylinder for domestic hot water. Choose the heat-only format when an external pump and vessel are already in place, when space is extremely tight, or when the installer needs to specify their own pump grade.\u003c\/p\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eExternal Components Required — Not Included\u003c\/div\u003e\n\u003cp style=\"font-size: 15px; color: #444; margin: 0 0 14px;\"\u003eThe heat-only format contains only the heating element, controls and safety devices. Your heating engineer will need to supply and fit the following:\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eCirculator Pump (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eCirculates heated water around the system. Use a high-efficiency variable-speed pump. Full bore isolation valves only on flow and return — standard ball valves restrict flow and reduce performance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eExpansion Vessel (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eAccommodates thermal expansion of heating water. Size to suit total system volume. Must be pre-charged to match system fill pressure before commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eBypass Valve (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eAllows system water to circulate when all TRVs are fully closed. Prevents the boiler from overheating under low-demand conditions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eFilling Loop (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eFor pressurising the system to 1.0 – 1.5 bar at commissioning. Must be removed after filling per Water Supply (Water Fittings) Regulations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eFull Bore Isolation Valves (strongly recommended)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eFit on flow and return to isolate the boiler for maintenance without draining the whole system. Standard ball valves create flow restrictions; full bore valves do not.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eFlexi Hoses (strongly recommended)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eStrom recommends flexi hoses on the 3\/4\" flow and return connections. Overtightening rigid compression fittings can damage boiler internals — this is explicitly excluded from warranty cover.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003e14.4 kW — Maximum Single-Phase Heat-Only Output\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThis is the \u003cstrong\u003ehighest output available from a 230 V single-phase heat-only electric boiler\u003c\/strong\u003e. A typical UK three-bedroom semi-detached has a design heat load of 6 – 9 kW; larger or poorly insulated properties can reach 12 – 14 kW. At 14.4 kW this boiler covers the full single-phase residential range. Properties needing more than 14.4 kW would require a three-phase supply.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e14.4 kW\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e230V single phase\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e62A \/ min 63A breaker\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSmallest Possible Unit — 520 × 235 × 120 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eStripping out the pump and vessel leaves a unit roughly the size of a large hardback book. The \u003cstrong\u003e120 mm depth\u003c\/strong\u003e is less than many kitchen cupboard shelves. The SBSP15H fits inside a kitchen cabinet, on an airing cupboard wall, in a utility room corner, in a garage, or in any plant room with minimal clear wall space. It must be mounted \u003cstrong\u003eupright on a vertical wall\u003c\/strong\u003e — any other orientation invalidates the warranty.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e520 × 235 × 120mm\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eUpright wall mount only\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Emissions at Point of Use\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eWith no burner, no combustion and no exhaust gas, \u003cstrong\u003eno flue is required and there is zero risk of carbon monoxide\u003c\/strong\u003e. This eliminates the structural and regulatory complexity of gas or oil installation and makes the boiler suitable for any indoor location without ventilation requirements. Ideal for \u003cstrong\u003eoff-gas-grid properties\u003c\/strong\u003e, flats where fluing is impractical, and heritage or listed buildings where external penetrations are restricted.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO risk\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-gas-grid compatible\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eLED Digital Display — External Thermostat Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003eLED digital display\u003c\/strong\u003e shows flow temperature and system status. Temperature is adjustable across the full 20 – 80°C range. An external room thermostat or time clock can be wired in for zone control and scheduling — compatible with standard \u003cstrong\u003eS-plan, Y-plan and wiring centre configurations\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLED display\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExternal thermostat compatible\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar PV Diversion and Underfloor Heating Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eWorks with \u003cstrong\u003esolar PV diversion devices\u003c\/strong\u003e (myenergi Eddi, iBoost, etc.) to use surplus solar generation for space heating instead of exporting at low SEG rates. The 20 – 80°C flow temperature range also makes it compatible with \u003cstrong\u003ewet underfloor heating systems\u003c\/strong\u003e, which typically operate at 35 – 55°C (use manifold mixing valves to maintain correct UFH temperatures).\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV diversion\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eUnderfloor heating\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNear-Silent Operation — Minimal Moving Parts\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eNo burner, no fan, no heat exchanger, no internal pump. The heating element operates in complete silence. The only sound in the system comes from the \u003cstrong\u003eexternal pump\u003c\/strong\u003e, which the installer can position to minimise noise transmission. Minimal moving parts means fewer wear components, lower servicing requirements and high long-term reliability.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo burner or fan\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNear-silent\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLow servicing requirement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eBuilt-in Auto Air Vent and PRV Connection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAn \u003cstrong\u003eautomatic air vent\u003c\/strong\u003e is built into the boiler. If used with an indirect cylinder, an additional auto air vent should be fitted near the cylinder coil. The \u003cstrong\u003e15 mm compression PRV connection\u003c\/strong\u003e accepts the pressure relief valve, which must be piped to a safe discharge point. A system drain point should be fitted at the lowest point of the circuit to allow draining without discharging through the PRV.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBuilt-in auto air vent\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e15mm compression PRV connection\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eAll Standard Heating Configurations Supported\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eCompatible with \u003cstrong\u003eS-plan, Y-plan, fully pumped and gravity-assisted\u003c\/strong\u003e systems. Supplies a heating circuit and can feed an indirect hot water cylinder via a motorised valve or cylinder thermostat. System design to BS EN 12828 \/ 12831. Water treatment to BS EN 7593 with a proprietary inhibitor to protect the heating element and pipework.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eS-plan and Y-plan\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSealed system\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eIndirect cylinder\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eInstallation Quick Reference\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 10px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003e230 V single phase. 62 A draw. Min 63 A circuit breaker. Min 10 mm² cable. Linked isolator with min 3 mm contact gap in every pole. Cable entry at top right panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eElectrical certification\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eConnection by a \u003cstrong\u003ecompetent electrician to BS 7671 (18th Edition)\u003c\/strong\u003e. System must be earthed before any current is applied.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003ePlumbing certification\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eBy a \u003cstrong\u003equalified and certified heating engineer\u003c\/strong\u003e. Design to BS EN 12828, 12831 and 14336. Water treatment to BS EN 7593.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSystem pressure\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eFill to 1.0 – 1.5 bar. Fill slowly, vent all manual release valves to purge air. Remove filling loop after commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003ePipework connections\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003e3\/4\" male (22 mm pipe). Full bore isolation valves on flow and return. Flexi hoses strongly recommended. Do not overtighten rigid fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eMounting and location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eUpright on vertical wall only — other orientations void warranty. Wall must support boiler weight when filled. Allow access for front panel removal. Avoid frost-risk locations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP15H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat output\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e14.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP rating (heating)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow temperature range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20 – 80°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating pressure range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eElectrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230 V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent draw\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e62 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum circuit breaker\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum cable size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eConnections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow and return\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3\/4\" Male (22 mm pipe)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15 mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003ePhysical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eWall-mounted, upright only (warranty void otherwise)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eFeatures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eLED digital display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBuilt-in auto air vent\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated pump\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNo — external pump required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated expansion vessel\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNo — external expansion vessel required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue required\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eEmissions at point of use\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eZero (no combustion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCompatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating systems\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eS-plan, Y-plan, sealed system, fully pumped\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDomestic hot water\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eVia indirect cylinder (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV diversion\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eUnderfloor heating\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eStandards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating design\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eElectrical\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBS 7671 (18th Edition IEE Wiring Regulations)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWater treatment\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBS EN 7593\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eWarranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eStandard warranty\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1 year (without registration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExtended warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (register within 45 days at stromltd.com\/guarantee)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWarranty holder\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eLegal owner of building only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBox Contents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eIncluded\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler unit, wall fixings, mounting guide, installation manual, registration card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eEAN barcode\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5060438333571\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is the difference between a heat-only and a system electric boiler?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003eheat-only boiler\u003c\/strong\u003e contains only the heating element, controls and safety components. There is no pump or expansion vessel. These are installed externally by the engineer, who chooses their specification and positioning. A \u003cstrong\u003esystem boiler\u003c\/strong\u003e includes both components in a larger housing. The heat-only format is the better choice for existing systems that already have an external pump and vessel, for installations where space is extremely tight, or where the engineer wants full control over component selection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat size indirect cylinder does this boiler need?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe cylinder size depends on the property’s daily hot water demand, not the boiler output. General UK guidance: 1 – 2 people = 120 – 150 litres; 3 – 4 people = 150 – 210 litres; 5+ people = 250 – 300 litres. At 14.4 kW the boiler will heat a 150 litre cylinder from cold to 60°C in approximately 30 minutes. Your heating engineer should complete a full heat loss and cylinder sizing calculation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this boiler work with Economy 7 or Economy 10 tariffs?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The SBSP15H can be controlled via external time clocks or a room thermostat, allowing it to be scheduled to run during off-peak tariff periods. On Economy 7 or Economy 10, the boiler can heat the property and charge the hot water cylinder overnight at reduced electricity rates. Pairing with a solar PV array and diversion device can further reduce daytime grid import by directing surplus solar generation to heating.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhy does Strom recommend flexi hoses rather than rigid fittings?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe 3\/4\" male connections on the boiler require tightening to form a watertight seal. The force applied to rigid compression or push-fit fittings can be transmitted to the boiler’s internal connections, potentially damaging the element housing. Flexi hoses absorb this mechanical stress and accommodate minor misalignment. Strom’s installation manual explicitly states that damage from overtightening rigid fittings is \u003cstrong\u003enot covered under warranty\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhy must I use full bore isolation valves rather than standard ball valves?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eStandard ball valves have a reduced bore that creates a flow restriction when open. Immediately adjacent to the boiler, this limits circulation rates and can cause localised overheating of the heating element. Full bore isolation valves have the same internal diameter as the connected pipework and create no restriction, maintaining correct flow and protecting long-term performance.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eIs this boiler suitable for a property off the gas grid?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes — this is one of the SBSP15H’s primary use cases. Properties that cannot access mains gas, where an LPG installation is impractical, or where fluing is restricted (listed buildings, upper-floor flats) are well served by an electric boiler. The running cost per kWh is higher than gas, but this can be offset by pairing with a solar PV system and\/or battery storage, and by taking advantage of Economy 7 or Economy 10 off-peak tariffs to heat the property and charge hot water storage at lower electricity rates.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(210px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom 14.4kW Single Phase System Boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eSame output with integrated pump and expansion vessel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eIndirect Unvented Hot Water Cylinder\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eRequired for domestic hot water with this heat-only boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eGrundfos UPM3 AUTO 25-70 Circulator Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eHigh-efficiency variable-speed pump for the external circuit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi Eddi Solar PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDiverts surplus solar generation to space heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975636590941,"sku":"SBSP15H","price":770.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler.png?v=1751978952"},{"product_id":"thermosphere-electric-system-boiler-with-pum-single-and-three-phase","title":"ThermoSphere Electric System Boiler with Pump | Single and Three Phase 230\/400V","description":"\u003c!-- SEO Product Name: ThermoSphere Electric System Boiler with Pump | Single and Three Phase 230\/400V --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cb\u003eThermoSphere Electric System Boiler\u003c\/b\u003e is a slimline, wall-mounted electric flow boiler with an \u003cb\u003eintegrated circulation pump\u003c\/b\u003e, built for central heating in properties without a mains gas supply. Available in outputs from \u003cb\u003e4.5kW to 24kW\u003c\/b\u003e, it suits everything from small flats to larger commercial spaces, running on either a single-phase (230V) or three-phase (400V) electrical supply.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith \u003cb\u003e3-stage heating elements\u003c\/b\u003e for modulated output and no flue, gas connection or annual servicing requirement, it's a straightforward retrofit for radiator or wet underfloor heating systems, and integrates with indirect unvented cylinders for hot water.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e4.5–24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eOutput Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e230\/400V\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eVoltage\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e65°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eMax Flow Temp\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e2 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eMax System Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e100%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eElectric-to-Heat Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #D32F2F; background:#FDECEC; padding:14px 18px; margin:0 0 20px 0; border-radius:0 6px 6px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#D32F2F; font-size:14px; text-transform:uppercase; letter-spacing:0.04em; margin:0 0 6px 0;\"\u003eElectrical Supply Requirement\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.6; color:#2B2B2B;\"\u003e\n\u003cb\u003eModels up to and including 15kW\u003c\/b\u003e are fitted with a jumper pin, allowing single-phase (230V) connection out of the box; removing the jumper and wiring each live phase separately enables three-phase (400V) operation. \u003cb\u003e18kW models and above are designed for three-phase supply only.\u003c\/b\u003e Always confirm supply capacity with a qualified electrician before specifying.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eNo Flue or Gas Supply Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eRuns on \u003cb\u003e100% electric operation\u003c\/b\u003e with zero on-site emissions, making it a straightforward option for off-grid properties or all-electric new builds without the need for flue routing or gas safety certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eSingle or Three-Phase Flexibility\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eConnects to either a \u003cb\u003e230V single-phase or 400V three-phase\u003c\/b\u003e supply depending on model and site electrical capacity, with a jumper-pin arrangement simplifying single-phase wiring on smaller models.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003e3-Stage Heating Elements\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003e\n\u003cb\u003eMulti-stage element modulation\u003c\/b\u003e improves comfort and electrical load management compared with a simple on\/off single-element design, reducing peak demand spikes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eIntegrated Circulation Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eUnlike the heat-only variant, this \u003cb\u003esystem boiler includes a built-in circulation pump\u003c\/b\u003e, simplifying the installation kit needed for radiator or underfloor heating circuits.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eCompatible With Indirect Cylinders\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003ePairs with \u003cb\u003eindirect unvented hot water cylinders\u003c\/b\u003e for domestic hot water, alongside radiator or wet underfloor heating circuits on the same appliance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eSmart Control Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eCompatible with \u003cb\u003ethermostats, programmers and smart heating controls\u003c\/b\u003e, allowing zoned or scheduled operation on top of the boiler's own safety cut-outs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:0 0 24px 0;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003ePower Output\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eVoltage\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eMax Current\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eWeight\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P4.5\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e4.5 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈21 A\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P6\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e6.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈27 A\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P9\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e9.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈40 A\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P12\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e12.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈53 A\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P15\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e400V (3-phase)\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈22 A per phase\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P18\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e18.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e400V (3-phase only)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈26 A per phase\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P24\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e24.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e400V (3-phase only)\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈35 A per phase\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:0 0 24px 0;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003ePerformance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eOutput Range\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e4.5kW to 24kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e100% electric-to-heat conversion (no flue losses)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eEfficiency Class\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003eElectrical \u0026amp; Pressure\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eVoltage\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V (single or three-phase, model dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eMax System Pressure\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e2.0 bar (unit); 3 bar per manufacturer datasheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eProtection Rating\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eIP22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eIEC Protection Class\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eClass I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003eIncluded Components\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eCirculation Pump\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eIntegrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e7 litre (spec varies with model size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eSafety Features\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eHigh-limit thermostat, low water protection, pressure relief valve, overheat cut-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003eCompliance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eRegulatory Compliance\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eErP Lot20, UK electrical installation standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e2–5 years depending on registration and installer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eCan this boiler run on a standard domestic single-phase supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eYes, for models up to and including 15kW. These ship with a jumper pin joining the three live terminals for single-phase (230V) connection. Models of 18kW and above require a three-phase (400V) supply.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eHow do I size the right output for my property?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eA rough guide is to allow 1.5kW per radiator, so 4 radiators would suggest a 6kW boiler and 6 radiators would suggest a 9kW unit. Ceiling height, insulation standard and glazing type also affect the real-world demand, so a full heat loss calculation is recommended for larger properties.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eDoes this model include a pump?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eYes — this is the System Boiler variant with an integrated circulation pump, as distinct from ThermoSphere's Heat Only Boiler which is supplied without a pump for systems where one is already present.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eCan it heat both radiators and a hot water cylinder?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eYes, the system boiler is compatible with wet underfloor heating and radiator circuits, and can be paired with an indirect unvented cylinder to provide domestic hot water alongside space heating.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eWhat ongoing maintenance does it need?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eElectric boilers have no combustion process, flue, or annual gas safety inspection requirement, which significantly reduces routine maintenance and callout costs compared with a gas system boiler.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"ThermoSphere","offers":[{"title":"4.5KW 230\/400V","offer_id":58037323628893,"sku":"TSEFB-P4.5","price":1030.0,"currency_code":"GBP","in_stock":true},{"title":"6KW 230\/400V","offer_id":58037323661661,"sku":"TSEFB-P6","price":1100.0,"currency_code":"GBP","in_stock":true},{"title":"9KW 230\/400V","offer_id":58037323694429,"sku":"TSEFB-P9","price":1230.0,"currency_code":"GBP","in_stock":true},{"title":"12KW 230\/400V","offer_id":58037323727197,"sku":"TSEFB-P12","price":1300.0,"currency_code":"GBP","in_stock":true},{"title":"15KW 400V","offer_id":58037323759965,"sku":"TSEFB-P15","price":1350.0,"currency_code":"GBP","in_stock":true},{"title":"18KW 400V","offer_id":58037323792733,"sku":"TSEFB-P18","price":1450.0,"currency_code":"GBP","in_stock":true},{"title":"24KW 400V","offer_id":58037323825501,"sku":"TSEFB-P24","price":1550.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ThermoSphereTSEFBP-ElectricSystemFlowBoilerwithpump_jpg.jpg?v=1752676272"},{"product_id":"thermosphere-flex-electric-combi-boiler-4-14kw","title":"ThermoSphere Flex Electric Combi Boiler 4–14kW – TSFLEX14, Heating + Instant Hot Water, No Flue, 7-Year Warranty","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width,initial-scale=1\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003c!-- INTRO --\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eThermoSphere Flex Electric Combi Boiler (TSFLEX14)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted electric combi boiler providing both central heating and instant domestic hot water\u003c\/strong\u003e from a single self-contained unit — with \u003cstrong\u003eno flue, no gas connection and no separate hot water cylinder\u003c\/strong\u003e. The \u003cstrong\u003eFlex\u003c\/strong\u003e name refers to its defining capability: \u003cstrong\u003edigitally adjustable power output from 4 to 14 kW on the heating circuit and 10 to 14 kW on the DHW circuit\u003c\/strong\u003e, set independently to match the actual heat loss of the property and avoid the wasted energy and cycling of an oversized boiler. It arrives \u003cstrong\u003epre-wired with 10mm² cable and pre-plumbed with an integrated pump and 5-litre expansion vessel\u003c\/strong\u003e — reducing on-site installation time significantly. Compatible with \u003cstrong\u003eradiators, wet underfloor heating, skirting heating and external volt-free controls\u003c\/strong\u003e. At just \u003cstrong\u003e585 × 380 × 235mm\u003c\/strong\u003e and operating at \u003cstrong\u003e30 dB\u003c\/strong\u003e, it installs in the tightest spaces without noise or ventilation concerns. A \u003cstrong\u003e7-year warranty\u003c\/strong\u003e is available when installed with the ThermoSphere Installation Kit and registered online.\u003c\/p\u003e\n\u003c!-- STAT TILES --\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e14 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: 0.85; margin-top: 4px;\"\u003eMax Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e~100%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: 0.85; margin-top: 4px;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e6 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: 0.85; margin-top: 4px;\"\u003eDHW Flow Rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e30 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: 0.85; margin-top: 4px;\"\u003eNoise Level\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e585mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: 0.85; margin-top: 4px;\"\u003eHeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e7 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: 0.85; margin-top: 4px;\"\u003eWarranty (with kit)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SUITABILITY CALLOUT --\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #005c54;\"\u003e\n\u003cstrong\u003eℹ Best Suited To:\u003c\/strong\u003e Smaller homes and flats with \u003cstrong\u003eone bathroom and one shower\u003c\/strong\u003e — off-grid properties, flats without gas, new builds and gas boiler replacements. At 14 kW the DHW circuit delivers ~6 l\/min at a 30°C rise — \u003cstrong\u003esuitable for showers, not recommended for baths\u003c\/strong\u003e. For bath-filling properties, consider a system boiler with a hot water cylinder instead.\u003c\/div\u003e\n\u003c!-- NOT FOR BATHS WARNING --\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 13px 18px; margin: 0 0 22px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Hot Water Flow Rate Advisory:\u003c\/strong\u003e At maximum 14 kW output, the DHW heat exchanger delivers approximately \u003cstrong\u003e6 l\/min at a ΔT of 30°C\u003c\/strong\u003e. ThermoSphere recommends fitting the \u003cstrong\u003e5 l\/min Caleffi flow restrictor\u003c\/strong\u003e (included in the Installation Kit) to ensure consistent hot water temperature on the coldest days. This flow rate is \u003cstrong\u003enot suitable for bath filling\u003c\/strong\u003e — for bath-equipped properties, a system boiler and cylinder is the correct solution.\u003c\/div\u003e\n\u003c!-- APPLICATIONS --\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: 0.05em;\"\u003eIdeal Applications\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(200px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 24px; margin-bottom: 8px;\"\u003e🏠\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003eProperties Without a Gas Supply\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.6;\"\u003eThe Flex is the direct gas-boiler replacement for homes off the gas grid — rural properties, flats, new builds and converted outbuildings where \u003cstrong\u003egas connection is impractical or uneconomic\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 24px; margin-bottom: 8px;\"\u003e🏢\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003eFlats and Apartments\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.6;\"\u003eWall-mounted at \u003cstrong\u003e585 × 380 × 235mm\u003c\/strong\u003e with no flue, it installs in kitchen cupboards and utility spaces where a gas combi would require an external wall.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 24px; margin-bottom: 8px;\"\u003e🌱\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003eRenewable Energy Integration\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.6;\"\u003ePairs directly with \u003cstrong\u003esolar PV, solar diverters and green electricity tariffs\u003c\/strong\u003e. When grid electricity is green or self-generated, the Flex is effectively zero-carbon heating.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 24px; margin-bottom: 8px;\"\u003e🔧\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003eGas Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.6;\"\u003eReplaces an existing gas combi on the same pipework layout. No new flue required. The existing radiator circuit connects directly to the Flex heating ports.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURES --\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: 0.05em;\"\u003eKey Features \u0026amp; Technology\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eFlex — Digitally Adjustable Heating and DHW Output, 4–14 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe defining feature of the Flex is its \u003cstrong\u003edigitally adjustable power output for both the heating circuit (4–14 kW) and the DHW circuit (10–14 kW)\u003c\/strong\u003e independently. A heating engineer can set the heating output to match the calculated heat loss of the property — reducing cycling, lowering running costs and extending component life. ThermoSphere recommends a minimum of \u003cstrong\u003e12 kW for properties with a shower\u003c\/strong\u003e and no lower than 10 kW for properties with wash-hand basins only. Output must be set by a qualified electrician.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e4–14 kW heating\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10–14 kW DHW\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDigitally adjustable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003ePre-Wired and Pre-Plumbed — Fast, Predictable Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe Flex arrives \u003cstrong\u003epre-wired with 10mm² supply cable\u003c\/strong\u003e and \u003cstrong\u003epre-plumbed with integrated pump and 5-litre expansion vessel\u003c\/strong\u003e. The heating circuit connections, pump and vessel are factory-fitted inside the casing — the installer connects mains cold water in, heating flow and return, hot water out, and the 63A electrical supply. No separate pump wiring, no separate vessel fitting. This reduces on-site time significantly compared with a system boiler and component-by-component assembly.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-wired 10mm² cable\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eIntegrated pump\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e5L expansion vessel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDirect Hot Water — No Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe Flex is a \u003cstrong\u003ecombi boiler\u003c\/strong\u003e: it heats domestic hot water \u003cstrong\u003eon demand directly from the mains cold supply\u003c\/strong\u003e, eliminating the need for a hot water storage cylinder. At \u003cstrong\u003e14 kW full output\u003c\/strong\u003e, the heat exchanger raises incoming cold water temperature by \u003cstrong\u003e30°C at 6 l\/min\u003c\/strong\u003e — enough for a comfortable shower. ThermoSphere recommends fitting the \u003cstrong\u003e5 l\/min Caleffi flow restrictor\u003c\/strong\u003e (included in the Installation Kit) to ensure consistent hot water temperature regardless of seasonal variation in incoming mains temperature.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo cylinder\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e6 l\/min at ΔT 30°C\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e5 l\/min flow restrictor recommended\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eRadiators, UFH and Skirting Heating — All Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe heating circuit is designed to work with \u003cstrong\u003eradiators, wet underfloor heating and skirting heating systems\u003c\/strong\u003e. Working temperature range is \u003cstrong\u003e30–80°C\u003c\/strong\u003e, covering both low-temperature UFH circuits (35–45°C) and conventional radiator circuits (55–75°C). Compatible with \u003cstrong\u003eexternal volt-free controls\u003c\/strong\u003e — including programmers, smart thermostats and zone valves — giving the installer full flexibility to design the control system to suit the property.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRadiators\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eWet UFH\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSkirting heating\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eVolt-free controls\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDigital Timer and Thermostat — Integrated Controls\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler has an \u003cstrong\u003eintegrated digital timer and thermostat\u003c\/strong\u003e for both heating and hot water schedules. The control interface allows day-of-week and time-of-day programming directly on the unit, with up\/down buttons to set each period. For more advanced control, the \u003cstrong\u003eEPH Wireless Combi Control Pack 4\u003c\/strong\u003e is included in the ThermoSphere Installation Kit, providing wireless room thermostat control and hot water scheduling.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBuilt-in timer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBuilt-in thermostat\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eEPH wireless pack in kit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003e~100% Efficient — Zero On-Site Emissions, No Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs an electric boiler, the Flex converts \u003cstrong\u003evirtually 100% of the electrical energy drawn into useful heat\u003c\/strong\u003e — there are no flue losses, no combustion inefficiency and no standby pilot flame. \u003cstrong\u003eZero on-site carbon or fossil fuel emissions\u003c\/strong\u003e means no flue penetration is required, no CO detector is mandated by the boiler itself, and installation is possible on any external or internal wall. Compatible with \u003cstrong\u003erenewable electricity sources\u003c\/strong\u003e including solar PV, wind and green tariffs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e~100% efficient\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero on-site emissions\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar compatible\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQuiet Operation — 30 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe Flex operates at just \u003cstrong\u003e30 dB\u003c\/strong\u003e — quieter than a typical library. The electric heating elements have no moving parts and the integrated pump runs quietly within the sealed casing. This makes the boiler suitable for \u003cstrong\u003ebedroom walls, under-stair cupboards and kitchen cabinets\u003c\/strong\u003e where noise from a gas boiler would be unacceptable.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e30 dB\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo combustion noise\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eMinimal Maintenance — No Annual Service Required\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eUnlike gas boilers, the ThermoSphere Flex has \u003cstrong\u003eno mandatory annual service\u003c\/strong\u003e. There is no burner, heat exchanger combustion surface, flue or gas valve to inspect. Recommended periodic checks include system pressure, inhibitor levels and magnetic filter condition — all straightforward tasks. \u003cstrong\u003eNo Gas Safe engineer\u003c\/strong\u003e is required for ongoing maintenance; a competent heating engineer handles any hydraulic work.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo annual service\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo Gas Safe required for maintenance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003e7-Year Warranty — with ThermoSphere Installation Kit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe Flex carries a \u003cstrong\u003e5-year manufacturer's warranty as standard\u003c\/strong\u003e. Install with the \u003cstrong\u003eThermoSphere Installation Kit and register online\u003c\/strong\u003e to extend this to \u003cstrong\u003e7 years total\u003c\/strong\u003e. The kit includes: WRAS-approved filling loop, Sentinel Vortex 250 magnetic filter, Sentinel X100 inhibitor, Sentinel X300 system cleaner, isolation valves (½\" and ¾\"), EPH Wireless Combi Control Pack 4, Caleffi 5 l\/min flow valve and automatic bypass valve. ThermoSphere provides a \u003cstrong\u003ezero-callback guarantee\u003c\/strong\u003e for registered installers — technical support is handled directly, freeing the installer after commissioning.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e5-yr standard\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e7-yr with kit + registration\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero-callback guarantee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- INSTALLATION KIT --\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: 0.05em;\"\u003eInstallation Kit — +2 Years Warranty\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 24px;\"\u003e\n\u003cdiv\u003e\n\u003cp style=\"font-size: 15px; color: #444; line-height: 1.7; margin: 0 0 12px;\"\u003eInstall the Flex with the \u003cstrong\u003eThermoSphere Installation Kit\u003c\/strong\u003e and register online to extend the standard \u003cstrong\u003e5-year warranty to 7 years\u003c\/strong\u003e. The kit supplies all ancillary components needed for a compliant, best-practice installation including a \u003cstrong\u003e5 l\/min flow restrictor\u003c\/strong\u003e critical for reliable DHW temperature, a \u003cstrong\u003emagnetic filter\u003c\/strong\u003e to protect the heat exchanger, and the \u003cstrong\u003eEPH Wireless Combi Control Pack 4\u003c\/strong\u003e for wireless heating and hot water scheduling.\u003c\/p\u003e\n\u003cdiv style=\"background: #e8f5e9; border-left: 4px solid #2e7d32; border-radius: 0 8px 8px 0; padding: 12px 16px; font-size: 15px; color: #1b4332;\"\u003e\n\u003cstrong\u003e✅ 7-Year Warranty:\u003c\/strong\u003e Install with the kit + register online within 30 days of commissioning to activate the full 7-year cover.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-radius: 8px; padding: 16px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 10px; font-size: 15px;\"\u003eKit Contents\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  WRAS-approved filling loop\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  Sentinel Vortex 250 magnetic filter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  Sentinel X100 inhibitor\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  Sentinel X300 system cleaner\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  2 × ½\" isolation valves\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  2 × ¾\" isolation valves\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  EPH Wireless Combi Control Pack 4\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  Caleffi 5 l\/min flow valve\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; padding: 5px 0; border-bottom: 1px solid #dce8e7;\"\u003e✓  Automatic bypass valve\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SPECS --\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: 0.05em;\"\u003eTechnical Specifications (TSFLEX14 Datasheet — 2025)\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;\"\u003eElectrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eVoltage\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V Single Phase 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eRecommended MCB\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63A \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e63A MCB\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eRecommended Cable\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10mm² \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10mm² pre-wired\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eProduct Code\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTSFLEX14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;\"\u003eHeating Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Output (Flex range)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e4 to 14 kW \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e4–14 kW\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Output (Flex range)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 to 14 kW \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10–14 kW\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e30–80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax System Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e6 l\/min at 14 kW, ΔT 30°C \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e6 l\/min\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eRecommended Flow Restriction\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 l\/min (Caleffi valve — in Installation Kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum DHW Power (shower)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum DHW Power (basin only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;\"\u003ePhysical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e585 × 380 × 235 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e30 dB (typical) \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e30 dB\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eProtection Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIPX1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eWall-mounted, indoor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;\"\u003eIntegrated Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePump\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated (pre-plumbed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 litres (integrated) \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e5L vessel\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSupply Cable\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10mm² pre-wired\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDigital timer and thermostat (built-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExternal Controls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eVolt-free terminals for external programmer \/ thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;\"\u003eEnergy \u0026amp; Ratings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~100% (electric resistance heating) \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e~100%\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating — DHW\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eA \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eERP A (DHW)\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating — Heating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eEmissions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eZero on-site carbon \/ fossil fuel emissions \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero on-site emissions\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;\"\u003eWarranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eStandard Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExtended Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e7 years — with Installation Kit + online registration \u003cspan style=\"margin-left: 6px;\"\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: 0.02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e7-yr with kit\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- INSTALLATION NOTE --\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 8px 8px 0; padding: 14px 18px; margin-bottom: 26px; font-size: 15px; color: #005c54;\"\u003e\n\u003cstrong\u003eℹ Installation Requirements:\u003c\/strong\u003e Must be installed by a \u003cstrong\u003equalified heating engineer and a qualified electrician\u003c\/strong\u003e. Fill system to \u003cstrong\u003e1.5 bar\u003c\/strong\u003e; bleed all radiators before powering on. Flush the heating circuit to \u003cstrong\u003eBS 7593\u003c\/strong\u003e and add inhibitor before commissioning. Install on a sturdy, dry, well-ventilated wall — avoid locations prone to moisture build-up or extreme temperature. Confirm adequate electrical capacity at the consumer unit before ordering. Register the installation with ThermoSphere online to activate extended warranty.\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: 0.05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eIs the Flex suitable for my property?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe Flex is best suited to \u003cstrong\u003esmaller homes and flats with a single bathroom and one shower\u003c\/strong\u003e. At 14 kW, the DHW circuit delivers approximately 6 l\/min at a 30°C temperature rise — comfortable for a shower, but \u003cstrong\u003enot recommended for properties with baths\u003c\/strong\u003e where the slower fill rate (around 6 l\/min) may frustrate users. For properties with baths, ThermoSphere recommends a system boiler paired with a hot water cylinder. For sizing the heating circuit, calculate the property's heat loss — the Flex can be set from 4 kW up to 14 kW to match.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply is required?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe Flex requires a \u003cstrong\u003ededicated 230V single-phase 50Hz circuit with a 63A MCB\u003c\/strong\u003e and \u003cstrong\u003e10mm² supply cable\u003c\/strong\u003e. This is a substantial electrical demand — confirm with your electrician that your consumer unit has sufficient spare capacity and that the incoming main fuse (typically 60–80A for most UK properties) can support the additional load alongside existing circuits. The boiler must be installed by a \u003cstrong\u003equalified electrician and a qualified heating engineer\u003c\/strong\u003e working together.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is the Flex technology and why does it matter?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eFlex refers to the \u003cstrong\u003edigitally adjustable power output\u003c\/strong\u003e — both the heating circuit output (4–14 kW) and the DHW circuit output (10–14 kW) can be set independently to match the actual requirements of the property. This matters because an oversized boiler cycles on and off frequently, wasting energy and increasing wear. By sizing the heating output to the calculated heat loss, the boiler runs longer, more efficient cycles. Output adjustment must be made by a qualified electrician.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eHow does the 7-year warranty work?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe standard warranty is \u003cstrong\u003e5 years\u003c\/strong\u003e. To extend to \u003cstrong\u003e7 years\u003c\/strong\u003e, the boiler must be installed with the ThermoSphere Installation Kit and the installation must be \u003cstrong\u003eregistered online with ThermoSphere\u003c\/strong\u003e. The kit includes all the ancillary components needed for a compliant installation. Warranty registration is straightforward — your installer can complete this at commissioning. Always confirm registration has been completed.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes the Flex need a hot water cylinder or expansion vessel?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo cylinder is required — it heats DHW on demand as a combi boiler. An \u003cstrong\u003eexpansion vessel is integrated into the boiler casing\u003c\/strong\u003e (5 litres), so no separate vessel needs to be fitted for the heating circuit in most domestic installations. The system should be filled to \u003cstrong\u003e1.5 bar\u003c\/strong\u003e at commissioning. A \u003cstrong\u003e5 l\/min flow restrictor on the cold mains inlet\u003c\/strong\u003e is strongly recommended (included in the Installation Kit) to ensure consistent DHW temperature year-round, particularly when incoming mains temperature is low in winter.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- RELATED --\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: 0.05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(230px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eThermoSphere Micro Electric Boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eInstant DHW only — no heating circuit, A4-sized\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eThermoSphere Installation Kit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eExtends warranty to 7 years; includes flow valve, filter, inhibitor \u0026amp; controls\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eWet Underfloor Heating Kits\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003ePairs directly with the Flex heating circuit — 30–80°C working range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ThermoSphere","offers":[{"title":"Default Title","offer_id":58037358723421,"sku":"TSFLEX14","price":1170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ThermoSphereFlexElectricCombiBoileside.jpg?v=1769781019"},{"product_id":"ehc-mercury-electric-combi-boilers-12kw-26kw","title":"EHC Mercury Electric Combi Boilers 12kW – 26kW","description":"\u003ch1\u003eMercury Electric Combi Boilers 12kW – 26kW\u003c\/h1\u003e\n\n\u003cul\u003e\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eMercury Electric Combi Boiler\u003c\/strong\u003e is a premium solution for efficient electric central heating and hot water, designed with advanced controls, weather compensation, and service diagnostics. Available in 12kW, 14.4kW (single phase), and 19kW, 26kW (three phase) options, it’s ideal for homes without a gas supply or with gas restrictions. Suitable for radiators and underfloor heating, as well as showers and basins—3-phase models offer sufficient hot water flow rates for bath filling.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Control Panel:\u003c\/strong\u003e Adjust operating temperatures with ease (20–85°C heating, 30–60°C hot water).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Efficiency:\u003c\/strong\u003e Delivers instant central heating and hot water on demand—no flue required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Output Range:\u003c\/strong\u003e Four sizes — 12kW, 14.4kW (single phase); 19kW, 26kW (three phase) — for property requirements from flats to larger homes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Features:\u003c\/strong\u003e Weather compensation, service diagnostics, and safety controls as standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety \u0026amp; Warranty:\u003c\/strong\u003e Comprehensive 5-year warranty on all models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Ideal for off-grid homes, listed buildings, bedsits, and properties where emissions or flue access is an issue.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eSingle\/Three Phase\u003c\/th\u003e\n\u003cth\u003eBTU\u003c\/th\u003e\n\u003cth\u003eDimensions (HxWxD, mm)\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eLoad Current\u003c\/th\u003e\n\u003cth\u003eCircuit Protection\u003c\/th\u003e\n\u003cth\u003eMin Cable Size\u003c\/th\u003e\n\u003cth\u003eTemperature Range Heating\u003c\/th\u003e\n\u003cth\u003eTemp. Range Hot Water\u003c\/th\u003e\n\u003cth\u003eERP Rating\u003c\/th\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMERCURY12KW\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003ctd\u003eCombi\u003c\/td\u003e\n\u003ctd\u003eSingle Phase\u003c\/td\u003e\n\u003ctd\u003e40,945\u003c\/td\u003e\n\u003ctd\u003e690 × 451 × 258\u003c\/td\u003e\n\u003ctd\u003e26 kg\u003c\/td\u003e\n\u003ctd\u003e52A\u003c\/td\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003e10 mm²\u003c\/td\u003e\n\u003ctd\u003e20–85°C\u003c\/td\u003e\n\u003ctd\u003e30–60°C\u003c\/td\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMERCURY14.4KW\u003c\/td\u003e\n\u003ctd\u003e14.4 kW\u003c\/td\u003e\n\u003ctd\u003eCombi\u003c\/td\u003e\n\u003ctd\u003eSingle Phase\u003c\/td\u003e\n\u003ctd\u003e49,161\u003c\/td\u003e\n\u003ctd\u003e690 × 451 × 258\u003c\/td\u003e\n\u003ctd\u003e26 kg\u003c\/td\u003e\n\u003ctd\u003e60A\u003c\/td\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003e10 mm²\u003c\/td\u003e\n\u003ctd\u003e20–85°C\u003c\/td\u003e\n\u003ctd\u003e30–60°C\u003c\/td\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMERCURY19KW\u003c\/td\u003e\n\u003ctd\u003e19 kW\u003c\/td\u003e\n\u003ctd\u003eCombi\u003c\/td\u003e\n\u003ctd\u003eThree Phase\u003c\/td\u003e\n\u003ctd\u003e64,830\u003c\/td\u003e\n\u003ctd\u003e690 × 451 × 258\u003c\/td\u003e\n\u003ctd\u003e26 kg\u003c\/td\u003e\n\u003ctd\u003e3 × 27A\u003c\/td\u003e\n\u003ctd\u003e3 × 32A\u003c\/td\u003e\n\u003ctd\u003e5 × 4 mm²\u003c\/td\u003e\n\u003ctd\u003e20–85°C\u003c\/td\u003e\n\u003ctd\u003e30–60°C\u003c\/td\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMERCURY26KW\u003c\/td\u003e\n\u003ctd\u003e26 kW\u003c\/td\u003e\n\u003ctd\u003eCombi\u003c\/td\u003e\n\u003ctd\u003eThree Phase\u003c\/td\u003e\n\u003ctd\u003e88,715\u003c\/td\u003e\n\u003ctd\u003e690 × 451 × 258\u003c\/td\u003e\n\u003ctd\u003e19–26 kg\u003c\/td\u003e\n\u003ctd\u003e3 × 35A\u003c\/td\u003e\n\u003ctd\u003e3 × 40A\u003c\/td\u003e\n\u003ctd\u003e5 × 6 mm²\u003c\/td\u003e\n\u003ctd\u003e20–85°C\u003c\/td\u003e\n\u003ctd\u003e30–60°C\u003c\/td\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eMercury Electric Combi Boiler Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eProperties without mains gas or with gas boiler restrictions\u003c\/li\u003e\n\u003cli\u003eWet central heating with radiators and underfloor heating\u003c\/li\u003e\n\u003cli\u003eShowers and sink hot water (14.4kW+ for larger DHW load; 19kW\/26kW models can fill baths)\u003c\/li\u003e\n\u003cli\u003eHybrid setups with hot water cylinders for high DHW demand\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eMercury Electric Combi Boiler (selected output 12kW to 26kW)\u003c\/li\u003e\n\u003cli\u003eDigital control panel\u003c\/li\u003e\n\u003cli\u003eInstallation guide and warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose Mercury Electric Combi Boiler?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eWide range (12kW–26kW) for flats to large homes\u003c\/li\u003e\n\u003cli\u003eAdvanced controls, diagnostics, and safety\u003c\/li\u003e\n\u003cli\u003eNo flue, no emissions, ultra-quiet operation\u003c\/li\u003e\n\u003cli\u003e5-year warranty and proven reliability\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EHC","offers":[{"title":"12kW","offer_id":58051643343197,"sku":"MERCURY12KW","price":1550.0,"currency_code":"GBP","in_stock":true},{"title":"14.4kW","offer_id":58051643375965,"sku":"MERCURY15KW","price":1570.0,"currency_code":"GBP","in_stock":true},{"title":"19kW","offer_id":58051643408733,"sku":"MERCURY19KW","price":1900.0,"currency_code":"GBP","in_stock":true},{"title":"26kW","offer_id":58051643441501,"sku":"MERCURY26KW","price":1910.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ehc-mercury-combi-boilers.jpg?v=1752850898"},{"product_id":"elterm-ensign-electric-combi-boiler-6kw-ch-14kw-dhw","title":"Elterm Ensign Electric Combi Boiler 6kW CH \/ 14kW DHW","description":"\u003c!-- SEO Product Name: Elterm Ensign 6kW CH Electric Combi Boiler | AsC 135706 --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Ensign (AsC) 6kW CH \/ 11-24kW DHW electric combi boiler\u003c\/strong\u003e combines a central heating body and an instantaneous hot water heater in a single wall-mounted housing. It delivers \u003cstrong\u003e6kW of central heating output\u003c\/strong\u003e alongside \u003cstrong\u003e11-24kW of instantaneous domestic hot water\u003c\/strong\u003e, with no external hot water cylinder required — making it a compact fit for flats and smaller properties without mains gas.\u003c\/p\u003e\n\u003cp\u003eManufactured by Elterm using \u003cstrong\u003eBasic LED automation\u003c\/strong\u003e, the Ensign's two functions operate independently of one another: the central heating and hot water sides can run at the same time without one affecting the other's temperature control. The unit includes \u003cstrong\u003e4x PV-ready functionality\u003c\/strong\u003e for cooperation with a solar installation, and can be paired with any voltage-free (0V) wired or wireless room controller.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e6kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eCentral heating output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e11-24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eDHW instantaneous output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003eClass D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eEnergy efficiency (A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e24 months\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e70°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e4x\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003ePV-ready features included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #c0392b; margin-bottom: 4px;\"\u003eInstallation, Electrical Safety \u0026amp; Warranty\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eElectrical and hydraulic assembly must be carried out by a qualified, legally authorised installer, with overcurrent and RCD protection sized correctly for the model. To keep the manufacturer's extended guarantee valid, a boiler protection kit (magnetic filter and water descaler) must be fitted and the heating system flushed, cleansed and inhibited to BS 7593 before commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eInstantaneous Hot Water — Usage Notes\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eThe DHW side heats water on demand rather than storing it, so it is best suited to one hot water outlet running at a time (or two taps together on the higher-output 11-24kW versions). A magnetic filter on the hot water side is strongly recommended to protect the instantaneous heater from limescale damage and blockage, particularly in hard water areas.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eTwo Systems, One Housing\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eA \u003cstrong\u003ecentral heating boiler and an instantaneous DHW flow heater share one wall-mounted unit\u003c\/strong\u003e, cutting installation cost and freeing up space that a separate cylinder would otherwise use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eIndependent Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eThe central heating and hot water functions \u003cstrong\u003eoperate independently\u003c\/strong\u003e of each other, so demand on one side does not interrupt performance on the other.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003ePV Ready Functionality\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eIncludes \u003cstrong\u003e4x PV-ready features\u003c\/strong\u003e — an operation counter, adjustable maximum power lock, a voltage-free (0V) contact for external control, and a disconnectable contact for a second heat source — to help the boiler cooperate with solar generation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eSealed or Open Vented\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eCan operate in \u003cstrong\u003eboth sealed and air-vented heating systems\u003c\/strong\u003e, giving flexibility when retrofitting into an existing wet central heating circuit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eCompact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eNo cylinder, no flue, and a \u003cstrong\u003esingle wall-mounted footprint\u003c\/strong\u003e make the Ensign well suited to flats and properties where space and installation access are limited.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eGSM \u0026amp; Wi-Fi Control Options\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eCompatible with \u003cstrong\u003eoptional GSM and Wi-Fi controllers\u003c\/strong\u003e, plus radio control variants for room and weather-compensated operation, for remote monitoring and adjustment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eTechnical Specification — Elterm Ensign (AsC) 6kW CH \/ 11-24kW DHW\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eModel code\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e135706 (11\/13kW DHW) · 135806 (18\/21\/24kW DHW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCentral heating power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e6kW \/ 400V\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW instantaneous power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e11-24kW (modulated)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAutomation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eBasic LED control panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eD (ErP scale spans A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e70°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax DHW operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e65°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCH connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e¾\" external\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e½\" external\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCentral heating equipment included\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e4l expansion vessel, circulation pump, safety valve, air vent, electronic pressure gauge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW flow rate (Δt = 30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e5.7-6.9 l\/min (11-13kW flow heater) or up to 12.2 l\/min (18-24kW flow heater variants on this platform)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eSystem compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eSealed or open-vented (air-vented) central heating systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eStandards compliance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eLVD, RoHS, EMC, WEEE, ErP directives\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e24 months from installation date; extended guarantee available subject to protection kit and BS 7593 flushing\/inhibiting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 24px 0;\"\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan the Ensign fill a bath without running out of hot water?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. Because it heats water instantaneously rather than storing it in a cylinder, the DHW side does not run out the way a stored hot water system can — provided demand stays within the flow rate the unit is rated for.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan the 6kW central heating side run at the same time as the hot water?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. The central heating and DHW functions in the Ensign operate independently of one another, so hot water demand does not reduce central heating output, and vice versa.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eDo I need a hot water cylinder with this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eNo. The Ensign's built-in instantaneous flow heater removes the need for a separate hot water storage cylinder, which is one of the main reasons it suits flats and space-constrained properties.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat protects the hot water side from limescale?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eA magnetic filter fitted on the hot water inlet is strongly recommended to prevent limescale build-up and protect the instantaneous heater from damage or blockage, especially in hard water areas.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat electrical supply does this model need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eConfirm this against the rating plate and a qualified electrician's assessment: Elterm's manufacturer documentation shows the Ensign range built mainly for 400V 3-phase supply, though some versions and UK listings describe single-phase configurations. Never assume the supply type without checking the specific unit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"Default Title","offer_id":62780297216349,"sku":"Ensign6kW-1ph","price":1770.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/eltermelectriccombinationboilersinglephase.jpg?v=1764771234"},{"product_id":"elterm-ensign-electric-combi-boiler-9kw-ch-14kw-dhw","title":"Elterm Ensign Electric Combi Boiler 9kW CH \/ 14kW DHW","description":"\u003c!-- SEO Product Name: Elterm Ensign 9kW CH Electric Combi Boiler | AsC 135709 --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Ensign (AsC) 9kW CH \/ 11-24kW DHW electric combi boiler\u003c\/strong\u003e combines a central heating body and an instantaneous hot water heater in a single wall-mounted housing. It delivers \u003cstrong\u003e9kW of central heating output\u003c\/strong\u003e alongside \u003cstrong\u003e11-24kW of instantaneous domestic hot water\u003c\/strong\u003e, with no external hot water cylinder required — making it a compact fit for flats and smaller properties without mains gas.\u003c\/p\u003e\n\u003cp\u003eManufactured by Elterm using \u003cstrong\u003eBasic LED automation\u003c\/strong\u003e, the Ensign's two functions operate independently of one another: the central heating and hot water sides can run at the same time without one affecting the other's temperature control. The unit includes \u003cstrong\u003e4x PV-ready functionality\u003c\/strong\u003e for cooperation with a solar installation, and can be paired with any voltage-free (0V) wired or wireless room controller.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eCentral heating output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e11-24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eDHW instantaneous output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003eClass D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eEnergy efficiency (A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e24 months\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e70°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e4x\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003ePV-ready features included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #c0392b; margin-bottom: 4px;\"\u003eInstallation, Electrical Safety \u0026amp; Warranty\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eElectrical and hydraulic assembly must be carried out by a qualified, legally authorised installer, with overcurrent and RCD protection sized correctly for the model. To keep the manufacturer's extended guarantee valid, a boiler protection kit (magnetic filter and water descaler) must be fitted and the heating system flushed, cleansed and inhibited to BS 7593 before commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eInstantaneous Hot Water — Usage Notes\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eThe DHW side heats water on demand rather than storing it, so it is best suited to one hot water outlet running at a time (or two taps together on the higher-output 11-24kW versions). A magnetic filter on the hot water side is strongly recommended to protect the instantaneous heater from limescale damage and blockage, particularly in hard water areas.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eTwo Systems, One Housing\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eA \u003cstrong\u003ecentral heating boiler and an instantaneous DHW flow heater share one wall-mounted unit\u003c\/strong\u003e, cutting installation cost and freeing up space that a separate cylinder would otherwise use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eIndependent Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eThe central heating and hot water functions \u003cstrong\u003eoperate independently\u003c\/strong\u003e of each other, so demand on one side does not interrupt performance on the other.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003ePV Ready Functionality\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eIncludes \u003cstrong\u003e4x PV-ready features\u003c\/strong\u003e — an operation counter, adjustable maximum power lock, a voltage-free (0V) contact for external control, and a disconnectable contact for a second heat source — to help the boiler cooperate with solar generation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eSealed or Open Vented\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eCan operate in \u003cstrong\u003eboth sealed and air-vented heating systems\u003c\/strong\u003e, giving flexibility when retrofitting into an existing wet central heating circuit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eCompact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eNo cylinder, no flue, and a \u003cstrong\u003esingle wall-mounted footprint\u003c\/strong\u003e make the Ensign well suited to flats and properties where space and installation access are limited.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eGSM \u0026amp; Wi-Fi Control Options\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eCompatible with \u003cstrong\u003eoptional GSM and Wi-Fi controllers\u003c\/strong\u003e, plus radio control variants for room and weather-compensated operation, for remote monitoring and adjustment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eTechnical Specification — Elterm Ensign (AsC) 9kW CH \/ 11-24kW DHW\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eModel code\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e135709 (11\/13kW DHW) · 135809 (18\/21\/24kW DHW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCentral heating power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e9kW \/ 400V\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW instantaneous power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e11-24kW (modulated)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAutomation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eBasic LED control panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eD (ErP scale spans A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e70°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax DHW operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e65°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCH connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e¾\" external\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e½\" external\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCentral heating equipment included\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e4l expansion vessel, circulation pump, safety valve, air vent, electronic pressure gauge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW flow rate (Δt = 30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e5.7-6.9 l\/min (11-13kW flow heater) or up to 12.2 l\/min (18-24kW flow heater variants on this platform)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eSystem compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eSealed or open-vented (air-vented) central heating systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eStandards compliance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eLVD, RoHS, EMC, WEEE, ErP directives\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e24 months from installation date; extended guarantee available subject to protection kit and BS 7593 flushing\/inhibiting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 24px 0;\"\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan the Ensign fill a bath without running out of hot water?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. Because it heats water instantaneously rather than storing it in a cylinder, the DHW side does not run out the way a stored hot water system can — provided demand stays within the flow rate the unit is rated for.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan the 9kW central heating side run at the same time as the hot water?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. The central heating and DHW functions in the Ensign operate independently of one another, so hot water demand does not reduce central heating output, and vice versa.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eDo I need a hot water cylinder with this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eNo. The Ensign's built-in instantaneous flow heater removes the need for a separate hot water storage cylinder, which is one of the main reasons it suits flats and space-constrained properties.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat protects the hot water side from limescale?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eA magnetic filter fitted on the hot water inlet is strongly recommended to prevent limescale build-up and protect the instantaneous heater from damage or blockage, especially in hard water areas.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat electrical supply does this model need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eConfirm this against the rating plate and a qualified electrician's assessment: Elterm's manufacturer documentation shows the Ensign range built mainly for 400V 3-phase supply, though some versions and UK listings describe single-phase configurations. Never assume the supply type without checking the specific unit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"Default Title","offer_id":62780508569949,"sku":"Ensign9kW-1ph","price":1870.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/eltermelectriccombinationboilersinglephase.jpg?v=1764771234"},{"product_id":"elterm-ensign-electric-combi-boiler-12kw-ch-14kw-dhw","title":"Elterm Ensign Electric Combi Boiler 12kW CH \/ 14kW DHW","description":"\u003c!-- SEO Product Name: Elterm Ensign 12kW CH Electric Combi Boiler | AsC 135712 --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Ensign (AsC) 12kW CH \/ 11-24kW DHW electric combi boiler\u003c\/strong\u003e combines a central heating body and an instantaneous hot water heater in a single wall-mounted housing. It delivers \u003cstrong\u003e12kW of central heating output\u003c\/strong\u003e alongside \u003cstrong\u003e11-24kW of instantaneous domestic hot water\u003c\/strong\u003e, with no external hot water cylinder required — making it a compact fit for flats and smaller properties without mains gas.\u003c\/p\u003e\n\u003cp\u003eManufactured by Elterm using \u003cstrong\u003eBasic LED automation\u003c\/strong\u003e, the Ensign's two functions operate independently of one another: the central heating and hot water sides can run at the same time without one affecting the other's temperature control. The unit includes \u003cstrong\u003e4x PV-ready functionality\u003c\/strong\u003e for cooperation with a solar installation, and can be paired with any voltage-free (0V) wired or wireless room controller.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e12kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eCentral heating output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e11-24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eDHW instantaneous output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003eClass D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eEnergy efficiency (A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e24 months\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e70°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e4x\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003ePV-ready features included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #c0392b; margin-bottom: 4px;\"\u003eInstallation, Electrical Safety \u0026amp; Warranty\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eElectrical and hydraulic assembly must be carried out by a qualified, legally authorised installer, with overcurrent and RCD protection sized correctly for the model. To keep the manufacturer's extended guarantee valid, a boiler protection kit (magnetic filter and water descaler) must be fitted and the heating system flushed, cleansed and inhibited to BS 7593 before commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eInstantaneous Hot Water — Usage Notes\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eThe DHW side heats water on demand rather than storing it, so it is best suited to one hot water outlet running at a time (or two taps together on the higher-output 11-24kW versions). A magnetic filter on the hot water side is strongly recommended to protect the instantaneous heater from limescale damage and blockage, particularly in hard water areas.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eTwo Systems, One Housing\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eA \u003cstrong\u003ecentral heating boiler and an instantaneous DHW flow heater share one wall-mounted unit\u003c\/strong\u003e, cutting installation cost and freeing up space that a separate cylinder would otherwise use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eIndependent Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eThe central heating and hot water functions \u003cstrong\u003eoperate independently\u003c\/strong\u003e of each other, so demand on one side does not interrupt performance on the other.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003ePV Ready Functionality\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eIncludes \u003cstrong\u003e4x PV-ready features\u003c\/strong\u003e — an operation counter, adjustable maximum power lock, a voltage-free (0V) contact for external control, and a disconnectable contact for a second heat source — to help the boiler cooperate with solar generation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eSealed or Open Vented\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eCan operate in \u003cstrong\u003eboth sealed and air-vented heating systems\u003c\/strong\u003e, giving flexibility when retrofitting into an existing wet central heating circuit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eCompact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eNo cylinder, no flue, and a \u003cstrong\u003esingle wall-mounted footprint\u003c\/strong\u003e make the Ensign well suited to flats and properties where space and installation access are limited.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eGSM \u0026amp; Wi-Fi Control Options\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eCompatible with \u003cstrong\u003eoptional GSM and Wi-Fi controllers\u003c\/strong\u003e, plus radio control variants for room and weather-compensated operation, for remote monitoring and adjustment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eTechnical Specification — Elterm Ensign (AsC) 12kW CH \/ 11-24kW DHW\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eModel code\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e135712 (11\/13kW DHW) · 135812 (18\/21\/24kW DHW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCentral heating power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e12kW \/ 400V\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW instantaneous power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e11-24kW (modulated)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAutomation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eBasic LED control panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eD (ErP scale spans A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e70°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax DHW operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e65°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCH connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e¾\" external\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e½\" external\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eCentral heating equipment included\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e4l expansion vessel, circulation pump, safety valve, air vent, electronic pressure gauge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eDHW flow rate (Δt = 30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e5.7-6.9 l\/min (11-13kW flow heater) or up to 12.2 l\/min (18-24kW flow heater variants on this platform)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eSystem compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eSealed or open-vented (air-vented) central heating systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eStandards compliance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eLVD, RoHS, EMC, WEEE, ErP directives\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e24 months from installation date; extended guarantee available subject to protection kit and BS 7593 flushing\/inhibiting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 24px 0;\"\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan the Ensign fill a bath without running out of hot water?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. Because it heats water instantaneously rather than storing it in a cylinder, the DHW side does not run out the way a stored hot water system can — provided demand stays within the flow rate the unit is rated for.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan the 12kW central heating side run at the same time as the hot water?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. The central heating and DHW functions in the Ensign operate independently of one another, so hot water demand does not reduce central heating output, and vice versa.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eDo I need a hot water cylinder with this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eNo. The Ensign's built-in instantaneous flow heater removes the need for a separate hot water storage cylinder, which is one of the main reasons it suits flats and space-constrained properties.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat protects the hot water side from limescale?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eA magnetic filter fitted on the hot water inlet is strongly recommended to prevent limescale build-up and protect the instantaneous heater from damage or blockage, especially in hard water areas.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat electrical supply does this model need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eConfirm this against the rating plate and a qualified electrician's assessment: Elterm's manufacturer documentation shows the Ensign range built mainly for 400V 3-phase supply, though some versions and UK listings describe single-phase configurations. Never assume the supply type without checking the specific unit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"Default Title","offer_id":62780773466461,"sku":"Ensign12kW-1ph","price":1970.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/eltermelectriccombinationboilersinglephase.jpg?v=1764771234"},{"product_id":"elterm-commercial-electric-boiler-range-high-power-system-boilers","title":"Elterm Battalion Commercial Electric Boiler - 30-48kW 3-Phase System Boiler","description":"\u003cdiv style=\"font-size: 16px; line-height: 1.6; max-width: 900px; margin: 0 auto; color: #1a1a1a; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"margin: 0 0 22px 0;\"\u003eThe \u003cstrong\u003eElterm Battalion (AsBIII)\u003c\/strong\u003e is a \u003cstrong\u003ecommercial electric central-heating boiler\u003c\/strong\u003e built for continuous industrial duty, available in four factory outputs — \u003cstrong\u003e30kW, 36kW, 42kW and 48kW\u003c\/strong\u003e — all running on a \u003cstrong\u003e400V three-phase\u003c\/strong\u003e supply. It uses industrial-grade solid-state relay switching and \u003cstrong\u003ethree-stage PID power modulation\u003c\/strong\u003e to bring a building up to temperature smoothly rather than in full-power bursts, and it's \u003cstrong\u003ePV-ready\u003c\/strong\u003e, so it can throttle its own draw to cooperate with an on-site solar installation. A volt-free switching contact for a second heat source makes it equally suited as the primary boiler for a commercial building or as a \u003cstrong\u003ebackup\/peak source alongside a heat pump or gas boiler\u003c\/strong\u003e. Units can be \u003cstrong\u003ecascaded in parallel for outputs up to 1.5MW\u003c\/strong\u003e, and each boiler is configured to order with a typical \u003cstrong\u003elead time of 5–7 working days\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 -4px 22px -4px;\"\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e30–48kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003ePower range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e~99.5%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eElectric-to-heat efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e400V 3-Phase\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003ePower supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e95°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eMax C.H. flow temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e1.5MW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eCascade capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e5–7 Days\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eTypical lead time\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #C0392B; background: #FDEDEC; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003eQualified Installation Required\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eElectrical connection, commissioning and any work carried out with the casing removed must be done by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e in accordance with UK wiring regulations (BS 7671) and Part P. Adequate overcurrent and residual current (RCD) protection is mandatory, and the installation must include a means of disconnection at all poles with a contact gap of at least 3mm.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #B7791F; background: #FEF6E7; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #b7791f;\"\u003eNo Expansion Vessel Supplied — Model \u0026amp; Naming Notes\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eThe Battalion (AsBIII) range is supplied \u003cstrong\u003ewithout an expansion vessel, safety valve or safety group\u003c\/strong\u003e. On a sealed\/closed heating system these must be sized for the installation and fitted by the installer before commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #B7791F; background: #FEF6E7; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #b7791f;\"\u003eBuilt to Order — Customisation \u0026amp; Lead Time\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eThis range is configured to order: choose your 30\/36\/42\/48kW output, add the optional \u003cstrong\u003eD.H.W. priority pack\u003c\/strong\u003e, or cascade multiple units for outputs above 48kW. Typical lead time is \u003cstrong\u003e5–7 working days\u003c\/strong\u003e. Contact us for a tailored quote on cascade or multi-unit schemes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #008377; background: #f0faf9; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #008377;\"\u003ePV-Ready \u0026amp; Heat Pump Cooperation\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eA built-in energy counter and adjustable maximum-power lock let the boiler limit its own draw so it preferentially uses available solar generation before pulling from the grid. A volt-free switching contact can also hand control to a second heat source — useful where this boiler backs up a heat pump or bridges a gap before a gas connection is available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 -6px 22px -6px;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eIndustrial SSR Switching\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eSolid-state relays replace mechanical contactors, so the frequent on\/off cycling of continuous commercial duty doesn't wear down physical contacts — a key reason this range is rated for industrial and continuous operation rather than domestic-only use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eThree-Stage PID Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eEach output splits its heater bank into three roughly equal stages (for example 16-16-16kW on the 48kW unit) and uses PID logic to bring the system to temperature progressively, cutting short-cycling and reducing the size of the electrical demand spike at start-up.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eEqual Phase Loading\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eHeater banks are wired so each of the three supply phases carries a matching share of the load, keeping the incoming three-phase supply balanced rather than skewed onto a single leg — important for larger commercial connections where phase imbalance can trip protection or draw penalties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eBivalent Heat-Source Switching\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eA volt-free contact disconnects a second heat source (such as a gas boiler) the moment the electric boiler switches on, and reconnects it when the electric boiler switches off — the mechanism behind its role as a heat pump or gas boiler backup.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eCascade-Ready Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eMultiple Battalion units can be linked and sequenced together, which is how Elterm rates this range for combined outputs of up to 1.5MW — useful once a single building's demand outgrows the 48kW ceiling of one unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eWatch Dog \u0026amp; Anti-Stop Protection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eA processor monitoring routine, quadruple overheat cut-out and a periodic anti-seize pump run protect the unit through long, unattended commercial operating cycles rather than relying on manual checks.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin: 0 0 8px 0;\"\u003eModel comparison — all variants 400V 3-phase, 50Hz\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 22px 0;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; min-width: 520px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eElterm Code\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eRated Output\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eHeater Configuration\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eModulation Stages\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eFuse Protection\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eSupply Cable\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116030\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e6 × 3kW + 6 × 2kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e10-10-10kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 50A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 16mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116036\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12 × 3kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12-12-12kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 63A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 16mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 42kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116042\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e42kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e6 × 4kW + 6 × 3kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e14-14-14kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 80A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 25mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 48kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116048\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e48kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12 × 4kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e16-16-16kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 80A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 25mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin: 0 0 8px 0;\"\u003eGeneral specification — common across all outputs\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 22px 0;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; min-width: 520px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCommercial electric central-heating boiler (space heating only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eControl\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eIndustrial Basic LED automation, PID regulator, 3-stage output modulation (33\/66\/100%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eElectric-to-heat efficiency\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eApprox. 99.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eMax C.H. flow temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eUp to 95°C (industrial series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eTemperature setting range\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5–95°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eD (ErP space-heater scale, spectrum A+++ to D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCabinet dimensions (W × H)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e410mm × 680mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003ePipework connections\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e2 × 1\" BSP external thread (flow \u0026amp; return)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCable entry\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eØ29.8mm, from the top or rear of the casing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCirculating pump\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eFactory-fitted electronic pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eExpansion vessel \/ safety group\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eNot supplied — must be provided by the installer on closed systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eOptional D.H.W. pack\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3-way D.H.W. priority valve + cylinder sensor + activation code (code 100003); requires a separate cylinder with coil, min. 12kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCascade capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eMultiple units may be cascaded for a combined output of up to 1.5MW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCompliance\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEcodesign 2009\/125\/EU, RoHS 2011\/65\/EU, EMC 2014\/30\/EU, Low Voltage 2014\/35\/EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 years (36 months) when registered at eltermlondon.co.uk within 30 days of installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eLead time\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5–7 working days (configured to order)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin: 0 0 8px 0;\"\u003eSizing guide by building floor area (manufacturer reference — outputs above 48kW require cascaded units)\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 22px 0;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; min-width: 520px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eInsulation standard\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e250m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e300m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e400m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e500m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e600m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e700m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e800m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e1000m²\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEnergy-efficient (20–25cm insulation, A+\/A)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e15kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e18kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e24kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e24kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e42kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eStandard (10–15cm insulation, B\/C)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e18kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e24kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e42kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e54kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e60kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e72kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEnergy-intensive (0–5cm insulation, D\/E)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e48kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e60kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e72kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e84kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e96kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e126kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eDoes the Battalion 30–48kW boiler come with an expansion vessel or safety valve?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eNo. Per Elterm's installation manual, the Battalion (AsBIII) range is supplied without an expansion vessel, safety valve or safety group. On a sealed\/closed heating system these must be sized for your installation and fitted by your installer before commissioning.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eCan this boiler be customised or scaled up for larger buildings?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eYes. Choose from four factory outputs (30\/36\/42\/48kW), add the optional D.H.W. priority pack, or cascade multiple units in parallel — Elterm rates this range for cascaded installations up to 1.5MW total output. Contact us for a tailored quote on multi-unit schemes.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eWhat's the lead time on this product?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eTypical lead time is 5–7 working days, as each unit is configured to order.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eCan the boiler work alongside a heat pump or an existing gas boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eYes. A volt-free switching contact lets the Battalion hand control to a second heat source when it's switched off, and take back over when it fires — making it well suited as a peak\/backup source alongside an air source heat pump or as a bridge while awaiting a gas connection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eWhat electrical supply and protection does each output need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eAll four models run on a 400V 3-phase supply. Protection ranges from 3 × 50A fuses with 5 × 16mm² cable on the 30kW unit up to 3 × 80A fuses with 5 × 25mm² cable on the 42kW and 48kW units — see the model comparison table above for the exact figures per model.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eDoes this need to be installed by a qualified electrician?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eYes. Electrical connection, commissioning and any work carried out with the casing removed must be done by a qualified electrician, and the installation must include adequate overcurrent and RCD protection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"30kW - 400V 3‑phase","offer_id":62781763649885,"sku":"Elterm30kw","price":1795.0,"currency_code":"GBP","in_stock":true},{"title":"36kW - 400V 3‑phase","offer_id":62781763682653,"sku":"Elterm36kw","price":1895.0,"currency_code":"GBP","in_stock":true},{"title":"42kW - 400V 3‑phase","offer_id":62781763715421,"sku":"Elterm42kw","price":1995.0,"currency_code":"GBP","in_stock":true},{"title":"48kW - 400V 3‑phase","offer_id":62781763748189,"sku":"Elterm48kw","price":2100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EltermCommercialBoilerElectricwallmounted.jpg?v=1764781384"},{"product_id":"elterm-electric-system-boiler-4-to-14kw-reliable-efficient-heating","title":"Elterm Electric System Boiler 4 to 14kW","description":"\u003c!-- SEO Product Name: Elterm Sergeant 4-14kW Electric System Boiler | AsBN | DHW Ready --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Sergeant (AsBN) electric system boiler\u003c\/strong\u003e is built to heat both radiator or underfloor heating circuits and, when the optional DHW package is fitted, a separate domestic hot water cylinder. In the \u003cstrong\u003e4kW to 14kW\u003c\/strong\u003e output band it is well matched to flats, apartments and smaller homes without a mains gas supply, or to properties adding electric heating as a backup to a heat pump.\u003c\/p\u003e\n\u003cp\u003eBuilt on Elterm's \u003cstrong\u003eBasic LED automation\u003c\/strong\u003e platform, the boiler is wall-mounted, requires no flue, and includes a built-in expansion vessel, circulation pump and safety valve as standard. Its \u003cstrong\u003eoptional DHW package\u003c\/strong\u003e adds a three-way solenoid valve, cylinder sensor and priority DHW logic, so heating and hot water can run from the same compact unit.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e4-14kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003ePower range covered\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e99.5%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eBoiler efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003eClass D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eEnergy efficiency (A+++ to D scale)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e24 months\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e70°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003ePV Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003e4x solar-integration features\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #c0392b; margin-bottom: 4px;\"\u003eInstallation \u0026amp; Electrical Safety\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eElectrical and hydraulic installation, commissioning and servicing must be carried out by a qualified, legally authorised installer, with overcurrent and RCD protection sized to the fuse and cable table below. The manufacturer's 24-month guarantee is void if the boiler is connected or operated incorrectly, or if a boiler protection kit (magnetic filter and water descaler) is not fitted where required by the warranty terms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eCompact, Flue-Free Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eWall-mounted with \u003cstrong\u003eno flue or chimney connection required\u003c\/strong\u003e, making it straightforward to fit in flats, utility cupboards or plant rooms without external ventilation work.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003ePV Ready Functionality\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eIncludes an \u003cstrong\u003eoperation counter, adjustable maximum power lock, voltage-free (0V) contact, and disconnectable contact\u003c\/strong\u003e for cooperating with a solar PV installation or a second heat source.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eBuilt-In System Components\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eComes with an integrated \u003cstrong\u003eexpansion vessel, circulation pump, safety valve, air vent and pressure gauge\u003c\/strong\u003e, reducing the number of separate parts an installer needs to source.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eModulating Output\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eHigher-output versions can be \u003cstrong\u003esplit into lower power stages\u003c\/strong\u003e via the control panel, allowing the same unit to be de-rated to suit the actual heat loss of the property once installed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eHygienisation Cycle\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eWhere the DHW package is fitted, a built-in \u003cstrong\u003ehygienisation function heats the cylinder to 70°C\u003c\/strong\u003e to control Legionella risk, recommended every 2 to 3 weeks.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eAnti-Stop Protection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eAn automatic \u003cstrong\u003eAnti-Stop function runs the pump for one minute every 14 days\u003c\/strong\u003e when the boiler is switched off, preventing the pump rotor from seizing between heating seasons.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eTechnical Specification — Elterm Sergeant (AsBN), 4-14kW band\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eModel codes (4-14kW band)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e123006 (6kW) · 123009 (9kW) · 123012 (12kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003ePower outputs\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e4kW single-phase entry · 6kW · 9kW · 12kW (higher outputs to 24kW also available on this platform)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e6kW \u0026amp; 9kW: 230V single-phase or 400V 3-phase · 12kW: 400V 3-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAutomation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eBasic LED control panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eD (ErP scale spans A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eBoiler efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e99.5%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e70°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax DHW operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e65°C (with DHW package fitted)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eConnections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e¾\" external (CH flow\/return)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eBuilt-in equipment\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eExpansion vessel, circulation pump, safety valve, air vent, pressure gauge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eOptional DHW package\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eElectrovalve, cylinder sensor, activation code — requires min. 12kW coil cylinder (not supplied)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eSystem compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eSealed or open-vented (air-vented) central heating systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eStandards compliance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eLVD, RoHS, EMC, WEEE, ErP directives\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e24 months from installation date, subject to registered commissioning and boiler protection kit fitment\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eElectrical Protection by Power Output\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e4kW (1-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e1 x 20A fuse, 3 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e6kW (1-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e1 x 32A fuse, 3 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e6kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 10A fuse, 5 x 2.5mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e9kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 16A fuse, 5 x 2.5mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e12kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 20A fuse, 5 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"display: flex; background: #008377CF; border-radius: 8px 8px 0 0;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eDHW Package\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 6kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e6kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e230V or 400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eOptional (code 100003)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 9kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e230V or 400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eOptional (code 100003)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 12kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e12kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eOptional (code 100003)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 24px 0;\"\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat's the difference between this and the heat-only version?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eThis is the same Elterm Sergeant boiler platform. On its own it heats a wet central heating circuit only. Fitting the optional DHW package adds priority control of a separate hot water cylinder, turning it into a system boiler that covers both heating and hot water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eDo I need to buy a hot water cylinder separately?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. The DHW package only supplies the electrovalve, cylinder sensor and activation code; it requires a separately purchased indirect cylinder with a coil rated at a minimum of 12kW to work correctly.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat electrical supply is needed for a 9kW or 12kW model?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eThe 6kW and 9kW versions can run on either a 230V single-phase or 400V 3-phase supply. The 12kW version requires a 400V 3-phase supply. A qualified electrician should confirm fuse rating and cable size against the protection table above.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eIs this boiler suitable for a flat without gas?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes, this power band (4-14kW) is well suited to flats and smaller homes, where its compact wall-mounted design and lack of a flue make installation straightforward.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eHow often does the hot water need hygienising?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eWhere the DHW package is fitted, Elterm recommends running the hygienisation cycle every 2 to 3 weeks. This heats the DHW circuit to 70°C to help control the risk of Legionella bacteria in the stored water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"4kW - 230V 1‑phase","offer_id":62781817848157,"sku":"Elterm-4kw-1ph","price":1100.0,"currency_code":"GBP","in_stock":true},{"title":"9kW - 230V 1‑phase","offer_id":62781817880925,"sku":"Elterm-9kw-1ph","price":1150.0,"currency_code":"GBP","in_stock":true},{"title":"12kW - 230V 1‑phase","offer_id":62781817913693,"sku":"Elterm-12kw-1ph","price":1170.0,"currency_code":"GBP","in_stock":true},{"title":"14kW - 230V 1‑phase","offer_id":62781817946461,"sku":"Elterm-14kw-1ph","price":1190.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EltermElectricSystemBoiler.webp?v=1764784876"},{"product_id":"elterm-electric-heat-only-electric-boiler","title":"Elterm Electric Heat Only Electric Boiler","description":"\u003c!-- SEO Product Name: Elterm Sergeant 4-24kW Electric Heat Only Boiler | AsBN | PV Ready --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Sergeant (AsBN)\u003c\/strong\u003e is a \u003cstrong\u003eheat-only electric boiler\u003c\/strong\u003e built for wet central heating systems that have no mains gas connection, or that need a compact, flue-free heat source. It connects directly into radiator or underfloor heating circuits, working as the sole heat source in off-grid properties or as an \u003cstrong\u003ealternative, supporting, or temporary heat source\u003c\/strong\u003e alongside a gas boiler or heat pump.\u003c\/p\u003e\n\u003cp\u003eManufactured in Poland by Elterm, a heating specialist with over 30 years of production experience, the Sergeant uses \u003cstrong\u003eBasic LED automation\u003c\/strong\u003e and is available across a wide power range from \u003cstrong\u003e4kW to 24kW\u003c\/strong\u003e, with power-splitting electronics that let a single unit modulate down to serve smaller heat loads. An \u003cstrong\u003eoptional DHW package\u003c\/strong\u003e (electrovalve, cylinder sensor and activation code) can be added to give the Sergeant priority control over a separate hot water cylinder, effectively turning it into a system boiler.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e4-24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003ePower range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e99.5%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eBoiler efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003eClass D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eEnergy efficiency (A+++ to D scale)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e24 months\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e70°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003eIP-rated\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eWall-mounted, flue-free design\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #c0392b; margin-bottom: 4px;\"\u003eInstallation \u0026amp; Electrical Safety\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eElectrical and hydraulic assembly, commissioning and maintenance must be carried out by a qualified, legally authorised installer. Adequate overcurrent and residual current (RCD) protection is mandatory, sized to the fuse and cable ratings in the spec table below. Elterm's warranty does not cover damage caused by incorrect electrical or hydraulic connection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eWide Power Range\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eSix output versions from \u003cstrong\u003e6kW to 24kW\u003c\/strong\u003e, plus a 4kW single-phase entry point, so the correct size can be matched to the building's heat loss rather than over- or under-sizing the system.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003ePV Ready Functionality\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eIncludes \u003cstrong\u003e4x PV-ready features\u003c\/strong\u003e: an operation counter, adjustable maximum power lock, a voltage-free (0V) contact for external control, and a disconnectable contact that switches off a second heat source when the boiler is running — useful where solar generation is variable.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003ePower Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eLarger models (15kW, 18kW, 24kW) can be \u003cstrong\u003emanually or electronically split\u003c\/strong\u003e into lower output stages (e.g. 18kW modulates to 12\/6\/4kW), reducing running costs and allowing gentler cycling on partially loaded systems.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eSealed or Open Vented\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eWorks in \u003cstrong\u003eboth sealed and open-vented (air-vented) central heating systems\u003c\/strong\u003e, giving flexibility for retrofits into older systems as well as new sealed installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eBuilt-in Safety Systems\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eEquipped with \u003cstrong\u003equadruple overheat protection (OSC)\u003c\/strong\u003e, a switching-frequency protection system (SC), a Watch Dog processor monitor, and an \u003cstrong\u003eAnti-Stop pump function\u003c\/strong\u003e that exercises the pump for one minute every 14 days to prevent seizure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eHeat Pump Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eCan be \u003cstrong\u003ededicated to cooperate with heat pumps\u003c\/strong\u003e, acting as a backup or peak-demand top-up source, with an operation counter that can trigger a secondary heat source once a set energy threshold is reached.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eTechnical Specification — Elterm Sergeant (AsBN)\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eModel codes\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e123006 \/ 123009 \/ 123012 \/ 123015 \/ 123018 \/ 123024\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003ePower outputs\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e6kW · 9kW · 12kW · 15kW · 18kW · 24kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e6kW \u0026amp; 9kW available in 230V single-phase or 400V 3-phase; 12kW-24kW require 400V 3-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAutomation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eBasic LED control panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eD (ErP scale spans A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eBoiler efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e99.5%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e70°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eHysteresis range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e1-6°C, adjustable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003ePID heating dynamics\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e5-step adjustable, factory setting 3\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eConnections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e¾\" external (CH flow\/return)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eBuilt-in equipment\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eExpansion vessel, circulation pump, safety valve, air vent, pressure gauge (15kW-24kW models)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eOptional DHW package\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eElectrovalve, cylinder sensor, activation code (min. 12kW coil cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAnti-Stop pump protection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eRuns pump for 1 minute every 14 days when boiler is OFF\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eStandards compliance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eLVD, RoHS, EMC, WEEE, ErP directives\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e24 months from installation date, subject to registered commissioning\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eElectrical Protection by Power Output\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e4kW (1-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e1 x 20A fuse, 3 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e4kW (2-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e2 x 10A fuse, 5 x 2.5mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e6kW (1-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e1 x 32A fuse, 3 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e6kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 10A fuse, 5 x 2.5mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e9kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 16A fuse, 5 x 2.5mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e12kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 20A fuse, 5 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e15kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 25A fuse, 5 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e18kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 32A fuse, 5 x 6mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e24kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 40A fuse, 5 x 10mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"display: flex; background: #008377CF; border-radius: 8px 8px 0 0;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eModulation Steps\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 6\/4kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e6kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e230V or 400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e6 = 2+2+2kW · 4 = 2+2kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 9kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e230V or 400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e3 x 3kW stages\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 12kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e12kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e3 x 4kW stages\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 15\/9\/6\/4kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e15kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e15\/9\/6\/4kW selectable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 18\/12\/6\/4kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e18kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e18\/12\/6\/4kW selectable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 24\/12kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e24kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e24\/12kW selectable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 24px 0;\"\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eIs the Sergeant boiler suitable for a property with no gas supply?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. The Sergeant is designed as a standalone heat-only electric boiler for wet central heating systems in properties without mains gas, and it can also serve as an alternative or backup heat source alongside an existing gas boiler or heat pump.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan this boiler heat domestic hot water as well as radiators?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eNot on its own. The Sergeant is a heat-only boiler for central heating circuits. Domestic hot water can be added by fitting the optional DHW package together with a separate cylinder with a minimum 12kW coil, which lets the boiler prioritise heating the cylinder on demand.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat electrical supply does the Sergeant need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eIt depends on the power output. The 6kW and 9kW versions are available in either 230V single-phase or 400V 3-phase; the 12kW, 15kW, 18kW and 24kW versions require a 400V 3-phase supply. Always confirm the exact fuse and cable size with a qualified electrician using the protection table above.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eDoes the Sergeant work with solar PV?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. It includes 4x PV-ready functionality, including a maximum power lock that can be set to match available solar generation, and a built-in energy meter to help it cooperate with a PV installation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eCan the boiler's power output be reduced after installation?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eOn the 15kW, 18kW and 24kW models, yes — output can be manually or electronically modulated down to lower stages (for example, 18kW down to 12kW, 6kW or 4kW) via the control panel, which is useful where the building's heat loss is lower than the installed capacity.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"6kW - 230V 1‑phase","offer_id":62782018814301,"sku":"Capitan6kW","price":1030.0,"currency_code":"GBP","in_stock":true},{"title":"9kW - 230V 1‑phase","offer_id":62782018847069,"sku":"Capitan9kW","price":1070.0,"currency_code":"GBP","in_stock":true},{"title":"12kW - 230V 1‑phase","offer_id":62782018879837,"sku":"Capitan12kW","price":1125.0,"currency_code":"GBP","in_stock":true},{"title":"14kW - 230V 1‑phase","offer_id":62782018912605,"sku":"Capitan14kW","price":1170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EltermElectricIn-lineBoilerCapitanHeatOnlyElectricBoiler.png?v=1764784404"},{"product_id":"heatrae-sadia-amptec-electric-boiler-compact-high-efficiency-electric-flow-boilers","title":"Heatrae Sadia Amptec Electric Flow Boiler 4kW 6kW 9kW 11kW 12kW","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eHeatrae Sadia Amptec\u003c\/strong\u003e is a \u003cstrong\u003ecompact electric flow boiler\u003c\/strong\u003e that provides wet central heating and domestic hot water with the comfort and controllability of a gas central heating system — wherever there is a mains electricity supply but no gas. Available in \u003cstrong\u003e4kW, 6kW, 9kW, 11kW, and 12kW\u003c\/strong\u003e outputs, in both a \u003cstrong\u003eC-Series for conventional radiator systems\u003c\/strong\u003e (65–80°C flow temperature) and a \u003cstrong\u003eU-Series for underfloor heating\u003c\/strong\u003e (30–60°C), the Amptec is the established choice for off-gas-grid properties, loft conversions, extensions, apartments, and situations where fluing restrictions prevent the use of a gas boiler. The slender \u003cstrong\u003e1050 × 90 × 90mm\u003c\/strong\u003e body — the same footprint across all outputs — installs onto any internal wall in a vertical orientation via two keyhole slots, connects to existing 22mm pipework, and works with standard radiators, programmers, circulating pumps, room thermostats, and TRVs without modification. \u003cstrong\u003e99.8% efficient at point of use\u003c\/strong\u003e. Solid state technology with no moving parts, soft start electronics, zero volt switching, and front panel fault indication. \u003cstrong\u003e2-year on-site parts and labour guarantee\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ──────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Electrical \u0026amp; Plumbing Installation Required\u003c\/strong\u003e — The Amptec must be \u003cstrong\u003epermanently connected to a double-pole linked switch\u003c\/strong\u003e with minimum breaking capacity suitable for the load, wired in accordance with current IET Wiring Regulations (BS 7671). Each model requires a dedicated circuit — MCB ratings range from \u003cstrong\u003e20A (4kW) to 63A (11kW and 12kW)\u003c\/strong\u003e. Installation should be carried out by a Part P registered electrician working with a qualified heating engineer. Must be mounted \u003cstrong\u003evertically\u003c\/strong\u003e only.\n  \u003c\/div\u003e\n\n  \u003c!-- ── TEAL C vs U CALLOUT ────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ C-Series or U-Series — Which Do You Need?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eC-Series (C400 \/ C600 \/ C900 \/ C1100 \/ C1200):\u003c\/strong\u003e Flow temperature \u003cstrong\u003e65–80°C\u003c\/strong\u003e. The standard choice for conventional radiator systems, S-plan and Y-plan heating layouts with an indirect cylinder, and properties where standard panel radiators are the heat emitter. Compatible with thermostatic radiator valves and standard room thermostats.\u003cbr\u003e\u003cbr\u003e\n    \u003cstrong\u003eU-Series (U401 \/ U601 \/ U901 \/ U1101 \/ U1201):\u003c\/strong\u003e Flow temperature \u003cstrong\u003e30–60°C\u003c\/strong\u003e. Specifically designed for \u003cstrong\u003ewet underfloor heating systems\u003c\/strong\u003e, where the lower flow temperature prevents damage to floor finishes and is thermally optimised for UFH manifold delivery. Also suitable for heat pump compatible low-temperature radiators. The hardware is identical — the difference is the thermostat range.\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:85px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;\"\u003e4–12 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003e5 output sizes\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:85px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e99.8%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficient\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:85px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;\"\u003eNo flue\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eAny internal wall\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:85px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;\"\u003e90 × 90mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eFootprint\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:85px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;\"\u003e2 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOn-site guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — Flexible Installation Location\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith no combustion gases, the Amptec requires \u003cstrong\u003eno flue terminal, no flue pipe, and no external wall penetration\u003c\/strong\u003e for the boiler itself. It can be installed on any interior wall — including in a hallway, under a staircase, in a kitchen cupboard, or in a loft conversion — without reference to external wall position or proximity to windows and doors. This is the single most significant practical advantage over gas boilers for difficult or space-constrained installations, and it means there are \u003cstrong\u003eno planning constraints\u003c\/strong\u003e on boiler position in listed buildings or conservation areas where external flue terminals may be restricted or refused.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Low Watts Density Copper Elements — Long Life\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Amptec uses \u003cstrong\u003elong-life, low watts density copper heating elements in a copper heat exchanger\u003c\/strong\u003e — rather than the stainless steel or nichrome elements used in budget electric boilers. Low watts density means the heat flux at the element surface is deliberately kept low, reducing the temperature differential between the element and the water. This substantially reduces the rate of limescale deposition on the element surface in hard water areas, and lowers the thermal stress cycles on the element material — the two primary failure modes for electric heating elements. The result is measurably longer element life and more consistent performance over the product's service life.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Solid State — No Moving Parts — Soft Start\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Amptec's control electronics are \u003cstrong\u003eentirely solid state with no mechanical relays or contactors\u003c\/strong\u003e to wear or fail. Element switching uses \u003cstrong\u003ezero volt switching\u003c\/strong\u003e — the elements switch on only when the AC mains voltage is at zero, eliminating the electrical arcing and interference that causes premature failure in relay-switched electric heating and reduces electromagnetic emissions. A \u003cstrong\u003esoft start system\u003c\/strong\u003e ramps up element power gradually rather than applying full load instantaneously, preventing the voltage dip and current surge that can cause flicker on shared supply circuits and reduces stress on the element windings at switch-on.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Drop-In Replacement — 22mm Connections\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAll Amptec models connect via \u003cstrong\u003e22mm copper compression connections\u003c\/strong\u003e (flow red, return blue) — the most common primary pipework size in UK heating systems. This means the Amptec is a straightforward drop-in replacement for an existing boiler on a 22mm primary circuit, with no pipework adaptation needed at the boiler connections. The \u003cstrong\u003e1050 × 90 × 90mm body\u003c\/strong\u003e is the same physical size across all five output ratings — specifying a higher kW model for a larger property does not require additional wall space or a larger enclosure. Wall mounting via two keyhole slots from a template; a pump supply (2A fused) is included in the boiler output terminals.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Annual Safety Certificate — Minimal Maintenance\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eUnlike gas or oil boilers, the Amptec carries \u003cstrong\u003eno legal requirement for an annual safety inspection\u003c\/strong\u003e — there are no combustion products, no heat exchanger to inspect for flue gas leakage, and no CO risk. Landlords and property managers save the cost and administrative burden of annual boiler service certificates. Routine maintenance is minimal: the unit has no moving parts beyond any external pump, no ignition components, no gas valve, and no flue system to service. This makes the Amptec particularly attractive for \u003cstrong\u003erental properties and managed multi-unit buildings\u003c\/strong\u003e where compliance overhead is a significant operating cost.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Multiple Units — Relay Accessories for Load Sharing\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eTwo or more Amptec boilers can be installed in parallel to meet heating loads exceeding a single unit's capacity — for example, two 12kW units providing 24kW total for a larger property. Heatrae Sadia relay accessories coordinate operation: the \u003cstrong\u003eRL2 and RL3 relays\u003c\/strong\u003e manage multiple Amptec units to share the total load and prevent simultaneous full-power start-up. The \u003cstrong\u003eRL1 relay\u003c\/strong\u003e is used where an electric shower is installed in the same property — it prevents the shower and boiler operating simultaneously, protecting the incoming supply fuse from overload. These accessories allow the Amptec system to be scaled to properties of almost any size within single-phase supply limits.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── FULL MODEL RANGE TABLE ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFull Model Range — C-Series (Radiator) \u0026amp; U-Series (Underfloor)\u003c\/div\u003e\n  \u003cdiv style=\"overflow-x:auto;margin-bottom:22px;\"\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;min-width:620px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n        \u003cth style=\"padding:9px 10px;text-align:left;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eModel\u003c\/th\u003e\n        \u003cth style=\"padding:9px 10px;text-align:center;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eOutput\u003c\/th\u003e\n        \u003cth style=\"padding:9px 10px;text-align:center;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eTemp Range\u003c\/th\u003e\n        \u003cth style=\"padding:9px 10px;text-align:center;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eSupply (A)\u003c\/th\u003e\n        \u003cth style=\"padding:9px 10px;text-align:center;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eMCB\u003c\/th\u003e\n        \u003cth style=\"padding:9px 10px;text-align:center;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eWeight\u003c\/th\u003e\n        \u003cth style=\"padding:9px 10px;text-align:center;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eCode\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eC400\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e4 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e65–80°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e17A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e20A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e7.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:001\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eC600\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e6 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e65–80°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e25A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e32A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e7.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:002\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eC900\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e9 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e65–80°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e38A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e50A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e8.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:003\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eC1100\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e11 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e65–80°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e45A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e63A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e8.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:004\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eC1200\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e12 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e65–80°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e50A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e63A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e8.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:005\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eU401\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e4 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e30–60°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e17A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e20A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e7.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:101\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eU601\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e6 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e30–60°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e25A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e32A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e7.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:102\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eU901\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e9 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e30–60°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e38A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e50A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e8.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:103\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eU1101\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e11 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e30–60°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e45A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e63A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e8.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:104\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:8px 10px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eU1201\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e12 kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e30–60°C\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e50A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e63A\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e8.5 kg\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 10px;text-align:center;border-bottom:1px solid #c8e6e3;\"\u003e95:022:105\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── SHARED SPEC TABLE ──────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — All Models (Common)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHeatrae Sadia — \u003cstrong\u003eAmptec\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e1050 × 90 × 90 mm\u003c\/strong\u003e — identical across all output sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNominal Water Capacity\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.3 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePlumbing Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e22mm compression — flow (red) \u0026amp; return (blue)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin. Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e4kW \u0026amp; 6kW: 6 L\/min · 9kW, 11kW \u0026amp; 12kW: 12 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Operating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e3 bar (pressure tested to 15 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Systems\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSealed or open vented · S-plan · Y-plan · UFH (U-series)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eElement\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eLong life, low watts density copper in copper heat exchanger\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e99.8%\u003c\/strong\u003e (ErP D-rated — see FAQ)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eThermal Insulation\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eArmaflex closed-cell (dust, fibre \u0026amp; CFC free)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOuter Casing\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eWhite stove-enamelled corrosion-resistant steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eInner Container\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e240V ~ single phase (see model range table for amps)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSafety Features\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2A fused pump supply · Dual control circuits · Dual switching · Self-check \u0026amp; fault indication · Re-settable trips · Soft start · Zero volt switching\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eApprovals\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eBEAB · CE · CCA · BS EN ISO 9001:2000\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e2 years\u003c\/strong\u003e on-site parts \u0026amp; labour (from date of purchase)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat size Amptec do I need for my property?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eSizing should always be based on a \u003cstrong\u003eheat loss calculation to BS EN 12831\u003c\/strong\u003e, which your heating engineer can carry out. As a rough guide from Heatrae Sadia: the \u003cstrong\u003e4kW\u003c\/strong\u003e suits a small flat, mobile home or single extension; \u003cstrong\u003e6kW\u003c\/strong\u003e covers a small 1–2 bedroom flat with around 4 radiators; \u003cstrong\u003e9kW\u003c\/strong\u003e suits a 2–3 bedroom property with around 7 radiators; \u003cstrong\u003e11kW\u003c\/strong\u003e covers a larger 3–4 bedroom house; and the \u003cstrong\u003e12kW\u003c\/strong\u003e (or multiple units with RL2\/RL3 relay accessories) covers larger properties or high-insulation buildings where the heat loss demands more capacity. If the boiler will also be heating a domestic hot water cylinder, add approximately 3kW to the calculated space heating requirement to account for cylinder reheat loads.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eThe Amptec is described as 99.8% efficient but has an ErP D-rating. How can both be true?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThese two statements measure different things. The \u003cstrong\u003e99.8% efficiency figure\u003c\/strong\u003e measures the conversion of electrical energy into useful heat at the point of use — essentially all the electricity consumed by the Amptec becomes heat in the heating circuit, with only 0.2% lost as standing heat loss from the unit body. This is genuinely very high. The \u003cstrong\u003eErP D-rating\u003c\/strong\u003e is a different metric: it assesses the full life-cycle carbon and energy impact, which includes the efficiency of electricity generation at the power station. Because the current UK electricity grid is still partly generated from fossil fuels, the grid efficiency factor reduces the overall ErP score for all-electric heating products. As the grid decarbonises — increasing its share of wind, solar, nuclear and hydro — the effective carbon impact of electric heating improves. Properties already on 100% renewable electricity tariffs can reasonably treat the Amptec as a near-zero carbon heating option today.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan this boiler work with my existing radiators and controls?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Amptec is specifically designed as a \u003cstrong\u003edrop-in replacement for a gas or oil boiler\u003c\/strong\u003e on an existing wet central heating system. It works with standard panel radiators, conventional thermostatic radiator valves (TRVs), wiring centres, zone valves (S-plan or Y-plan), programmers, and room thermostats without modification. The 22mm compression connections match standard UK primary pipework. The only change from a gas installation is the electrical supply — the existing gas supply is capped off and a new electrical circuit is run to the boiler position. The Amptec also includes a \u003cstrong\u003e2A fused pump supply\u003c\/strong\u003e terminal, allowing the circulating pump to be wired and powered via the boiler rather than separately.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eCan I use the Amptec with solar PV to reduce running costs?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Amptec is fully compatible with solar PV diversion systems. A solar diverter (such as a myenergi Eddi or iBoost) monitors surplus generation and diverts excess solar electricity to the Amptec rather than exporting it to the grid at a low SEG rate. For maximum benefit, the system should be sized so that the boiler's heating loads can be partially covered by daytime solar generation — most effective for DHW cylinder heating (which can be timed to the solar generation window) and background space heating during sunny daytime periods. Pairing the Amptec with battery storage and time-of-use tariffs (Octopus Go, Agile) can further reduce the effective running cost by shifting electricity consumption to low-rate overnight periods.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eDoes the Amptec need an annual service, and can landlords use it in rental properties?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThere is \u003cstrong\u003eno legal requirement for an annual safety inspection\u003c\/strong\u003e on the Amptec — unlike gas boilers, which require annual Gas Safe certificates under the Gas Safety (Installation and Use) Regulations 1998. For landlords, this removes the statutory annual cost and the obligation to arrange access for gas safety checks. However, Heatrae Sadia recommend \u003cstrong\u003eperiodic checks\u003c\/strong\u003e by a competent person — typically every 3–5 years — covering system pressure, water quality, element condition, and control function. The unit's re-settable trips and front panel fault indication assist with diagnosis if a problem occurs. For rented properties, the boiler must still be properly commissioned and the installation certificate retained as evidence of compliant installation under Part P.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat consumer unit supply do I need, and will my existing supply cope?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Amptec requires a \u003cstrong\u003ededicated circuit\u003c\/strong\u003e from the consumer unit. Required MCB ratings are: 4kW → 20A; 6kW → 32A; 9kW → 50A; 11kW and 12kW → 63A. A 63A circuit for the 11 or 12kW models is a significant load — if your property has a 60A or 80A main incoming fuse (common in older properties), adding a 63A boiler circuit may exceed the total available supply. A Part P electrician should assess the consumer unit rating and total connected load before installation. In some cases a \u003cstrong\u003e100A supply upgrade from the DNO\u003c\/strong\u003e may be needed — this is typically free for residential properties and takes several weeks to arrange but should be factored into project timescales.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Heatrae Sadia","offers":[{"title":"4kW","offer_id":62788067066205,"sku":"95022001","price":795.0,"currency_code":"GBP","in_stock":true},{"title":"6kW","offer_id":62788067098973,"sku":"95022002","price":830.0,"currency_code":"GBP","in_stock":true},{"title":"9kW","offer_id":62788067131741,"sku":"95022003","price":1150.0,"currency_code":"GBP","in_stock":true},{"title":"11kW","offer_id":62788067164509,"sku":"95022004","price":1300.0,"currency_code":"GBP","in_stock":true},{"title":"12kW","offer_id":62788067197277,"sku":"95022005","price":1370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HeatraeSadiaAmptecelectricflowboilers.png?v=1764848684"},{"product_id":"e-c-a-arceus-ek-12-mt-electric-combi-boiler-12kw","title":"E.C.A Arceus EK 12kW Electric Combi Boiler | 8116270010 | WRAS","description":"\u003c!-- SEO Product Name: E.C.A Arceus EK 12kW Electric Combi Boiler | 8116270010 | WRAS --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222222;\"\u003e\n\u003cp style=\"margin:0 0 14px; line-height:1.6;\"\u003e\u003cstrong\u003eE.C.A Arceus EK 12 MT\u003c\/strong\u003e is a \u003cstrong\u003e12 kW wall-hung electric combi boiler\u003c\/strong\u003e that delivers \u003cstrong\u003ecentral heating and instantaneous domestic hot water\u003c\/strong\u003e from one compact unit. There is \u003cstrong\u003eno gas supply, no flue and no combustion\u003c\/strong\u003e at the property, so it suits all-electric homes, flats, new builds and off-grid or low-carbon projects (MPN 8116270010).\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px; line-height:1.6;\"\u003eThe \u003cstrong\u003eMT (monothermic) design\u003c\/strong\u003e heats hot water on demand without a cylinder or tank. \u003cstrong\u003eStaged electric heaters\u003c\/strong\u003e, a \u003cstrong\u003e38 dB\u003c\/strong\u003e sound level, \u003cstrong\u003eWRAS-approved\u003c\/strong\u003e hot water and \u003cstrong\u003eOpenTherm-compatible\u003c\/strong\u003e modulating controls make it straightforward to specify alongside solar PV, batteries and smart tariffs. \u003cstrong\u003eComfort and Eco hot water modes\u003c\/strong\u003e let the user choose between faster hot water and lower running cost.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:20px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e12 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eNominal power\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e38 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eSound power level\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003eD \/ C\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eErP heating \/ hot water\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003eIPX4D\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eProtection class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e27 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eNet weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #B3261E; background:#FDECEA; padding:14px 18px; margin:14px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#B3261E; font-size:17px; margin-bottom:6px;\"\u003eSafety and regulatory\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.55;\"\u003e\n\u003cstrong\u003eQualified installers only.\u003c\/strong\u003e Follow the E.C.A. Arceus user and installation manual and the EPH CP4 V2 manual when that thermostat is used. Isolate the supply before any electrical work and fit a \u003cstrong\u003ededicated 30 mA RCD circuit\u003c\/strong\u003e. The initial start-up must be carried out by an E.C.A. authorised service, and the warranty certificate must be approved at commissioning for the warranty to be valid. \u003cstrong\u003eNever apply mains voltage to the low voltage thermostat input.\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #B26A00; background:#FFF4E0; padding:14px 18px; margin:14px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#B26A00; font-size:17px; margin-bottom:6px;\"\u003eDo not oversize\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.55;\"\u003e\n\u003cstrong\u003e12 kW:\u003c\/strong\u003e suitable for up to \u003cstrong\u003e12 kW of radiator output plus one bathroom\u003c\/strong\u003e. A \u003cstrong\u003eheat loss check is required\u003c\/strong\u003e before specifying.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #008377CF; background:#EAF4F3; padding:14px 18px; margin:14px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eRecommended water settings\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.55;\"\u003e\n\u003cstrong\u003e2 bar maximum:\u003c\/strong\u003e fit a \u003cstrong\u003epressure reducing valve\u003c\/strong\u003e on the 15 mm cold water inlet valve and set it to 2 bar maximum. \u003cstrong\u003e6 litres\/minute maximum:\u003c\/strong\u003e with a pressure reducing valve, set the flow at the boiler's cold inlet valve; without one, fit flow restrictors at each hot water tap. Also fit a \u003cstrong\u003emagnetic filter\u003c\/strong\u003e on the heating return (any suitable brand) and a \u003cstrong\u003escale reducer\u003c\/strong\u003e on the cold inlet pipe.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:14px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eOne unit for heating and hot water\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003eInstantaneous domestic hot water\u003c\/strong\u003e on demand plus central heating from a single wall-hung boiler, with no cylinder or cold water tank.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eStaged electric heaters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eHeaters switch fully on or off in stages, so output follows demand in steps from a \u003cstrong\u003e2 kW minimum heating power\u003c\/strong\u003e up to nominal output.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eQuiet 38 dB operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003e38 dB sound power level\u003c\/strong\u003e indoors, with no combustion and no flue fan. Well suited to kitchens and utility rooms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eOpenTherm and smart control ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eSupports \u003cstrong\u003emodulating (OpenTherm) room thermostats\u003c\/strong\u003e (manufacturer states up to 20% energy saving), with inputs for an outdoor temperature sensor and programmable timer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eEco and Comfort hot water modes\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003eEC (Eco)\u003c\/strong\u003e heats water gradually when a tap opens; \u003cstrong\u003eCO (Comfort)\u003c\/strong\u003e preheats for quicker hot water. Domestic hot water adjustable from 30 to 65 °C.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eComprehensive built-in protection\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003e88 °C\u003c\/strong\u003e heating overheat cut-out, \u003cstrong\u003e71 °C\u003c\/strong\u003e hot water overheat protection, \u003cstrong\u003e3 bar safety valve\u003c\/strong\u003e, low pressure protection, frost protection, pump and valve anti-blocking, automatic air purge, 8 litre expansion vessel and an annual maintenance reminder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eInstallation essentials\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:14px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:6px; background:#EAF4F3; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:8px 14px;\"\u003e1. Thermostat wiring\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003eEPH CP4 V2 wireless:\u003c\/strong\u003e connect RF1B \u003cstrong\u003eCOM (1) + ON (4)\u003c\/strong\u003e to the boiler's volt free input on the \u003cstrong\u003eleft brown terminal block\u003c\/strong\u003e, where the link is fitted. Check the 24 V input for the fitted PCB. The receiver has its own mains power. \u003cstrong\u003eNever apply mains to the low voltage input.\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:6px; background:#EAF4F3; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:8px 14px;\"\u003e2. Comfort mode\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px; line-height:1.5;\"\u003eHold hot water \u003cstrong\u003e+\u003c\/strong\u003e and \u003cstrong\u003e−\u003c\/strong\u003e together for \u003cstrong\u003e5 seconds\u003c\/strong\u003e until \u003cstrong\u003eCO\u003c\/strong\u003e shows on the screen, then release. In Comfort mode the hot water symbol may flash with all taps closed, because the boiler is preheating.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:6px; background:#EAF4F3; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:8px 14px;\"\u003e3. Single or three phase\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px; line-height:1.5;\"\u003eFor \u003cstrong\u003esingle phase\u003c\/strong\u003e, fit the supplied \u003cstrong\u003ethree-pin busbar\u003c\/strong\u003e to the circuit breaker as shown in the boiler's wiring diagram. For \u003cstrong\u003ethree phase\u003c\/strong\u003e, do not fit the busbar. Isolate power first.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eElectrical supply requirements\u003c\/h3\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:6px; overflow:hidden; margin:14px 0; font-size:15px;\"\u003e\n\u003cdiv style=\"display:flex; background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eCable\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eBreaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eLoad\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eRotary isolator\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; font-weight:bold;\"\u003eSingle phase 230 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e10 mm² (16 mm² minimum through insulation)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e63 A (B63)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e52.2 A\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e63 A minimum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F3F8F8; padding:9px 14px; border-bottom:1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; font-weight:bold;\"\u003eThree phase 400 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e5×4 mm²\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003eB20 (3-pole)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e17.4 A\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003eElectrician to size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px; margin:6px 0 0;\"\u003e12 kW through insulation: \u003cstrong\u003e16 mm² minimum\u003c\/strong\u003e. Check cable derating, isolator poles and ratings, and the incoming supply. Fit a \u003cstrong\u003ededicated 30 mA RCD\u003c\/strong\u003e circuit. Minimum cable and breaker sizes only; the installer is responsible for the final calculation.\u003c\/p\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:6px; overflow:hidden; margin:14px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eE.C.A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eArceus EK 12 MT Electric Combi Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eMPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e8116270010\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eWall-hung electric combi, sealed system (monothermic)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eNominal power\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e12 kW (rated heat output 11.9 kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eMinimum heating power\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e678 × 410 × 288 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e27 kg net, 30 kg gross\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eProtection class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eIPX4D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eSound power level\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e38 dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e3 years, subject to commissioning by an E.C.A. authorised service\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eWater and hydraulics\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHeating connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e3\/4\" flow and return\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHot water connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e1\/2\" cold inlet and hot outlet\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eRequired fittings\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eStrainer on the hot water (1\/2\") inlet and on the heating (3\/4\") return; safety valve hose to a drain\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHeating temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e30 to 80 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHot water temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e30 to 65 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eFill pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e1.5 to 2 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eRecommended cold inlet pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e2 bar maximum (with pressure reducing valve)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eRecommended hot water flow\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e6 litres\/minute maximum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eExpansion vessel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e8 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eWater quality\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003epH 7.5 to 9.5 (below 8.5 if aluminium parts are in the system)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eEnergy and ErP\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eSpace heating energy class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eSeasonal space heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e36%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHot water load profile\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eM\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHot water energy class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eWater heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e36%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eTemperature application\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eMedium\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eSafety and controls\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eProtections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eHeating overheat 88 °C; hot water overheat 71 °C; 3 bar safety valve; low pressure 0.4 bar; low voltage 170 to 300 VAC; frost protection; pump and 3-way valve anti-blocking\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eDisplay and control\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eLCD panel with Winter, Summer and Standby modes, Eco and Comfort hot water modes, error codes and diagnostics\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eThermostat compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eOn\/off, programmable, wireless and modulating (OpenTherm) room thermostats; outdoor temperature sensor and timer inputs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eInstallation environment\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eLocation\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eIndoors only, ambient 5 to 35 °C, up to 2000 m altitude\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eClearances\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e500 mm above, 250 mm below, 150 mm each side\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eBathroom zones\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eAt least 50 cm from baths and shower cabinets\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #008377CF; background:#EAF4F3; padding:14px 18px; margin:14px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eTechnical support\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.55;\"\u003eFor technical assistance call \u003cstrong\u003e0800 640 9988\u003c\/strong\u003e (Mon to Fri, 9 am to 5 pm). Have the boiler model and supply type to hand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eCan the Arceus EK 12 MT run on a single-phase supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eYes. The 12 kW model draws \u003cstrong\u003e52.2 A\u003c\/strong\u003e on \u003cstrong\u003e230 V single phase\u003c\/strong\u003e, using \u003cstrong\u003e10 mm² cable\u003c\/strong\u003e (16 mm² minimum through insulation), a \u003cstrong\u003e63 A (B63) breaker\u003c\/strong\u003e and a 63 A minimum rotary isolator, on a dedicated 30 mA RCD circuit. Fit the supplied three-pin busbar to the circuit breaker as shown in the wiring diagram. For three phase, do not fit the busbar and isolate power first.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eDo I need a pressure reducing valve?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eE.C.A. recommends one. Fit a \u003cstrong\u003epressure reducing valve\u003c\/strong\u003e on the 15 mm cold water inlet valve and set it to \u003cstrong\u003e2 bar maximum\u003c\/strong\u003e. With it in place, set the flow at the boiler's cold inlet valve to \u003cstrong\u003e6 litres\/minute maximum\u003c\/strong\u003e. Without one, fit flow restrictors at each hot water tap.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eWhat size of property is the 12 kW model suited to?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eDo not oversize. The 12 kW boiler is intended for up to 12 kW of radiator output plus one bathroom, and a heat loss check is required. \u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eHow do I connect a room thermostat?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eFor the EPH CP4 V2 wireless thermostat, connect RF1B COM (1) and ON (4) to the boiler's volt free input on the left brown terminal block, where the link is fitted, and check the 24 V input for the fitted PCB. The receiver has separate mains power. Never apply mains to the low voltage input. Modulating (OpenTherm) thermostats are also supported.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eWhat are Eco and Comfort modes?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003e\n\u003cstrong\u003eEC (Eco)\u003c\/strong\u003e heats water gradually when a tap opens. \u003cstrong\u003eCO (Comfort)\u003c\/strong\u003e preheats the heat exchanger for quicker hot water. To switch, hold hot water + and − together for 5 seconds until the mode letters change. In Comfort mode the hot water symbol may flash with all taps closed because the boiler is preheating.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eWhich water treatment accessories should I fit?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eFit a \u003cstrong\u003emagnetic filter\u003c\/strong\u003e on the heating return (any suitable brand) and a \u003cstrong\u003escale reducer\u003c\/strong\u003e on the cold inlet pipe. Keep water pH between 7.5 and 9.5, and add an inhibitor to older systems that are prone to clogging.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"E.C.A","offers":[{"title":"Default Title","offer_id":62857693102429,"sku":"8116270010","price":1395.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ECAArceusEK12MTElectricCombiBoiler.jpg?v=1765520702"},{"product_id":"e-c-a-arceus-ek-15-mt-electric-combi-boiler-15kw","title":"E.C.A Arceus EK 15kW Electric Combi Boiler | 8116271010 | WRAS","description":"\u003c!-- SEO Product Name: E.C.A Arceus EK 15kW Electric Combi Boiler | 8116271010 | WRAS --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; font-family: Arial, Helvetica, sans-serif; color: #222222;\"\u003e\n\u003cp style=\"margin: 0 0 14px; line-height: 1.6;\"\u003e\u003cstrong\u003eE.C.A Arceus EK 15 MT\u003c\/strong\u003e is a \u003cstrong\u003e15 kW wall-hung electric combi boiler\u003c\/strong\u003e that delivers \u003cstrong\u003ecentral heating and instantaneous domestic hot water\u003c\/strong\u003e from one compact unit. There is \u003cstrong\u003eno gas supply, no flue and no combustion\u003c\/strong\u003e at the property, so it suits all-electric homes, flats, new builds and off-grid or low-carbon projects (MPN 8116271010).\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 14px; line-height: 1.6;\"\u003eThe \u003cstrong\u003eMT (monothermic) design\u003c\/strong\u003e heats hot water on demand without a cylinder or tank. \u003cstrong\u003eStaged electric heaters\u003c\/strong\u003e, a \u003cstrong\u003e38 dB\u003c\/strong\u003e sound level, \u003cstrong\u003eWRAS-approved\u003c\/strong\u003e hot water and \u003cstrong\u003eOpenTherm-compatible\u003c\/strong\u003e modulating controls make it straightforward to specify alongside solar PV, batteries and smart tariffs. \u003cstrong\u003eComfort and Eco hot water modes\u003c\/strong\u003e let the user choose between faster hot water and lower running cost.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e15 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eNominal power\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e38 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eSound power level\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eD \/ C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eErP heating \/ hot water\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eIPX4D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eProtection class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e27 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eNet weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #B3261E; background: #FDECEA; padding: 14px 18px; margin: 14px 0; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #b3261e; font-size: 17px; margin-bottom: 6px;\"\u003eSafety and regulatory\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.55;\"\u003e\n\u003cstrong\u003eQualified installers only.\u003c\/strong\u003e Follow the E.C.A. Arceus user and installation manual and the EPH CP4 V2 manual when that thermostat is used. Isolate the supply before any electrical work and fit a \u003cstrong\u003ededicated 30 mA RCD circuit\u003c\/strong\u003e. The initial start-up must be carried out by an E.C.A. authorised service, and the warranty certificate must be approved at commissioning for the warranty to be valid. \u003cstrong\u003eNever apply mains voltage to the low voltage thermostat input.\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #008377CF; background: #EAF4F3; padding: 14px 18px; margin: 14px 0; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 17px; margin-bottom: 6px;\"\u003eRecommended water settings\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.55;\"\u003e\n\u003cstrong\u003e2 bar maximum:\u003c\/strong\u003e fit a \u003cstrong\u003epressure reducing valve\u003c\/strong\u003e on the 15 mm cold water inlet valve and set it to 2 bar maximum. \u003cstrong\u003e6 litres\/minute maximum:\u003c\/strong\u003e with a pressure reducing valve, set the flow at the boiler's cold inlet valve; without one, fit flow restrictors at each hot water tap. Also fit a \u003cstrong\u003emagnetic filter\u003c\/strong\u003e on the heating return (any suitable brand) and a \u003cstrong\u003escale reducer\u003c\/strong\u003e on the cold inlet pipe.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 14px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eOne unit for heating and hot water\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003eInstantaneous domestic hot water\u003c\/strong\u003e on demand plus central heating from a single wall-hung boiler, with no cylinder or cold water tank.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eStaged electric heaters\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003eHeaters switch fully on or off in stages, so output follows demand in steps from a \u003cstrong\u003e2 kW minimum heating power\u003c\/strong\u003e up to nominal output.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eQuiet 38 dB operation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003e38 dB sound power level\u003c\/strong\u003e indoors, with no combustion and no flue fan. Well suited to kitchens and utility rooms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eOpenTherm and smart control ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003eSupports \u003cstrong\u003emodulating (OpenTherm) room thermostats\u003c\/strong\u003e (manufacturer states up to 20% energy saving), with inputs for an outdoor temperature sensor and programmable timer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eEco and Comfort hot water modes\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003eEC (Eco)\u003c\/strong\u003e heats water gradually when a tap opens; \u003cstrong\u003eCO (Comfort)\u003c\/strong\u003e preheats for quicker hot water. Domestic hot water adjustable from 30 to 65 °C.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eComprehensive built-in protection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003e88 °C\u003c\/strong\u003e heating overheat cut-out, \u003cstrong\u003e71 °C\u003c\/strong\u003e hot water overheat protection, \u003cstrong\u003e3 bar safety valve\u003c\/strong\u003e, low pressure protection, frost protection, pump and valve anti-blocking, automatic air purge, 8 litre expansion vessel and an annual maintenance reminder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eInstallation essentials\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 14px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-radius: 6px; background: #EAF4F3; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 8px 14px;\"\u003e1. Thermostat wiring\u003c\/div\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003eEPH CP4 V2 wireless:\u003c\/strong\u003e connect RF1B \u003cstrong\u003eCOM (1) + ON (4)\u003c\/strong\u003e to the boiler's volt free input on the \u003cstrong\u003eleft brown terminal block\u003c\/strong\u003e, where the link is fitted. Check the 24 V input for the fitted PCB. The receiver has its own mains power. \u003cstrong\u003eNever apply mains to the low voltage input.\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-radius: 6px; background: #EAF4F3; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 8px 14px;\"\u003e2. Comfort mode\u003c\/div\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: 15px; line-height: 1.5;\"\u003eHold hot water \u003cstrong\u003e+\u003c\/strong\u003e and \u003cstrong\u003e−\u003c\/strong\u003e together for \u003cstrong\u003e5 seconds\u003c\/strong\u003e until \u003cstrong\u003eCO\u003c\/strong\u003e shows on the screen, then release. In Comfort mode the hot water symbol may flash with all taps closed, because the boiler is preheating.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-radius: 6px; background: #EAF4F3; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 8px 14px;\"\u003e3. Single or three phase\u003c\/div\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: 15px; line-height: 1.5;\"\u003eFor \u003cstrong\u003esingle phase\u003c\/strong\u003e, fit the supplied \u003cstrong\u003ethree-pin busbar\u003c\/strong\u003e to the circuit breaker as shown in the boiler's wiring diagram. For \u003cstrong\u003ethree phase\u003c\/strong\u003e, do not fit the busbar. Isolate power first.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eElectrical supply requirements\u003c\/h3\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 6px; overflow: hidden; margin: 14px 0; font-size: 15px;\"\u003e\n\u003cdiv style=\"display: flex; background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eCable\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eBreaker\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eLoad\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eRotary isolator\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; padding: 9px 14px; border-bottom: 1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px; font-weight: bold;\"\u003eSingle phase 230 V (see supply note)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e16 mm²\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e80 A (B80)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e65.2 A\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eElectrician to size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F3F8F8; padding: 9px 14px; border-bottom: 1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px; font-weight: bold;\"\u003eThree phase 400 V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e5×6 mm²\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eB25 (3-pole)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e21.7 A\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eElectrician to size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 14px; margin: 6px 0 0;\"\u003eCheck cable derating, isolator poles and ratings, and the incoming supply. Fit a \u003cstrong\u003ededicated 30 mA RCD\u003c\/strong\u003e circuit. Minimum cable and breaker sizes only; the installer is responsible for the final calculation.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 6px; overflow: hidden; margin: 14px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eE.C.A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eArceus EK 15 MT Electric Combi Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eMPN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e8116271010\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e8682182000980\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eWall-hung electric combi, sealed system (monothermic)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eNominal power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e15 kW (rated heat output 14.9 kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eMinimum heating power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e678 × 410 × 288 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e27 kg net, 30 kg gross\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eProtection class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eIPX4D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eSound power level\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e38 dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e3 years, subject to commissioning by an E.C.A. authorised service\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eWater and hydraulics\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHeating connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e3\/4\" flow and return\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHot water connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e1\/2\" cold inlet and hot outlet\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eRequired fittings\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eStrainer on the hot water (1\/2\") inlet and on the heating (3\/4\") return; safety valve hose to a drain\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHeating temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e30 to 80 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHot water temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e30 to 65 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eFill pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e1.5 to 2 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eRecommended cold inlet pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e2 bar maximum (with pressure reducing valve)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eRecommended hot water flow\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e6 litres\/minute maximum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eExpansion vessel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e8 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eWater quality\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003epH 7.5 to 9.5 (below 8.5 if aluminium parts are in the system)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eEnergy and ErP\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eSpace heating energy class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eSeasonal space heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e37%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHot water load profile\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eL\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHot water energy class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eWater heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e37%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eTemperature application\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eMedium\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eSafety and controls\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eProtections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eHeating overheat 88 °C; hot water overheat 71 °C; 3 bar safety valve; low pressure 0.4 bar; low voltage 170 to 300 VAC; frost protection; pump and 3-way valve anti-blocking\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eDisplay and control\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eLCD panel with Winter, Summer and Standby modes, Eco and Comfort hot water modes, error codes and diagnostics\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eThermostat compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eOn\/off, programmable, wireless and modulating (OpenTherm) room thermostats; outdoor temperature sensor and timer inputs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eInstallation environment\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eLocation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eIndoors only, ambient 5 to 35 °C, up to 2000 m altitude\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eClearances\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e500 mm above, 250 mm below, 150 mm each side\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eBathroom zones\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eAt least 50 cm from baths and shower cabinets\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eCan the Arceus EK 15 MT run on a single-phase supply?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eThe E.C.A. UK lists \u003cstrong\u003e230 V single phase\u003c\/strong\u003e for the 15 kW model (16 mm² cable, B80 breaker, 65.2 A load, supplied three-pin busbar fitted to the breaker).\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eDo I need a pressure reducing valve?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eE.C.A. recommends one. Fit a \u003cstrong\u003epressure reducing valve\u003c\/strong\u003e on the 15 mm cold water inlet valve and set it to \u003cstrong\u003e2 bar maximum\u003c\/strong\u003e. With it in place, set the flow at the boiler's cold inlet valve to \u003cstrong\u003e6 litres\/minute maximum\u003c\/strong\u003e. Without one, fit flow restrictors at each hot water tap.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eWhat size of property is the 15 kW model suited to?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eDo not oversize. The 15 kW boiler is intended for up to 15 kW of radiator output plus one bathroom, and a heat loss check is required. Do not fit a 15 kW boiler in a one or two bedroom property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eHow do I connect a room thermostat?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eFor the EPH CP4 V2 wireless thermostat, connect RF1B COM (1) and ON (4) to the boiler's volt free input on the left brown terminal block, where the link is fitted, and check the 24 V input for the fitted PCB. The receiver has separate mains power. Never apply mains to the low voltage input. Modulating (OpenTherm) thermostats are also supported.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eWhat are Eco and Comfort modes?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003e\n\u003cstrong\u003eEC (Eco)\u003c\/strong\u003e heats water gradually when a tap opens. \u003cstrong\u003eCO (Comfort)\u003c\/strong\u003e preheats the heat exchanger for quicker hot water. To switch, hold hot water + and − together for 5 seconds until the mode letters change. In Comfort mode the hot water symbol may flash with all taps closed because the boiler is preheating.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eWhich water treatment accessories should I fit?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eFit a \u003cstrong\u003emagnetic filter\u003c\/strong\u003e on the heating return (any suitable brand) and a \u003cstrong\u003escale reducer\u003c\/strong\u003e on the cold inlet pipe. Keep water pH between 7.5 and 9.5, and add an inhibitor to older systems that are prone to clogging.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"E.C.A","offers":[{"title":"Default Title","offer_id":62857697067357,"sku":"8116271010","price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ECAArceusEK12MTElectricCombiBoiler.jpg?v=1765520702"},{"product_id":"e-c-a-arceus-ek-15-st-electric-system-boiler-15kw","title":"E.C.A Arceus EK 15kW Electric System Boiler | 8116285010","description":"\u003c!-- SEO Product Name: E.C.A Arceus EK 15kW Electric System Boiler | 8116285010 | 38dB --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; font-family: Arial, Helvetica, sans-serif; color: #222222;\"\u003e\n\u003cp style=\"margin: 0 0 14px; line-height: 1.6;\"\u003e\u003cstrong\u003eE.C.A Arceus EK 15 ST\u003c\/strong\u003e is a \u003cstrong\u003e15 kW wall-hung electric system boiler\u003c\/strong\u003e for sealed central heating systems with an \u003cstrong\u003eexternal indirect hot water cylinder\u003c\/strong\u003e. The \u003cstrong\u003eST (storage tank) design\u003c\/strong\u003e uses an integral \u003cstrong\u003e3-way valve\u003c\/strong\u003e to direct heat to the cylinder, with the \u003cstrong\u003ecirculation pump, 8 litre expansion vessel and 3 bar safety valve\u003c\/strong\u003e built in. There is \u003cstrong\u003eno gas supply, no flue and no combustion\u003c\/strong\u003e, so it suits all-electric homes and low-carbon projects (MPN 8116285010).\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 14px; line-height: 1.6;\"\u003e\u003cstrong\u003eStaged electric heaters\u003c\/strong\u003e, \u003cstrong\u003e38 dB\u003c\/strong\u003e quiet running and support for \u003cstrong\u003emodulating (OpenTherm) room thermostats\u003c\/strong\u003e make it a practical match for properties that want stored hot water, for example alongside solar PV with an immersion-ready cylinder, batteries and smart tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e15 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eNominal power\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e38 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eSound power level\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eD\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eErP space heating class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eIPX4D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eProtection class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e27 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eNet weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 12px 8px; text-align: center; background: #EAF4F3;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333333; margin-top: 4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #B3261E; background: #FDECEA; padding: 14px 18px; margin: 14px 0; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #b3261e; font-size: 17px; margin-bottom: 6px;\"\u003eSafety and regulatory\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.55;\"\u003e\n\u003cstrong\u003eQualified installers only.\u003c\/strong\u003e Follow the E.C.A. Arceus user and installation manual. Isolate the supply before any electrical work and fit a \u003cstrong\u003ededicated 30 mA RCD circuit\u003c\/strong\u003e. The initial start-up must be carried out by an E.C.A. authorised service, and the warranty certificate must be approved at commissioning for the warranty to be valid.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #B26A00; background: #FFF4E0; padding: 14px 18px; margin: 14px 0; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #b26a00; font-size: 17px; margin-bottom: 6px;\"\u003eHot water needs a cylinder\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.55;\"\u003eThis is a system boiler: it does \u003cstrong\u003enot\u003c\/strong\u003e produce instantaneous hot water. Connect an \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e to the cylinder flow and return connections (1\/2\"). Unvented cylinders must be installed by a G3-qualified installer. Size the boiler from a \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 14px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eCylinder-ready system boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003eHeating plus control of an \u003cstrong\u003eexternal indirect cylinder\u003c\/strong\u003e through an internal \u003cstrong\u003e3-way valve\u003c\/strong\u003e, for households that prefer stored hot water.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eStaged electric heaters\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003eHeaters switch fully on or off in stages, so output follows demand in steps from a \u003cstrong\u003e2 kW minimum heating power\u003c\/strong\u003e up to nominal output.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eSystem components built in\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003eCirculation pump\u003c\/strong\u003e, \u003cstrong\u003e8 litre expansion vessel\u003c\/strong\u003e, \u003cstrong\u003e3 bar safety valve\u003c\/strong\u003e, automatic air purge and drain valve are all integrated.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eQuiet 38 dB operation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003e38 dB sound power level\u003c\/strong\u003e indoors, with no combustion and no flue fan.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eOpenTherm and smart control ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003eSupports \u003cstrong\u003emodulating (OpenTherm) room thermostats\u003c\/strong\u003e (manufacturer states up to 20% energy saving), with inputs for an outdoor temperature sensor and programmable timer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-top: 5px solid #008377CF; border-radius: 6px; padding: 14px; background: #FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 16px; margin-bottom: 6px;\"\u003eComprehensive built-in protection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003e88 °C\u003c\/strong\u003e heating overheat cut-out, \u003cstrong\u003elow pressure protection (0.4 bar)\u003c\/strong\u003e, \u003cstrong\u003efrost protection\u003c\/strong\u003e, pump and valve anti-blocking and an annual maintenance reminder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eInstallation essentials\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 14px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-radius: 6px; background: #EAF4F3; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 8px 14px;\"\u003e1. Cylinder connection\u003c\/div\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: 15px; line-height: 1.5;\"\u003eCylinder flow and return use \u003cstrong\u003e1\/2\" connections\u003c\/strong\u003e, with a separate \u003cstrong\u003e1\/2\" filling line\u003c\/strong\u003e. Heating flow and return use 3\/4\" connections.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-radius: 6px; background: #EAF4F3; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 8px 14px;\"\u003e2. Single or three phase\u003c\/div\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: 15px; line-height: 1.5;\"\u003eFor \u003cstrong\u003esingle phase\u003c\/strong\u003e, fit the supplied \u003cstrong\u003ethree-pin busbar\u003c\/strong\u003e to the circuit breaker as shown in the boiler's wiring diagram. For \u003cstrong\u003ethree phase\u003c\/strong\u003e, do not fit the busbar. Isolate power first.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; border: 1px solid #008377CF; border-radius: 6px; background: #EAF4F3; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 8px 14px;\"\u003e3. Water quality\u003c\/div\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: 15px; line-height: 1.5;\"\u003eFill to \u003cstrong\u003e1.5 to 2 bar\u003c\/strong\u003e and keep pH between \u003cstrong\u003e7.5 and 9.5\u003c\/strong\u003e. Fit a strainer on the heating return and add an inhibitor to older systems that are prone to clogging.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eElectrical supply requirements\u003c\/h3\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 6px; overflow: hidden; margin: 14px 0; font-size: 15px;\"\u003e\n\u003cdiv style=\"display: flex; background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eCable\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eBreaker\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eLoad\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eRotary isolator\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; padding: 9px 14px; border-bottom: 1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px; font-weight: bold;\"\u003eSingle phase 230 V (see supply note)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e16 mm²\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e80 A (B80)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e65.2 A\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eElectrician to size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F3F8F8; padding: 9px 14px; border-bottom: 1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px; font-weight: bold;\"\u003eThree phase 400 V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e5×6 mm²\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eB25 (3-pole)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003e21.7 A\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0; padding: 0 6px;\"\u003eElectrician to size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 14px; margin: 6px 0 0;\"\u003eCheck cable derating, isolator poles and ratings, and the incoming supply. Fit a \u003cstrong\u003ededicated 30 mA RCD\u003c\/strong\u003e circuit. Minimum cable and breaker sizes only; the installer is responsible for the final calculation.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 6px; overflow: hidden; margin: 14px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eE.C.A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eArceus EK 15 ST Electric System Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eMPN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e8116285010\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eWall-hung electric system boiler, sealed system, for an external indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eNominal power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e15 kW (rated heat output 14.9 kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eMinimum heating power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e678 × 410 × 288 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e27 kg net, 30 kg gross\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eProtection class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eIPX4D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eSound power level\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e38 dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e3 years, subject to commissioning by an E.C.A. authorised service\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eWater and hydraulics\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHeating connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e3\/4\" flow and return\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eCylinder connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e1\/2\" flow and return\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eFilling line\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e1\/2\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eHeating temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e30 to 80 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eFill pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e1.5 to 2 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eIntegrated components\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eCirculation pump, 3-way valve, 8 litre expansion vessel, 3 bar safety valve, automatic air purge, drain valve\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eWater quality\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003epH 7.5 to 9.5 (below 8.5 if aluminium parts are in the system)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eEnergy and ErP\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eSpace heating energy class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eSeasonal space heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e37%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eTemperature application\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eMedium\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eSafety and controls\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eProtections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eHeating overheat 88 °C; 3 bar safety valve; low pressure 0.4 bar; low voltage 170 to 300 VAC; frost protection; pump and 3-way valve anti-blocking\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eDisplay and control\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eLCD panel with Winter, Summer and Standby modes, error codes and diagnostics, annual maintenance reminder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eThermostat compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eOn\/off, programmable, wireless and modulating (OpenTherm) room thermostats; outdoor temperature sensor and timer inputs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 9px 14px;\"\u003eInstallation environment\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eLocation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eIndoors only, ambient 5 to 35 °C, up to 2000 m altitude\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #F3F8F8; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eClearances\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003e500 mm above, 250 mm below, 150 mm each side\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; background: #FFFFFF; padding: 8px 14px; border-bottom: 1px solid #DDE9E8; font-size: 15px;\"\u003e\n\u003cdiv style=\"flex: 0 0 38%; min-width: 160px; font-weight: bold; color: #1b1b1b;\"\u003eBathroom zones\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 200px;\"\u003eAt least 50 cm from baths and shower cabinets\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #008377CF; background: #EAF4F3; padding: 14px 18px; margin: 14px 0; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 17px; margin-bottom: 6px;\"\u003eTechnical support\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.55;\"\u003eFor technical assistance call \u003cstrong\u003e0800 640 9988\u003c\/strong\u003e (Mon to Fri, 9 am to 5 pm). Have the boiler model and supply type to hand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 20px; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px; margin: 30px 0 14px; font-weight: bold;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eDoes the Arceus system boiler make hot water on its own?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eNo. The ST model is a system boiler. It provides central heating and controls an \u003cstrong\u003eexternal indirect hot water cylinder\u003c\/strong\u003e through its internal 3-way valve. For instantaneous hot water, choose the MT electric combi version.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eWhat cylinder do I need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eAn \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e connected to the 1\/2\" cylinder flow and return, sized for the household. Unvented cylinders must be installed by a G3-qualified installer.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eCan the 15 kW system boiler run on a single-phase supply?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eThe E.C.A. UK lists \u003cstrong\u003e230 V single phase\u003c\/strong\u003e for 15 kW Arceus models (16 mm² cable, B80 breaker, 65.2 A load, supplied three-pin busbar fitted to the breaker).\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eAre the pump and expansion vessel included?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eYes. The boiler has an integrated \u003cstrong\u003ecirculation pump\u003c\/strong\u003e, \u003cstrong\u003e8 litre expansion vessel\u003c\/strong\u003e, \u003cstrong\u003e3 bar safety valve\u003c\/strong\u003e, automatic air purge and drain valve. Check that the system volume suits the vessel and add more expansion capacity if needed.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eWhich room thermostats can I use?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003eThe boiler accepts on\/off, programmable, wireless and modulating (\u003cstrong\u003eOpenTherm\u003c\/strong\u003e) room thermostats, plus an outdoor temperature sensor and a programmable timer. Follow the wiring diagram in the manual, and never apply mains voltage to a low voltage thermostat input.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #008377CF; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 16px; font-weight: bold; cursor: pointer;\"\u003eHow is the boiler protected against frost and scale?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; line-height: 1.55;\"\u003e\n\u003cstrong\u003eFrost protection\u003c\/strong\u003e starts when the system water drops below 6 °C and continues until it reaches 15 °C, provided power is on, radiator valves are open and pressure is correct. It protects the boiler, not the pipework. Keep pH between 7.5 and 9.5 and add an inhibitor to older systems.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"E.C.A","offers":[{"title":"Default Title","offer_id":62857758540125,"sku":"8116285010","price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/e.c.a-arceus-electric-boiler.jpg?v=1765521911"},{"product_id":"e-c-a-arceus-ek-12-st-electric-system-boiler-12kw","title":"E.C.A Arceus EK 12kW Electric System Boiler | 8116284010","description":"\u003c!-- SEO Product Name: E.C.A Arceus EK 12kW Electric System Boiler | 8116284010 | 38dB --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222222;\"\u003e\n\u003cp style=\"margin:0 0 14px; line-height:1.6;\"\u003e\u003cstrong\u003eE.C.A Arceus EK 12 ST\u003c\/strong\u003e is a \u003cstrong\u003e12 kW wall-hung electric system boiler\u003c\/strong\u003e for sealed central heating systems with an \u003cstrong\u003eexternal indirect hot water cylinder\u003c\/strong\u003e. The \u003cstrong\u003eST (storage tank) design\u003c\/strong\u003e uses an integral \u003cstrong\u003e3-way valve\u003c\/strong\u003e to direct heat to the cylinder, with the \u003cstrong\u003ecirculation pump, 8 litre expansion vessel and 3 bar safety valve\u003c\/strong\u003e built in. There is \u003cstrong\u003eno gas supply, no flue and no combustion\u003c\/strong\u003e, so it suits all-electric homes and low-carbon projects (MPN 8116284010).\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px; line-height:1.6;\"\u003e\u003cstrong\u003eStaged electric heaters\u003c\/strong\u003e, \u003cstrong\u003e38 dB\u003c\/strong\u003e quiet running and support for \u003cstrong\u003emodulating (OpenTherm) room thermostats\u003c\/strong\u003e make it a practical match for properties that want stored hot water, for example alongside solar PV with an immersion-ready cylinder, batteries and smart tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:20px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e12 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eNominal power\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e38 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eSound power level\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003eD\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eErP space heating class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003eIPX4D\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eProtection class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e27 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eNet weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center; background:#EAF4F3;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333333; margin-top:4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #B3261E; background:#FDECEA; padding:14px 18px; margin:14px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#B3261E; font-size:17px; margin-bottom:6px;\"\u003eSafety and regulatory\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.55;\"\u003e\n\u003cstrong\u003eQualified installers only.\u003c\/strong\u003e Follow the E.C.A. Arceus user and installation manual. Isolate the supply before any electrical work and fit a \u003cstrong\u003ededicated 30 mA RCD circuit\u003c\/strong\u003e. The initial start-up must be carried out by an E.C.A. authorised service, and the warranty certificate must be approved at commissioning for the warranty to be valid.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #B26A00; background:#FFF4E0; padding:14px 18px; margin:14px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#B26A00; font-size:17px; margin-bottom:6px;\"\u003eHot water needs a cylinder\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.55;\"\u003eThis is a system boiler: it does \u003cstrong\u003enot\u003c\/strong\u003e produce instantaneous hot water. Connect an \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e to the cylinder flow and return connections (1\/2\"). Unvented cylinders must be installed by a G3-qualified installer. Size the boiler from a \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:14px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eCylinder-ready system boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eHeating plus control of an \u003cstrong\u003eexternal indirect cylinder\u003c\/strong\u003e through an internal \u003cstrong\u003e3-way valve\u003c\/strong\u003e, for households that prefer stored hot water.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eStaged electric heaters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eHeaters switch fully on or off in stages, so output follows demand in steps from a \u003cstrong\u003e2 kW minimum heating power\u003c\/strong\u003e up to nominal output.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eSystem components built in\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003eCirculation pump\u003c\/strong\u003e, \u003cstrong\u003e8 litre expansion vessel\u003c\/strong\u003e, \u003cstrong\u003e3 bar safety valve\u003c\/strong\u003e, automatic air purge and drain valve are all integrated.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eQuiet 38 dB operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003e38 dB sound power level\u003c\/strong\u003e indoors, with no combustion and no flue fan.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eOpenTherm and smart control ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eSupports \u003cstrong\u003emodulating (OpenTherm) room thermostats\u003c\/strong\u003e (manufacturer states up to 20% energy saving), with inputs for an outdoor temperature sensor and programmable timer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:6px; padding:14px; background:#FFFFFF;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:16px; margin-bottom:6px;\"\u003eComprehensive built-in protection\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong\u003e88 °C\u003c\/strong\u003e heating overheat cut-out, \u003cstrong\u003elow pressure protection (0.4 bar)\u003c\/strong\u003e, \u003cstrong\u003efrost protection\u003c\/strong\u003e, pump and valve anti-blocking and an annual maintenance reminder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eInstallation essentials\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:14px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:6px; background:#EAF4F3; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:8px 14px;\"\u003e1. Cylinder connection\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px; line-height:1.5;\"\u003eCylinder flow and return use \u003cstrong\u003e1\/2\" connections\u003c\/strong\u003e, with a separate \u003cstrong\u003e1\/2\" filling line\u003c\/strong\u003e. Heating flow and return use 3\/4\" connections.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:6px; background:#EAF4F3; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:8px 14px;\"\u003e2. Single or three phase\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px; line-height:1.5;\"\u003eFor \u003cstrong\u003esingle phase\u003c\/strong\u003e, fit the supplied \u003cstrong\u003ethree-pin busbar\u003c\/strong\u003e to the circuit breaker as shown in the boiler's wiring diagram. For \u003cstrong\u003ethree phase\u003c\/strong\u003e, do not fit the busbar. Isolate power first.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:6px; background:#EAF4F3; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:8px 14px;\"\u003e3. Water quality\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px; line-height:1.5;\"\u003eFill to \u003cstrong\u003e1.5 to 2 bar\u003c\/strong\u003e and keep pH between \u003cstrong\u003e7.5 and 9.5\u003c\/strong\u003e. Fit a strainer on the heating return and add an inhibitor to older systems that are prone to clogging.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eElectrical supply requirements\u003c\/h3\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:6px; overflow:hidden; margin:14px 0; font-size:15px;\"\u003e\n\u003cdiv style=\"display:flex; background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eCable\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eBreaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eLoad\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px;\"\u003eRotary isolator\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; font-weight:bold;\"\u003eSingle phase 230 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e10 mm² (16 mm² minimum through insulation)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e63 A (B63)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e52.2 A\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e63 A minimum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F3F8F8; padding:9px 14px; border-bottom:1px solid #DDE9E8;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; font-weight:bold;\"\u003eThree phase 400 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e5×4 mm²\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003eB20 (3-pole)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003e17.4 A\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:0 6px; \"\u003eElectrician to size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px; margin:6px 0 0;\"\u003e12 kW through insulation: \u003cstrong\u003e16 mm² minimum\u003c\/strong\u003e. Check cable derating, isolator poles and ratings, and the incoming supply. Fit a \u003cstrong\u003ededicated 30 mA RCD\u003c\/strong\u003e circuit. Minimum cable and breaker sizes only; the installer is responsible for the final calculation.\u003c\/p\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:6px; overflow:hidden; margin:14px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eE.C.A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eArceus EK 12 ST Electric System Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eMPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e8116284010\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e8682182001116\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eWall-hung electric system boiler, sealed system, for an external indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eNominal power\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e12 kW (rated heat output 11.9 kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eMinimum heating power\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e678 × 410 × 288 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e27 kg net, 30 kg gross\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eProtection class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eIPX4D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eSound power level\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e38 dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e3 years, subject to commissioning by an E.C.A. authorised service\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eWater and hydraulics\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHeating connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e3\/4\" flow and return\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eCylinder connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e1\/2\" flow and return\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eFilling line\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e1\/2\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eHeating temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e30 to 80 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eFill pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e1.5 to 2 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eIntegrated components\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eCirculation pump, 3-way valve, 8 litre expansion vessel, 3 bar safety valve, automatic air purge, drain valve\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eWater quality\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003epH 7.5 to 9.5 (below 8.5 if aluminium parts are in the system)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eEnergy and ErP\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eSpace heating energy class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eSeasonal space heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e36%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eTemperature application\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eMedium\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eSafety and controls\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eProtections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eHeating overheat 88 °C; 3 bar safety valve; low pressure 0.4 bar; low voltage 170 to 300 VAC; frost protection; pump and 3-way valve anti-blocking\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eDisplay and control\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eLCD panel with Winter, Summer and Standby modes, error codes and diagnostics, annual maintenance reminder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eThermostat compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eOn\/off, programmable, wireless and modulating (OpenTherm) room thermostats; outdoor temperature sensor and timer inputs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:9px 14px;\"\u003eInstallation environment\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eLocation\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eIndoors only, ambient 5 to 35 °C, up to 2000 m altitude\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#F3F8F8; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eClearances\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003e500 mm above, 250 mm below, 150 mm each side\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#FFFFFF; padding:8px 14px; border-bottom:1px solid #DDE9E8; font-size:15px;\"\u003e\n\u003cdiv style=\"flex:0 0 38%; min-width:160px; font-weight:bold; color:#1B1B1B;\"\u003eBathroom zones\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 200px;\"\u003eAt least 50 cm from baths and shower cabinets\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #008377CF; background:#EAF4F3; padding:14px 18px; margin:14px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eTechnical support\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.55;\"\u003eFor technical assistance call \u003cstrong\u003e0800 640 9988\u003c\/strong\u003e (Mon to Fri, 9 am to 5 pm). Have the boiler model and supply type to hand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; color:#008377CF; border-bottom:3px solid #008377CF; padding-bottom:6px; margin:30px 0 14px; font-weight:bold;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eDoes the Arceus system boiler make hot water on its own?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eNo. The ST model is a system boiler. It provides central heating and controls an \u003cstrong\u003eexternal indirect hot water cylinder\u003c\/strong\u003e through its internal 3-way valve. For instantaneous hot water, choose the MT electric combi version.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eWhat cylinder do I need?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eAn \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e connected to the 1\/2\" cylinder flow and return, sized for the household. Unvented cylinders must be installed by a G3-qualified installer.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eCan the 12 kW system boiler run on a single-phase supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eYes. The 12 kW model draws \u003cstrong\u003e52.2 A\u003c\/strong\u003e on \u003cstrong\u003e230 V single phase\u003c\/strong\u003e, using \u003cstrong\u003e10 mm² cable\u003c\/strong\u003e (16 mm² minimum through insulation), a \u003cstrong\u003e63 A (B63) breaker\u003c\/strong\u003e and a 63 A minimum rotary isolator, on a dedicated 30 mA RCD circuit. Fit the supplied three-pin busbar to the circuit breaker as shown in the wiring diagram. For three phase, do not fit the busbar and isolate power first.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eAre the pump and expansion vessel included?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eYes. The boiler has an integrated \u003cstrong\u003ecirculation pump\u003c\/strong\u003e, \u003cstrong\u003e8 litre expansion vessel\u003c\/strong\u003e, \u003cstrong\u003e3 bar safety valve\u003c\/strong\u003e, automatic air purge and drain valve. Check that the system volume suits the vessel and add more expansion capacity if needed.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eWhich room thermostats can I use?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003eThe boiler accepts on\/off, programmable, wireless and modulating (\u003cstrong\u003eOpenTherm\u003c\/strong\u003e) room thermostats, plus an outdoor temperature sensor and a programmable timer. Follow the wiring diagram in the manual, and never apply mains voltage to a low voltage thermostat input.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:bold; cursor:pointer;\"\u003eHow is the boiler protected against frost and scale?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.55;\"\u003e\n\u003cstrong\u003eFrost protection\u003c\/strong\u003e starts when the system water drops below 6 °C and continues until it reaches 15 °C, provided power is on, radiator valves are open and pressure is correct. It protects the boiler, not the pipework. Keep pH between 7.5 and 9.5 and add an inhibitor to older systems.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"E.C.A","offers":[{"title":"Default Title","offer_id":62857775972701,"sku":"8116284010","price":1370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/e.c.a-arceus-electric-boiler.jpg?v=1765521911"},{"product_id":"ehs-primus-12000s-12kw-electric-system-boiler","title":"EHS Primus 12kW Single-Phase Electric System Boiler | ALS1-1PSY-12 | 5-Yr Warranty","description":"\u003c!-- SEO Product Name: EHS Primus 12kW Single-Phase Electric System Boiler | ALS1-1PSY-12 | 5-Yr Warranty --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; color: #222; line-height: 1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eEHS Primus 12000S\u003c\/strong\u003e is a \u003cstrong\u003e12kW single-phase electric system boiler\u003c\/strong\u003e built as a straightforward, no-flue replacement for a gas system boiler. It connects into an existing wet central heating or underfloor heating circuit — same radiators, same pipework — and heats the home using nothing but a standard electricity supply.\u003c\/p\u003e\n\u003cp\u003eBecause there's \u003cstrong\u003eno combustion, no gas connection, and no flue\u003c\/strong\u003e, the Primus 12000S removes carbon monoxide risk entirely and can be sited almost anywhere in the property. Paired with a separate unvented indirect cylinder, it also delivers \u003cstrong\u003emains-pressure domestic hot water\u003c\/strong\u003e, with the option to heat the cylinder on a cheaper off-peak tariff to cut running costs.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e12 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eNominal output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e230V\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eSingle-phase supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e5 Yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e0\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eFlue or gas connection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e630×380×230mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eH × W × D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003ePump + Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eBuilt in\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border-left: 4px solid #008377CF; border-radius: 6px; padding: 16px 18px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eHow it fits your system\u003c\/div\u003e\n\u003cdiv style=\"color: #222;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003eThe \u003cstrong\u003ePrimus 12000S\u003c\/strong\u003e connects directly to existing radiator or underfloor heating flow-and-return pipework in place of a gas system boiler — no need to resize radiators or re-pipe the property.\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eFor domestic hot water, it must be paired with a separate \u003cstrong\u003eunvented indirect cylinder\u003c\/strong\u003e (not included). Adding an external timer or smart thermostat lets the cylinder be heated on off-peak or night-rate electricity for lower running costs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003e12kW single-phase output\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eSized for small to medium homes running a wet central heating or underfloor heating system on a standard single-phase electricity supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eIntegrated pump \u0026amp; expansion vessel\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eThe circulating pump and expansion vessel are built into the boiler casing, reducing the parts list and labour time on install.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003ePre-wired chassis\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eInternal wiring is done at the factory, cutting down on-site electrical work for the installer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eNo flue or gas supply\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eRemoves combustion risk entirely — no carbon monoxide exposure, no flue routing constraints, and flexible siting anywhere in the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eTouch-screen control panel\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eFront-mounted touchscreen gives clear, direct control over temperature and operating mode at the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eCompatible with off-peak tariffs\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eWorks with external RF or Wi-Fi programmable thermostats, enabling cylinder heating on cheaper night-rate electricity.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eBoiler Details\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003ePrimus (EHS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eElectric Heating Systems Ltd (EHS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003ePrimus 12000S Electric System Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eSKU \/ Part Code\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\u003cstrong\u003eALS1-1PSY-12\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eProduct Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eElectric system boiler — wet central heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eNominal Output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\n\u003cstrong\u003e12 kW\u003c\/strong\u003e, single-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eElectrical \u0026amp; Installation\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e230V AC, single-phase, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHeating Application\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eRadiator and underfloor heating via a sealed primary circuit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHot Water\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eRequires a separate unvented indirect cylinder (not included)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eIntegrated Components\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eCirculating pump and expansion vessel, factory-fitted in the casing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eControls\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eFront-mounted touch-screen panel; compatible with external RF \/ Wi-Fi thermostats\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eFlue Requirement\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eNone — no flue or gas connection needed\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eDimensions \u0026amp; Support\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e630 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e380 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e230 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eServicing\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eNo mandatory annual service requirement (see EHS warranty terms)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e, subject to manufacturer's T\u0026amp;Cs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 30px;\"\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 17px; color: #008377cf; margin-bottom: 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eDo I need to change my radiators or pipework to fit this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eNo. The Primus 12000S is designed as a direct replacement for a gas system boiler and connects to the existing flow and return pipework, so your current radiators or underfloor heating loops can stay exactly as they are.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eDoes the EHS Primus 12000S provide hot water on its own?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eIt provides central heating on its own, but domestic hot water requires a separate \u003cstrong\u003eunvented indirect cylinder\u003c\/strong\u003e, which is not included with the boiler. Once fitted, the boiler heats the cylinder to deliver mains-pressure hot water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eCan I run this boiler on a cheaper night-rate electricity tariff?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eYes. The boiler's controls are compatible with external RF or Wi-Fi programmable thermostats and timers, so the cylinder can be scheduled to heat during off-peak or night-rate periods to reduce running costs.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eIs a flue or gas supply needed for installation?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eNo. As a fully electric system boiler, the Primus 12000S needs no flue and no gas connection, which removes carbon monoxide risk and gives much more flexibility over where it can be sited in the property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eWhat warranty does the EHS Primus 12000S carry?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eIt carries a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e, subject to EHS's standard terms and conditions. There's no mandatory annual service requirement, which keeps ongoing maintenance costs low compared with a combustion boiler.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eIs the 12kW output enough for my property?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003e12kW single-phase output is generally suited to small to medium homes on a wet central heating or underfloor heating system. For larger or higher-demand properties, the equivalent 14kW Primus system boiler may be a better match — a heat loss calculation is the reliable way to confirm sizing before ordering.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":62994144297309,"sku":"ALS1-1PSY-12","price":1330.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHSPrimusElectricSystemBoiler.webp?v=1767108933"},{"product_id":"ehs-primus-14000s-14kw-electric-system-boiler","title":"EHS Primus 14kW Range-rated Single-Phase Electric System Boiler | 5-Yr Warranty","description":"\u003c!-- SEO Product Name: EHS Primus Flex 14kW Electric System Boiler | ALC1-1PSY-14F --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; font-family:Arial,Helvetica,sans-serif; color:#222;\"\u003e\n\u003cp style=\"margin:0 0 14px 0; line-height:1.65; color:#222;\"\u003eThe \u003cstrong style=\"color:#008377CF;\"\u003eEHS Primus 14000S Flex\u003c\/strong\u003e is a \u003cstrong style=\"color:#008377CF;\"\u003e14kW range-rated single-phase electric system boiler\u003c\/strong\u003e built as a direct, no-flue replacement for a gas system boiler. It connects to your \u003cstrong style=\"color:#008377CF;\"\u003eexisting radiators or underfloor heating\u003c\/strong\u003e using the same pipework, powered by a \u003cstrong style=\"color:#008377CF;\"\u003estandard 230V electricity supply\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px 0; line-height:1.65; color:#222;\"\u003eUnlike a fixed-output boiler, the Flex lets a qualified installer \u003cstrong style=\"color:#008377CF;\"\u003estep the maximum heating output down from 14kW to 11.7, 9.3, 7, 4.6 or 2.3kW\u003c\/strong\u003e to match the property's calculated heat loss. One boiler therefore suits a wide range of homes, with \u003cstrong style=\"color:#008377CF;\"\u003eless cycling\u003c\/strong\u003e and a supply that can be sized to what the house really needs. With \u003cstrong style=\"color:#008377CF;\"\u003eno combustion, no gas connection and no flue\u003c\/strong\u003e, there is \u003cstrong style=\"color:#008377CF;\"\u003ezero carbon monoxide risk\u003c\/strong\u003e and the unit can be sited with far more freedom.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px 0; line-height:1.65; color:#222;\"\u003eFor hot water, pair it with a separate \u003cstrong style=\"color:#008377CF;\"\u003evented or unvented indirect cylinder\u003c\/strong\u003e (not included). Heating the cylinder on an \u003cstrong style=\"color:#008377CF;\"\u003eoff-peak or night-rate tariff\u003c\/strong\u003e keeps running costs down, and the boiler is \u003cstrong style=\"color:#008377CF;\"\u003eideal alongside solar PV\u003c\/strong\u003e when used with a cylinder.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:22px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; border:2px solid #008377CF; border-radius:10px; padding:14px 8px; text-align:center; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-size:24px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e2.3–14kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:4px;\"\u003eRange-rated output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; border:2px solid #008377CF; border-radius:10px; padding:14px 8px; text-align:center; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-size:24px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e230V\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:4px;\"\u003eSingle-phase supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; border:2px solid #008377CF; border-radius:10px; padding:14px 8px; text-align:center; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-size:24px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e5 Yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; border:2px solid #008377CF; border-radius:10px; padding:14px 8px; text-align:center; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-size:24px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e0\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:4px;\"\u003eFlue or gas connection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; border:2px solid #008377CF; border-radius:10px; padding:14px 8px; text-align:center; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-size:24px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e30–80°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:4px;\"\u003eRadiator flow range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; border:2px solid #008377CF; border-radius:10px; padding:14px 8px; text-align:center; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-size:24px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e5L\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:4px;\"\u003eBuilt-in expansion vessel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:16px 0; padding:14px 18px; background:#E6F3F2; border-left:6px solid #008377CF; border-radius:6px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eWhat range-rated means\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222;\"\u003eThe boiler ships with a maximum heating output of 14kW. A \u003cstrong style=\"color:#008377CF;\"\u003equalified electrical installer\u003c\/strong\u003e can reduce that ceiling in six steps (2.3, 4.6, 7, 9.3, 11.7 or 14kW) using the manufacturer's installer support, so the boiler, cable and breaker can be matched to the heat loss calculation and the incoming supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:16px 0; padding:14px 18px; background:#FDECEA; border-left:6px solid #C62828; border-radius:6px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#C62828; margin-bottom:6px;\"\u003eSafety and installation\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222;\"\u003eInstallation must be carried out by a qualified heating engineer and a qualified electrician in line with BS 7671, Building Regulations and Water Fittings Regulations. \u003cstrong\u003eNever connect the boiler to mains power while it is dry\u003c\/strong\u003e – it must be filled and pressure tested first. The thermostat connection is \u003cstrong\u003ezero volt only\u003c\/strong\u003e: any live supply to it will damage the main circuit board and void the warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:16px 0; padding:14px 18px; background:#FFF6E5; border-left:6px solid #E08A00; border-radius:6px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#E08A00; margin-bottom:6px;\"\u003eRequired for the warranty\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222;\"\u003eAn \u003cstrong style=\"color:#008377CF;\"\u003eautomatic bypass valve\u003c\/strong\u003e, an \u003cstrong style=\"color:#008377CF;\"\u003einline magnetic filter on the return\u003c\/strong\u003e and a \u003cstrong style=\"color:#008377CF;\"\u003ecentral heating inhibitor\u003c\/strong\u003e are mandatory, along with full-bore isolation valves and a WRAS-approved filling loop. Annual servicing by a qualified engineer and warranty registration within 30 days of installation are also required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:30px 0 14px 0; padding:0 0 8px 0; font-size:22px; line-height:1.3; color:#008377CF; border-bottom:3px solid #008377CF;\"\u003eHow it fits your system\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 14px 0; line-height:1.65; color:#222;\"\u003eThe Primus 14000S Flex replaces a gas system boiler on the \u003cstrong style=\"color:#008377CF;\"\u003eflow and return of an existing wet heating circuit\u003c\/strong\u003e (G3\/4\" male connections), so radiator and pipework changes are normally unnecessary. The \u003cstrong style=\"color:#008377CF;\"\u003e5 litre expansion vessel, ERP pump, pressure gauge, 3 bar pressure relief valve and automatic air vent\u003c\/strong\u003e are already inside the casing.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px 0; line-height:1.65; color:#222;\"\u003eControl it with an \u003cstrong style=\"color:#008377CF;\"\u003eexternal RF or Wi-Fi programmable thermostat\u003c\/strong\u003e via the zero-volt connection. Underfloor heating is supported through the boiler's \u003cstrong style=\"color:#008377CF;\"\u003elow-temperature UFH mode (30–60°C)\u003c\/strong\u003e, while radiator mode runs from \u003cstrong style=\"color:#008377CF;\"\u003e30–80°C\u003c\/strong\u003e. Frost protection runs automatically as long as the boiler stays powered.\u003c\/p\u003e\n\u003ch3 style=\"margin:30px 0 14px 0; padding:0 0 8px 0; font-size:22px; line-height:1.3; color:#008377CF; border-bottom:3px solid #008377CF;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:0 0 10px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 250px; min-width:250px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:8px; padding:16px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#008377CF; margin-bottom:8px;\"\u003eRange-rated heating output\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222; font-size:15px;\"\u003eSet the maximum output to \u003cstrong style=\"color:#008377CF;\"\u003e2.3, 4.6, 7, 9.3, 11.7 or 14kW\u003c\/strong\u003e to match the home's heat loss and the available supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; min-width:250px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:8px; padding:16px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#008377CF; margin-bottom:8px;\"\u003eIntegrated pump \u0026amp; vessel\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222; font-size:15px;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eERP pump\u003c\/strong\u003e and \u003cstrong style=\"color:#008377CF;\"\u003e5 litre expansion vessel\u003c\/strong\u003e are factory-fitted, cutting parts and install time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; min-width:250px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:8px; padding:16px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#008377CF; margin-bottom:8px;\"\u003ePre-wired and compact\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222; font-size:15px;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003ePre-wired\u003c\/strong\u003e with a \u003cstrong style=\"color:#008377CF;\"\u003e650mm supply cable\u003c\/strong\u003e already connected inside the boiler, so there is no need to open the cover for the mains connection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; min-width:250px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:8px; padding:16px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#008377CF; margin-bottom:8px;\"\u003eNo flue, no gas\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222; font-size:15px;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eZero carbon monoxide risk\u003c\/strong\u003e, no flue routing and no gas supply, giving \u003cstrong style=\"color:#008377CF;\"\u003eflexible siting\u003c\/strong\u003e around the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; min-width:250px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:8px; padding:16px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#008377CF; margin-bottom:8px;\"\u003eVented or unvented cylinders\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222; font-size:15px;\"\u003eWorks with \u003cstrong style=\"color:#008377CF;\"\u003evented and unvented indirect cylinders\u003c\/strong\u003e, with \u003cstrong style=\"color:#008377CF;\"\u003eoff-peak tariff\u003c\/strong\u003e heating and \u003cstrong style=\"color:#008377CF;\"\u003esolar PV\u003c\/strong\u003e integration via the cylinder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; min-width:250px; border:1px solid #008377CF; border-top:5px solid #008377CF; border-radius:8px; padding:16px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#008377CF; margin-bottom:8px;\"\u003eBuilt-in protection\u003c\/div\u003e\n\u003cdiv style=\"line-height:1.6; color:#222; font-size:15px;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eFrost protection\u003c\/strong\u003e, \u003cstrong style=\"color:#008377CF;\"\u003eflow switch and thermal cut-out\u003c\/strong\u003e, a \u003cstrong style=\"color:#008377CF;\"\u003echild lock\u003c\/strong\u003e and a front control panel with \u003cstrong style=\"color:#008377CF;\"\u003e24-hour timer\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:30px 0 14px 0; padding:0 0 8px 0; font-size:22px; line-height:1.3; color:#008377CF; border-bottom:3px solid #008377CF;\"\u003eRange-rating options\u003c\/h3\u003e\n\u003cdiv style=\"margin:0 0 18px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#008377CF; color:#ffffff; font-weight:700; padding:10px 12px;\"\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px;\"\u003eOutput step\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px;\"\u003eUH setting\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px;\"\u003eCurrent (A)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px;\"\u003eMin. MCB\/RCBO (A)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px;\"\u003eMin. cable (mm²)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 12px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; font-weight:700; color:#008377CF;\"\u003e2.3kW\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e01\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e10.4\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e32\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e2.5\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 12px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; font-weight:700; color:#008377CF;\"\u003e4.6kW\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e02\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e20.9\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e32\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 12px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; font-weight:700; color:#008377CF;\"\u003e7kW\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e03\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e31\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e32\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e6\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 12px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; font-weight:700; color:#008377CF;\"\u003e9.3kW\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e04\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e42\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e50\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e10\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 12px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; font-weight:700; color:#008377CF;\"\u003e11.7kW\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e05\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e52.2\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e63\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e10\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 12px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; font-weight:700; color:#008377CF;\"\u003e14kW (default)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e06\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e62.6\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e63\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px; padding:2px 6px; color:#222;\"\u003e10\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin:0 0 14px 0; line-height:1.65; color:#222;\"\u003eAlways confirm the actual draw with a clamp meter after setup, and carry out a voltage and load test before choosing cable and breaker. An upgrade to the property's main fuse may be required at the higher output steps.\u003c\/p\u003e\n\u003ch3 style=\"margin:30px 0 14px 0; padding:0 0 8px 0; font-size:22px; line-height:1.3; color:#008377CF; border-bottom:3px solid #008377CF;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"margin:0 0 18px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 16px;\"\u003eBoiler details\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eEHS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eElectric Heating Systems Ltd\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003ePrimus 14000S Flex Electric System Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003ePart code\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eALC1-1PSY-14F\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eType\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eRange-rated electric system boiler – heating only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eHeating output\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e2.3 to 14kW in six steps (maximum 14kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eIP rating\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eIPX1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eColour\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eWhite\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 18px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 16px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e230V AC, 50Hz, single-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eCurrent at 14kW\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e62.6A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eMinimum breaker \/ cable (14kW)\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e63A MCB\/RCBO, 10mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eSupply cable\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e650mm H05 cable supplied and pre-connected\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eThermostat connection\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eZero-volt (volt-free) only; 230V 3A auxiliary supply available inside the boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eProtection\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eSurge protection to BS 7671 regulation 443 and an external RCD recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 18px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 16px;\"\u003eWater and heating\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eFlow \u0026amp; return connections\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eG3\/4\" male thread\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003ePressure relief valve\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e3 bar, with 15mm copper discharge connection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eSystem pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eFill cold to 1–1.5 bar; operating water pressure 1–3 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eFlow temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eRadiator mode 30–80°C; underfloor heating mode 30–60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eExpansion vessel\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e5 litre, built in\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003ePump\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eERP circulation pump with adjustable speed (set for a 15–20°C flow\/return differential)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eHot water\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eSeparate vented or unvented indirect cylinder required (not included)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 18px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 16px;\"\u003eDimensions and weight\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eHeight × width × depth\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e585 × 380 × 235mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e26kg net, 29kg gross – two people needed to lift\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eClearance\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eMinimum 100mm around the boiler; fit upright using all six fixing points\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eSiting\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eNot suitable for installation in a bathroom or shower compartment\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 18px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 16px;\"\u003eWarranty and servicing\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#EAF4F3; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003e5 years: 2 years parts and labour plus 3 years parts only, when registered within 30 days of installation (otherwise 1 year)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:10px 16px; border-top:1px solid #d5e6e4;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#222;\"\u003eServicing\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 320px; color:#222; line-height:1.5;\"\u003eAnnual service by a qualified engineer is part of the warranty conditions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:30px 0 14px 0; padding:0 0 8px 0; font-size:22px; line-height:1.3; color:#008377CF; border-bottom:3px solid #008377CF;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer;\"\u003eWhat does range-rated mean on the Primus 14000S Flex?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.65; color:#222; background:#ffffff;\"\u003eThe boiler is supplied with a \u003cstrong style=\"color:#008377CF;\"\u003emaximum heating output of 14kW\u003c\/strong\u003e, which a qualified electrical installer can lower in steps of 2.3, 4.6, 7, 9.3, 11.7 or 14kW to match the property's heat loss. This reduces cycling and lets the cable, breaker and supply be sized to the real demand.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer;\"\u003eWhat electrical supply does it need?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.65; color:#222; background:#ffffff;\"\u003eA \u003cstrong style=\"color:#008377CF;\"\u003e230V single-phase supply\u003c\/strong\u003e. At the full 14kW the boiler draws 62.6A and needs a minimum \u003cstrong style=\"color:#008377CF;\"\u003e63A breaker and 10mm² cable\u003c\/strong\u003e. Lower range-rated steps need less, from a 32A breaker at 7kW or below. A voltage and load test is recommended, and the main fuse may need upgrading.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer;\"\u003eDoes it provide hot water on its own?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.65; color:#222; background:#ffffff;\"\u003eNo. It is a heating-only system boiler, so you need a separate \u003cstrong style=\"color:#008377CF;\"\u003evented or unvented indirect cylinder\u003c\/strong\u003e for hot water. An unvented cylinder gives mains-pressure hot water for multi-bathroom homes, and heating it on an off-peak tariff can reduce running costs.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer;\"\u003eWill it work with my radiators and underfloor heating?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.65; color:#222; background:#ffffff;\"\u003eYes. It connects to existing flow and return pipework in place of a gas system boiler. Radiator mode supports flow temperatures of \u003cstrong style=\"color:#008377CF;\"\u003e30–80°C\u003c\/strong\u003e and underfloor heating mode \u003cstrong style=\"color:#008377CF;\"\u003e30–60°C\u003c\/strong\u003e. A heat loss calculation should confirm the right output before you order.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer;\"\u003eWhat else is needed to install it?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.65; color:#222; background:#ffffff;\"\u003eThe manufacturer requires an \u003cstrong style=\"color:#008377CF;\"\u003eautomatic bypass valve\u003c\/strong\u003e, \u003cstrong style=\"color:#008377CF;\"\u003efull-bore isolation valves\u003c\/strong\u003e, an \u003cstrong style=\"color:#008377CF;\"\u003einline magnetic filter on the return\u003c\/strong\u003e, a \u003cstrong style=\"color:#008377CF;\"\u003eWRAS-approved filling loop\u003c\/strong\u003e, a drain point and a \u003cstrong style=\"color:#008377CF;\"\u003ecentral heating inhibitor\u003c\/strong\u003e. The system must be flushed to BS 7593 before filling, and additional air vents or an external expansion vessel may be needed on larger systems.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer;\"\u003eWhat warranty does it have and is servicing required?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; line-height:1.65; color:#222; background:#ffffff;\"\u003eIt carries a \u003cstrong style=\"color:#008377CF;\"\u003e5-year manufacturer's warranty\u003c\/strong\u003e (2 years parts and labour, then 3 years parts only) provided the boiler is registered with EHS within 30 days of installation. \u003cstrong style=\"color:#008377CF;\"\u003eAnnual servicing\u003c\/strong\u003e by a qualified engineer is part of the warranty conditions, and the boiler must be installed and commissioned strictly to the installation manual.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":62994755289437,"sku":"ALC1‑1PSY‑14F","price":1170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHSPrimusElectricSystemBoiler.webp?v=1767108933"},{"product_id":"ehs-combi-boiler-primus-14000c-flex-with-installer-kit","title":"EHS Primus 14000C Flex 14kW Electric Combi Boiler with Installer Kit — Range-Rated Single Phase No Flue Solar PV UFH — ALC1-1PCO-14F","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eEHS Primus 14000C Flex\u003c\/strong\u003e is a \u003cstrong\u003e14kW single-phase electric combi boiler\u003c\/strong\u003e with a range-rated output — the heating and hot water power levels can be adjusted at installation to match the exact heat loss and hot water requirements of the property, without needing to select a different boiler model. It provides \u003cstrong\u003econtinuous hot water at up to 7 litres per minute\u003c\/strong\u003e and \u003cstrong\u003ecentral heating via existing radiators or underfloor heating\u003c\/strong\u003e, with no flue, no gas connection, and no requirement for an annual Gas Safe safety inspection. The \u003cstrong\u003e\"with installer kit\"\u003c\/strong\u003e bundle includes all the plumbing components needed for a compliant installation — Sentinel magnetic filter, system cleaner and inhibitor, EPH Combi Pack 4 thermostat, WRAS filling loop, automatic bypass valve, isolation valves, and a Caleffi 5 L\/min flow restrictor — along with a \u003cstrong\u003e2-year extended warranty\u003c\/strong\u003e on top of the standard 5-year manufacturer's guarantee. Suitable for small flats, properties off the gas grid, and homes where pipework modifications are to be minimised.\n  \u003c\/p\u003e\n\n  \u003c!-- ── WHAT'S IN THE BOX callout ─────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:12px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ Installer Kit Contents — All Included\u003c\/strong\u003e\n    \u003cul style=\"margin:10px 0 0;padding-left:20px;line-height:2.1;font-size:15px;\"\u003e\n      \u003cli\u003e\u003cstrong\u003eEHS Primus 14000C Flex 14kW Electric Combi Boiler\u003c\/strong\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003cstrong\u003eSentinel Vortex 250 Magnetic Filter\u003c\/strong\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003cstrong\u003eSentinel X300 System Cleaner\u003c\/strong\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003cstrong\u003eSentinel X100 System Inhibitor\u003c\/strong\u003e\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eEPH Combi Pack 4\u003c\/strong\u003e — wireless RF programmable thermostat \u0026amp; receiver (OpenTherm, Boiler Plus compliant)\u003c\/li\u003e\n      \u003cli\u003e\u003cstrong\u003eWRAS Approved Filling Loop\u003c\/strong\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003cstrong\u003eAutomatic Bypass Valve\u003c\/strong\u003e\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e4× Isolation Valves\u003c\/strong\u003e — 2× ½\" and 2× ¾\"\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCaleffi Flow Valve\u003c\/strong\u003e — 5 L\/min flow restrictor for DHW\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp style=\"margin:10px 0 0;font-size:14px;\"\u003e\u003cstrong\u003ePurchasing with the installer kit adds a 2-year extended warranty\u003c\/strong\u003e on top of the standard 5-year EHS manufacturer's guarantee — 7 years total coverage when the kit is purchased and the boiler is registered.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003equalified heating engineer and a Part P registered electrician\u003c\/strong\u003e, in accordance with the EHS installation manual, BS 7671, Building Regulations, and Water Supply (Water Fittings) Regulations 1999. \u003cstrong\u003eAn automatic bypass valve must be fitted\u003c\/strong\u003e — failure to do so can cause F6 error codes or boiler shutdown. Requires a \u003cstrong\u003e63A circuit breaker and 10mm² cable\u003c\/strong\u003e. Mains water pressure must be confirmed; if above 6 bar, a pressure reducing valve is required. An external RCD near the boiler is recommended.\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;\"\u003e14 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSingle phase 230V\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;\"\u003e7 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eHot water flow\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;\"\u003eNo flue\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSite anywhere\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;\"\u003e~100%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficient\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;\"\u003e5+2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty with kit\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES ───────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Range-Rated Flex — One Boiler, Any Property\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Primus Flex's defining feature: both \u003cstrong\u003eheating and hot water power outputs are adjustable at installation\u003c\/strong\u003e from 2kW up to the model maximum. The installer sets the boiler output to match the heat loss calculation, rather than selecting a fixed-output model that may be over- or under-sized. For the DHW circuit, EHS recommend not reducing below 12kW if the property has a shower, to ensure adequate temperature rise at the required flow rate. This range-rated approach means a single boiler suits a wide variety of flat and small home types.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — No Gas — No Annual Certificate\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThere are \u003cstrong\u003eno combustion gases, no flue penetration, and no requirement for a Gas Safe annual safety certificate\u003c\/strong\u003e. The boiler can be installed in any interior room — kitchen, hallway, cupboard — without the constraint of a flue route to an external wall. For leasehold flats where gas boiler flue positions are restricted, and for properties in listed buildings or conservation areas, this removes a frequently insurmountable installation barrier. There is no risk of carbon monoxide emission.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Continuous Hot Water — 6.5–7 L\/min\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAt full 14kW output, the boiler raises incoming cold water temperature by 30°C at \u003cstrong\u003e6.5 litres per minute\u003c\/strong\u003e — sufficient for a standard shower (39°C is a typical shower temperature). The included Caleffi 5 L\/min flow restrictor limits the mains flow to ensure the heat exchanger delivers adequate temperature regardless of incoming mains pressure variation. EHS specify this as a shower-capable boiler for single-bathroom properties; for baths or multi-bathroom homes, a system boiler with a cylinder is recommended.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ COOLFIT Overheat Protection\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003eCOOLFIT\u003c\/strong\u003e is EHS's active overheat protection system. Rather than relying solely on a passive thermal cut-out, COOLFIT monitors operating temperatures and manages the boiler's power delivery to prevent overheating events before they trigger a safety shutdown. Combined with the standard high-temperature sensor and thermal reset switch within the Flex boiler, this provides layered protection that prolongs component life and reduces nuisance fault conditions.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Touch Screen — Built-in Timer — Whisper Quiet\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003ecolour touch screen display\u003c\/strong\u003e provides intuitive access to operating mode selection (heating \/ hot water \/ both), temperature settings, timer programming, frost protection, and pump purge functions without requiring any external controller for basic operation. A \u003cstrong\u003ebuilt-in 24-hour timer\u003c\/strong\u003e allows heating periods to be set directly on the boiler. Near-silent operation — with minimal moving parts (pump and a 3 bar safety valve) — makes it suitable for installation adjacent to living areas and bedrooms in flats.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Solar PV \u0026amp; Economy Tariff Compatible\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Primus Flex can be \u003cstrong\u003eintegrated with solar PV systems\u003c\/strong\u003e to absorb surplus generated electricity for heating — reducing grid import during generation periods. The built-in timer makes it straightforward to schedule heating to run during cheap-rate periods (Economy 7, Octopus Go, Agile), and the range-rated output allows the boiler to run at a lower output level during self-consumption windows. Compatible with underfloor heating systems at the lower flow temperatures the UFH requires.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Installer Kit — All Components, Extended Warranty\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe bundled installer kit provides every major plumbing component required for a compliant installation: \u003cstrong\u003eSentinel magnetic filter, cleaner and inhibitor\u003c\/strong\u003e (system treatment per BS 7593); \u003cstrong\u003eEPH Combi Pack 4\u003c\/strong\u003e (Boiler Plus compliant wireless thermostat with OpenTherm); \u003cstrong\u003eWRAS filling loop\u003c\/strong\u003e; \u003cstrong\u003eautomatic bypass valve\u003c\/strong\u003e (mandatory per EHS specification); \u003cstrong\u003eisolation valves\u003c\/strong\u003e; and \u003cstrong\u003eCaleffi 5 L\/min flow restrictor\u003c\/strong\u003e. Purchasing the boiler with the installer kit extends the standard 5-year warranty by a further 2 years — to 7 years total — when the boiler is registered on the EHS website.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Direct Replacement for Gas Combi — No Pipework Changes\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Primus Flex connects to existing ¾\" heating flow\/return and ½\" cold\/hot water pipework — \u003cstrong\u003ethe same connection sizes as most domestic gas combi boilers\u003c\/strong\u003e. Existing radiators and pipework do not need to be replaced or modified. The only substantive work is the electrical supply upgrade (63A dedicated circuit) and the removal of the old gas boiler and flue. This makes the Primus Flex one of the most straightforward electric conversions available for flats currently served by a small gas combi.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ Model\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eEHS Electric Heating Systems — \u003cstrong\u003ePrimus 14000C Flex\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePart No.\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eALC1-1PCO-14F\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric combi (heating + on-demand DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e14 kW\u003c\/strong\u003e (range-rated from 2kW upward)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase 230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLoad Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e61A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCircuit Breaker Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e63A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e10mm²\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eUp to 7 L\/min (6.5 L\/min at 30°C rise); restrict to 5–6 L\/min for shower\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C – 80°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Mains Water Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6 bar (fit PRV if approaching limit)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Mains Water Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.8 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.5 bar (3 bar safety blow-off valve fitted)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eInternal Expansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegral Components\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eERP pump, expansion vessel, 3-bar blow-off valve, paddle flow switch\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" BSP male thread (flow and return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e½\" BSP male thread (cold inlet and hot water outlet)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eColour touch screen with built-in 24-hour timer\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eIPX1 (indoor use only — not suitable for bathrooms or shower enclosures)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eUp to 30kg (two-person lift required)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer Warranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e (register at ehs-heating.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eExtended Warranty (with kit)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e+ 2 years\u003c\/strong\u003e = 7 years total when purchased with the installer kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs 14kW enough to heat my property?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThis depends entirely on the heat loss of the property — the size, insulation standard, and number of radiators. EHS recommend completing a heat loss calculation (to BS EN 12831) before ordering. As a rough guide, a well-insulated one or two-bedroom flat up to approximately 70m² is typically suitable for a 14kW electric combi. Because the Flex is range-rated, the installer can set the heating output lower than 14kW if the heat loss calculation indicates this — the boiler will then modulate between 2kW and the set maximum, which can improve efficiency on mild days. EHS offer assistance with heat loss calculations — contact info@ehs-heating.com.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhy is a 5 or 6 L\/min flow restrictor needed for the shower?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe heat exchanger in a 14kW electric combi can only add a fixed amount of heat per litre of water that passes through it. At 14kW and 6.5 litres per minute, the temperature rise is approximately 30°C — so if cold water enters at 10°C, hot water leaves at 40°C, which is comfortable for a shower. If mains pressure is high and the flow rate increases to 8 or 9 L\/min without restriction, the same 14kW heats each litre by less — water might only reach 30°C, which is not comfortable for bathing. The Caleffi 5 L\/min flow restrictor in the installer kit caps the flow at a rate the boiler can always satisfy regardless of mains pressure, ensuring consistently hot water every time the shower is run.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhy is the automatic bypass valve mandatory?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eWhen thermostatic radiator valves (TRVs) close down as rooms reach temperature, the heating circuit becomes increasingly restricted. Without a bypass, the circulation pump forces water against a closed head — pressure rises sharply and flow drops. The EHS Flex boiler has a paddle flow switch that detects inadequate flow and triggers an F6 error code or shuts the boiler down to protect the heat exchanger. The \u003cstrong\u003eautomatic bypass valve\u003c\/strong\u003e prevents this by opening progressively as pressure rises, maintaining minimum flow through the boiler circuit regardless of how many TRVs are closed. This is why EHS specify it as mandatory, not optional. The bypass valve is included in the installer kit.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":63227551449437,"sku":"ALC1-1PCO-14F-KIT","price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHSPrimusElectricSystemBoiler.webp?v=1767108933"},{"product_id":"biasi-pro-electric-14kw-combi-boiler-single-phase","title":"Biasi Pro-Electric 14kW Single Phase Electric Combi Boiler","description":"\u003c!-- SEO Product Name: Biasi 14kW Single Phase Electric Combi Boiler | BIPROELEC14C --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 14kW Single Phase Electric Combi Boiler (BIPROELEC14C)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted electric combi\u003c\/strong\u003e that supplies both central heating and instantaneous hot water from one compact unit, with \u003cstrong\u003eno flue, no gas supply and no condensate drain\u003c\/strong\u003e. Because it uses the same \u003cstrong\u003e¾\" heating and ½\" hot water connection sizes\u003c\/strong\u003e as a conventional combi, it is a direct replacement that reuses your existing pipework and radiators.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003ePower \u003cstrong\u003emodulates from 2kW up to the full 14kW\u003c\/strong\u003e so output follows demand, and hot water flow of \u003cstrong\u003eup to 7 litres per minute\u003c\/strong\u003e on the 14kW model. It has an \u003cstrong\u003eintegrated pump and 5-litre expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e with a 24-period timer, and a dedicated \u003cstrong\u003efloor heating mode\u003c\/strong\u003e that limits flow temperature to 60°C for underfloor heating circuits.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e14kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eMax Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e2-14kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003ePower Modulation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e7 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eHot Water Flow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e61A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e80A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #008377cf; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eFittings Pack Sold Separately\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThe Biasi Combi Fittings Pack (\u003cstrong\u003eEi1124503\u003c\/strong\u003e) is \u003cstrong\u003enot included\u003c\/strong\u003e with this boiler. It is available as an optional item so you can add it only when you need it.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #e0942a; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis model draws \u003cstrong\u003e61A\u003c\/strong\u003e at full load on a 230V single phase supply and Biasi recommend a \u003cstrong\u003e80A\u003c\/strong\u003e breaker with \u003cstrong\u003e10mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #e0942a; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eBest Suited to One Bathroom\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eBiasi's suitability chart rates the 14kW for \u003cstrong\u003eradiators, taps and showers\u003c\/strong\u003e but \u003cstrong\u003enot recommended for baths\u003c\/strong\u003e. For larger homes with multiple bathrooms, Biasi recommend the three-phase combi or a system boiler with a cylinder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eNo Flue, Fit Anywhere\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eWith \u003cstrong\u003eno combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so the boiler can be sited wherever the electrical supply can reach.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eDirect Gas Combi Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eThe \u003cstrong\u003esame ¾\" and ½\" connections\u003c\/strong\u003e as a gas combi mean it fits existing pipework and radiators with minimal disruption.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003e2-14kW Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eOutput \u003cstrong\u003esteps down to 2kW\u003c\/strong\u003e to match demand, close to \u003cstrong\u003e100% efficient\u003c\/strong\u003e because all electrical input becomes heat.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eUnderfloor Heating Mode\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eSwitch between \u003cstrong\u003eradiator mode (30-80°C)\u003c\/strong\u003e and \u003cstrong\u003efloor heating mode (30-60°C)\u003c\/strong\u003e from the touchscreen.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eTouchscreen with 24-Period Timer\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eIncludes \u003cstrong\u003ewinter and summer mode, child lock, anti-freeze\u003c\/strong\u003e and a room thermostat input for wired controls.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA \u003cstrong\u003e5-litre expansion vessel\u003c\/strong\u003e, pressure gauge and safety valve are pre-fitted, and the boiler is supplied \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 18px; font-weight: bold; color: #008377cf; margin: 28px 0 12px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003ePro-Electric 14kW Combi, BIPROELEC14C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWall-mounted electric combi (heating and hot water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eEi1124503 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eSingle phase 230V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e61A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e80A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e10mm² minimum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eMax Output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e14kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003ePower Modulation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e2kW to 14kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eHot Water Flow\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eUp to 7 litres\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eHeating Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e30-80°C radiator mode, 30-60°C floor heating mode\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eHot Water Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e½\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FDECEC; border-left: 4px solid #D32F2F; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #d32f2f; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 18px; font-weight: bold; color: #008377cf; margin: 28px 0 12px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi Combi Fittings Pack (Ei1124503)\u003c\/strong\u003e is sold separately as an optional item. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eIs the 14kW single phase suitable for my property?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eBiasi's datasheet positions single phase combis as \u003cstrong\u003eideal for smaller properties such as flats and apartments\u003c\/strong\u003e. It suits \u003cstrong\u003eone bathroom\u003c\/strong\u003e; for multiple bathrooms Biasi recommend the three-phase combi or a system boiler with a cylinder.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does it need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eIt draws \u003cstrong\u003e61A\u003c\/strong\u003e at full load and needs a \u003cstrong\u003e10mm² cable and an 80A breaker\u003c\/strong\u003e. Many properties will need a supply and consumer unit check first, and a Part P certificate must be issued.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eCan I use it with underfloor heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eYes. Select \u003cstrong\u003efloor heating mode\u003c\/strong\u003e on the touchscreen to limit the heating flow temperature to \u003cstrong\u003e60°C\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eCan it be used with solar PV or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eYes. The \u003cstrong\u003e24-period timer\u003c\/strong\u003e lets you schedule heating and hot water to run when generation or cheap-rate electricity is available.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63239531954525,"sku":"BIPROELEC14C","price":1095.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-electric-combi-boiler-25kw-3-phase-with-combi-fittings-pack","title":"Biasi Pro-Electric 25kW 3-Phase Electric Combi Boiler","description":"\u003c!-- SEO Product Name: Biasi 25kW 3 Phase Electric Combi Boiler | BIPROELEC25C --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 25kW Three Phase Electric Combi Boiler (BIPROELEC25C)\u003c\/strong\u003e is the highest-output combi in the Pro-Electric range: a \u003cstrong\u003ewall-mounted, flueless electric combi\u003c\/strong\u003e for larger homes with higher hot water demand. It runs from a \u003cstrong\u003e400V three-phase supply drawing 36A\u003c\/strong\u003e and is a direct replacement for a gas combi, using the \u003cstrong\u003esame pipework and radiators\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eBiasi's suitability chart rates the 25kW combi for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e, and the listing quotes \u003cstrong\u003e12 litres per minute\u003c\/strong\u003e of hot water. Power \u003cstrong\u003emodulates from 2kW to 25kW\u003c\/strong\u003e, and it has an \u003cstrong\u003eintegrated pump and 6-litre expansion vessel\u003c\/strong\u003e with a touchscreen control panel.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e25kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eMax Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e2-25kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003ePower Modulation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e12 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eHot Water Flow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e36A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e40A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 30%; min-width: 130px; box-sizing: border-box; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #008377cf; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eFittings Pack Sold Separately\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThe Biasi Combi Fittings Pack (\u003cstrong\u003eEi1124503\u003c\/strong\u003e) is \u003cstrong\u003eoptional and not included\u003c\/strong\u003e with this boiler. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FDECEC; border-left: 4px solid #D32F2F; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #d32f2f; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eThree Phase Supply Required\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis boiler needs a \u003cstrong\u003e400V three-phase (3N~) supply\u003c\/strong\u003e and is \u003cstrong\u003enot compatible with standard single-phase domestic wiring\u003c\/strong\u003e. Confirm a three-phase supply is available before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #e0942a; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis model draws \u003cstrong\u003e36A\u003c\/strong\u003e at full load on a 400V three-phase supply and Biasi recommend a \u003cstrong\u003e40A\u003c\/strong\u003e breaker with \u003cstrong\u003e3 x 6mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eThree Phase, Lower Current\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eSpreading the load across three phases keeps the draw to \u003cstrong\u003e36A\u003c\/strong\u003e, with a \u003cstrong\u003e40A breaker and 3 x 6mm² cable\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eMulti-Outlet Hot Water\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eRated by Biasi for \u003cstrong\u003etaps, showers and baths\u003c\/strong\u003e, with \u003cstrong\u003e12 L\/min\u003c\/strong\u003e quoted on the listing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003e2-25kW Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eOutput \u003cstrong\u003emodulates from 2kW to 25kW\u003c\/strong\u003e, close to \u003cstrong\u003e100% efficient\u003c\/strong\u003e with no combustion losses.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eNo Flue, Fit Anywhere\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003e\n\u003cstrong\u003eNo flue, no gas and no condensate drain\u003c\/strong\u003e, so it can be sited wherever the supply reaches.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eDirect Gas Combi Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eThe \u003cstrong\u003esame ¾\" heating and ½\" hot water connections\u003c\/strong\u003e as a gas combi reuse existing pipework.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F4FAF9; border: 1px solid #BFE0DC; border-top: 4px solid #008377CF; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eIntegrated Pump and 6L Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA \u003cstrong\u003e6-litre expansion vessel\u003c\/strong\u003e, circulating pump and touchscreen controls are factory-fitted.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 18px; font-weight: bold; color: #008377cf; margin: 28px 0 12px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003ePro-Electric 25kW Combi, BIPROELEC25C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWall-mounted electric combi (heating and hot water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eEi1124503 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eThree phase 400V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e36A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e40A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3 x 6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eMax Output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e25kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003ePower Modulation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e2kW to 25kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eHot Water Flow\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eUp to 12 litres\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eHot Water Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e½\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #E6F4F3; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #008377cf;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FDECEC; border-left: 4px solid #D32F2F; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #d32f2f; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 18px; font-weight: bold; color: #008377cf; margin: 28px 0 12px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi Combi Fittings Pack (Ei1124503)\u003c\/strong\u003e is optional and sold separately.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eWhy does it need a three-phase supply?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eAt 25kW the boiler is wired for \u003cstrong\u003e400V three-phase\u003c\/strong\u003e, which keeps the current to \u003cstrong\u003e36A\u003c\/strong\u003e rather than the very high draw a single-phase unit of this output would need.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eCan it fill a bath?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eBiasi's suitability chart rates the 25kW combi for \u003cstrong\u003ebaths\u003c\/strong\u003e as well as taps, showers and radiators, unlike the single-phase 12kW and 14kW combis.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eWhat breaker and cable do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eBiasi recommend a \u003cstrong\u003e40A breaker\u003c\/strong\u003e and \u003cstrong\u003e3 x 6mm² cable\u003c\/strong\u003e, and a voltage and load test calculation is required before installation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #008377CF; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #ffffff; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #008377CF;\"\u003e\u003cspan\u003eIs a filling loop required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; background: #ffffff;\"\u003eSources conflict on this point, so \u003cstrong\u003econfirm with Biasi or your system designer\u003c\/strong\u003e how the system should be filled and pressurised.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63239666499933,"sku":"BIPROELEC25C","price":1230.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-pro-electric-system-boiler-6kw-single-phase","title":"Biasi Pro Electric System Boiler 6kW Single Phase","description":"\u003c!-- SEO Product Name: Biasi 6kW Single Phase Electric System Boiler | BIPROELEC6S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 6kW Single Phase Electric System Boiler (BIPROELEC6S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 6kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e26A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e32A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e26A\u003c\/strong\u003e at full load on a 230V single phase supply and Biasi recommend a \u003cstrong\u003e32A\u003c\/strong\u003e breaker with \u003cstrong\u003e6mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 6kW System Boiler, BIPROELEC6S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle phase 230V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e26A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 6kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e26A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e32A breaker\u003c\/strong\u003e with \u003cstrong\u003e6mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63239726104925,"sku":"BIPROELEC6S","price":870.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-pro-electric-system-boiler-8kw-single-phase","title":"Biasi Pro Electric System Boiler 8kW Single Phase","description":"\u003c!-- SEO Product Name: Biasi 8kW Single Phase Electric System Boiler | BIPROELEC8S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 8kW Single Phase Electric System Boiler (BIPROELEC8S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 8kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e8kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e35A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e40A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e35A\u003c\/strong\u003e at full load on a 230V single phase supply and Biasi recommend a \u003cstrong\u003e40A\u003c\/strong\u003e breaker with \u003cstrong\u003e6mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 8kW System Boiler, BIPROELEC8S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle phase 230V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e35A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e40A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e8kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 8kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e35A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e40A breaker\u003c\/strong\u003e with \u003cstrong\u003e6mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63239914520925,"sku":"BIPROELEC8S","price":895.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-pro-electric-system-boiler-12kw-single-phase","title":"Biasi Pro-Electric 12kW System Boiler | Single Phase Flueless","description":"\u003c!-- SEO Product Name: Biasi 12kW Single Phase Electric System Boiler | BIPROELEC12S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 12kW Single Phase Electric System Boiler (BIPROELEC12S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 12kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e12kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e52A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e63A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e10mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e52A\u003c\/strong\u003e at full load on a 230V single phase supply and Biasi recommend a \u003cstrong\u003e63A\u003c\/strong\u003e breaker with \u003cstrong\u003e10mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 12kW System Boiler, BIPROELEC12S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle phase 230V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e52A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e63A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e12kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 12kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e52A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e63A breaker\u003c\/strong\u003e with \u003cstrong\u003e10mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63240035172701,"sku":"BIPROELEC12S","price":950.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-pro-electric-system-boiler-16kw-three-phase","title":"Biasi Pro Electric System Boiler 16kW Three Phase","description":"\u003c!-- SEO Product Name: Biasi 16kW 3 Phase Electric System Boiler | BIPROELEC16S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 16kW Three Phase Electric System Boiler (BIPROELEC16S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 16kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e16kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e23A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e32A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 x 4mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eThree Phase Supply Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler needs a \u003cstrong\u003e400V three-phase (3N~) supply\u003c\/strong\u003e and is not compatible with standard single-phase domestic wiring. Confirm a three-phase supply before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e23A\u003c\/strong\u003e at full load on a 400V three-phase supply and Biasi recommend a \u003cstrong\u003e32A\u003c\/strong\u003e breaker with \u003cstrong\u003e3 x 4mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 16kW System Boiler, BIPROELEC16S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree phase 400V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e23A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 4mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e16kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 16kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e23A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e32A breaker\u003c\/strong\u003e with \u003cstrong\u003e3 x 4mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63240066400605,"sku":"BIPROELEC16S","price":1100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"strom-18kw-electric-combi-boiler-three-phase","title":"Strom 18kW Electric Combi Boiler Three Phase 400V - SBTP18C Instant Hot Water No Cylinder No Flue","description":"\u003c!-- SEO Product Name: Strom 18kW Electric Combi Boiler Three Phase 400V - SBTP18C Instant Hot Water No Cylinder No Flue --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 18kW Electric Combi Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP18C\u003c\/strong\u003e) delivers both central heating and \u003cstrong\u003einstant domestic hot water\u003c\/strong\u003e from a single unit, with no separate hot water cylinder or gas connection needed. Running on a standard \u003cstrong\u003e400V three-phase supply\u003c\/strong\u003e, it produces up to \u003cstrong\u003e9 litres per minute\u003c\/strong\u003e of hot water at a 30°C temperature rise, suiting larger family homes with two to four bathrooms or properties with genuinely high simultaneous hot water demand.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eBuilt around Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e, which spreads heat evenly across the whole element rather than at a single hotspot, the SBTP18C combines a \u003cstrong\u003etouchscreen control panel with LED display\u003c\/strong\u003e, an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, and near-silent operation at just \u003cstrong\u003e15dB\u003c\/strong\u003e. With no flue, no gas supply and zero carbon monoxide risk, it's a practical, space-saving replacement for a gas or oil combi in homes already wired for three-phase power.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e18 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e9 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eDHW Flow @ 30°C Rise\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e26 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eCurrent Per Phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician \u0026amp; Plumber Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e wiring regulations and current building regulations. An electrical installation certificate and \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for the new circuit, and are also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCheck Mains Flow Rate Before Buying\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe 9 litres\/minute DHW figure is the boiler's maximum output at a 30°C temperature rise; the actual hot water flow rate delivered depends on the \u003cstrong\u003eincoming mains water pressure and flow\u003c\/strong\u003e. Strom recommend sizing by heating demand first and then checking that the mains flow rate is adequate, since an electric combi may not suit every property's water supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Matters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eA proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e should be carried out before purchase. Electric boilers are 100% efficient at the point of use, so replacing an older gas or oil boiler like-for-like will typically oversize the new unit, which Part L 2022 of the Building Regulations advises against.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCombi Design, No Cylinder Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeating and \u003cstrong\u003einstant hot water from one compact unit\u003c\/strong\u003e, removing the need for a separate hot water cylinder and freeing up airing cupboard or plant room space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat spreads evenly across the \u003cstrong\u003ewhole element surface\u003c\/strong\u003e rather than at a single hotspot, improving heat-up speed and reducing limescale-related performance loss over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eNear-Silent 15dB Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003eminimal moving parts\u003c\/strong\u003e, the boiler runs quietly enough to be installed close to living areas or bedrooms without disturbance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen \u0026amp; LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003efull touchscreen interface\u003c\/strong\u003e gives precise control over flow temperature, timer settings and live system status at a glance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe \u003cstrong\u003ecirculation pump and expansion vessel are built in\u003c\/strong\u003e, simplifying installation and reducing the number of separate parts to source and fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSolar \u0026amp; Economy Tariff Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWorks alongside a \u003cstrong\u003esolar PV diverter\u003c\/strong\u003e to use surplus generation for water heating, and is well suited to \u003cstrong\u003eEconomy 10\u003c\/strong\u003e and similar time-of-use electricity tariffs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBTP18C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060797570044\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric Combi Boiler (heating \u0026amp; instant hot water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e18 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCurrent Draw\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e26 A per phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32 A per phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6mm² per phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating \u0026amp; Hot Water Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. DHW Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6.0 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDHW Flow Rate (30°C Rise)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e9 litres\/minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDHW Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating \/ DHW)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD \/ A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar PV diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBTP18C is \u003cstrong\u003e100% electric\u003c\/strong\u003e with no flue, no gas supply and no carbon monoxide risk, making it safe to install in almost any property, including new-builds and urban retrofits.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow much hot water can it supply?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eUp to \u003cstrong\u003e9 litres per minute\u003c\/strong\u003e at a 30°C temperature rise, suiting larger family homes or properties with two to four bathrooms and higher simultaneous hot water demand.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it work with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, when paired with a \u003cstrong\u003esolar PV diverter\u003c\/strong\u003e it can use surplus solar generation to help heat water, reducing running costs alongside compatible time-of-use electricity tariffs.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow quiet is the boiler in operation?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eVery quiet: Strom quote a \u003cstrong\u003e15dB sound pressure level\u003c\/strong\u003e, making it suitable for installation near living areas or bedrooms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat electrical supply does it need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eA \u003cstrong\u003ethree-phase 400V supply\u003c\/strong\u003e drawing 26A per phase, with a minimum 32A breaker per phase and 6mm² cable per phase recommended; an electrician should always confirm this against the property's actual supply.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it also run underfloor heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, the boiler's maximum flow temperature of 80°C is compatible with underfloor heating systems, which typically run at lower flow temperatures than radiators for efficient operation.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWho can install this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with BS 7671 and current UK building regulations, with full electrical and plumbing checks completed before use.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":63454854971741,"sku":"SBTP18C","price":1370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"},{"product_id":"strom-21kw-three-phase-combi-e-boiler-400v-electric-combi-boiler-touchscreen-no-flue","title":"Strom 21kW Electric Combi Boiler Three Phase 400V - SBTP21C Touchscreen Instant Hot Water No Flue","description":"\u003c!-- SEO Product Name: Strom 21kW Electric Combi Boiler Three Phase 400V - SBTP21C Touchscreen Instant Hot Water No Flue --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 21kW Electric Combi Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP21C\u003c\/strong\u003e) is a compact, high-efficiency unit that provides both \u003cstrong\u003ecentral heating and instant hot water\u003c\/strong\u003e for properties without a gas supply. Running on a \u003cstrong\u003e400V three-phase supply\u003c\/strong\u003e, its higher output over the 18kW model suits larger homes and higher simultaneous hot water demand, such as multiple bathrooms or back-to-back showers.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe boiler uses Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e for rapid, even heat transfer, and includes a \u003cstrong\u003efull-colour touchscreen interface\u003c\/strong\u003e, \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, and over \u003cstrong\u003e99% efficiency\u003c\/strong\u003e with zero carbon monoxide emissions at the point of use. Ideal for off-grid homes, flats, or properties on Economy 10-style tariffs, it removes the need for a flue, gas connection or separate hot water cylinder entirely.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e21 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e32 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eIPX4\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eProtection Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e2 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician \u0026amp; Plumber Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e wiring regulations and current building regulations. An electrical installation certificate and \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for the new circuit, and are also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eThree-Phase Supply Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model requires a \u003cstrong\u003ethree-phase 400V electrical supply\u003c\/strong\u003e. Where only single-phase power is available, Strom's single-phase system and combi boilers (up to 14.4kW) should be considered instead. Actual delivered hot water flow rate also depends on incoming mains water pressure, so this should be checked alongside the electrical supply before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Matters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eA proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e should be carried out before purchase. Electric boilers are 100% efficient at the point of use, so replacing an older gas or oil boiler like-for-like will typically oversize the new unit, which Part L 2022 of the Building Regulations advises against.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCombi Design, No Cylinder Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeating and \u003cstrong\u003einstant hot water from one compact unit\u003c\/strong\u003e, removing the need for a separate hot water cylinder and freeing up airing cupboard or plant room space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat spreads evenly across the \u003cstrong\u003ewhole element surface\u003c\/strong\u003e rather than at a single hotspot, improving heat-up speed and reducing limescale-related performance loss over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eFull-Colour Touchscreen Interface\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAn \u003cstrong\u003eintuitive touchscreen\u003c\/strong\u003e gives precise control over flow temperature and system status, simplifying day-to-day operation for the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe \u003cstrong\u003ecirculation pump and expansion vessel are built in\u003c\/strong\u003e, simplifying installation and reducing the number of separate parts to source and fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eOver 99% Efficient, Zero Emissions\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003eno flue and no on-site carbon monoxide\u003c\/strong\u003e, the boiler runs at over 99% efficiency, converting almost all its electrical input directly into usable heat.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSolar \u0026amp; Economy Tariff Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWorks alongside \u003cstrong\u003esolar PV systems\u003c\/strong\u003e and is well suited to \u003cstrong\u003eEconomy 10\u003c\/strong\u003e and similar time-of-use electricity tariffs to help manage running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBTP21C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric Combi Boiler (heating \u0026amp; instant hot water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e21 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eProtection Class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating \u0026amp; Hot Water Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDHW Flow Rate Note\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eLimited by incoming mains supply; three-phase supply recommended for bath filling\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSuitable for domestic hot water and central heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e29.1 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, no flue required\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2-year manufacturer warranty (extendable to 24 months upon registration)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar panels, Economy 10 tariffs, most UK domestic heating systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBTP21C is \u003cstrong\u003efully electric\u003c\/strong\u003e with no flue, no gas supply and no carbon monoxide risk at the point of use, making it suitable for off-grid homes, flats, or properties where a flue can't be fitted.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat electrical supply does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eA \u003cstrong\u003ethree-phase 400V supply\u003c\/strong\u003e drawing 32A, with a minimum 40A breaker and 3 x 6mm² cable recommended; an electrician should always confirm this against the property's actual supply and load.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it also run underfloor heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, the boiler is compatible with underfloor heating systems as well as standard radiator central heating circuits.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this suitable for a property with multiple bathrooms?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe 21kW output is intended for \u003cstrong\u003elarger homes with higher simultaneous hot water demand\u003c\/strong\u003e than the 18kW model, such as multiple baths or showers used close together, though delivered flow rate also depends on the property's mains water supply.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it work with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, it is compatible with solar PV systems and Economy 10-style tariffs to help reduce running costs.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWho can install this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with BS 7671 and current UK building regulations, with full electrical and plumbing checks completed before use.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":63454910808413,"sku":"SBTP21C","price":1430.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"},{"product_id":"strom-24kw-three-phase-combi-e-boiler-400v-electric-combi-boiler-touchscreen-no-flue","title":"Strom 24kW Electric Combi Boiler Three Phase 400V - SBTP24C Touchscreen Instant Hot Water No Flue","description":"\u003c!-- SEO Product Name: Strom 24kW Electric Combi Boiler Three Phase 400V - SBTP24C Touchscreen Instant Hot Water No Flue --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 24kW Electric Combi Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP24C\u003c\/strong\u003e) is the range-topping combi in Strom's electric boiler line-up, combining \u003cstrong\u003ecentral heating and instant hot water\u003c\/strong\u003e in one compact, flue-free unit. Running on a \u003cstrong\u003e400V three-phase supply\u003c\/strong\u003e, its 24kW output is intended for larger properties or higher-demand applications such as multiple bathrooms and back-to-back showers, where a smaller electric combi wouldn't keep up.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eBuilt around Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e for fast, even heat transfer, the SBTP24C pairs a \u003cstrong\u003efull-colour touchscreen interface\u003c\/strong\u003e with an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, running at over \u003cstrong\u003e99% efficiency\u003c\/strong\u003e with zero carbon monoxide emissions at the point of use. It suits off-grid homes, flats, and properties transitioning away from gas or oil, particularly where a three-phase electrical supply is already available.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e24 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e36 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eIPX4\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eProtection Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e2 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician \u0026amp; Plumber Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e wiring regulations and current building regulations. An electrical installation certificate and \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for the new circuit, and are also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eThree-Phase Supply Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model requires a \u003cstrong\u003ethree-phase 400V electrical supply\u003c\/strong\u003e. Where only single-phase power is available, Strom's single-phase system and combi boilers (up to 14.4kW) should be considered instead. Actual delivered hot water flow rate also depends on incoming mains water pressure, so this should be checked alongside the electrical supply before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Matters\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eA proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e should be carried out before purchase. Electric boilers are 100% efficient at the point of use, so replacing an older gas or oil boiler like-for-like will typically oversize the new unit, which Part L 2022 of the Building Regulations advises against.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCombi Design, No Cylinder Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeating and \u003cstrong\u003einstant hot water from one compact unit\u003c\/strong\u003e, removing the need for a separate hot water cylinder and freeing up airing cupboard or plant room space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat spreads evenly across the \u003cstrong\u003ewhole element surface\u003c\/strong\u003e rather than at a single hotspot, improving heat-up speed and reducing limescale-related performance loss over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eFull-Colour Touchscreen Interface\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAn \u003cstrong\u003eintuitive touchscreen\u003c\/strong\u003e gives precise control over flow temperature and system status, simplifying day-to-day operation for the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe \u003cstrong\u003ecirculation pump and expansion vessel are built in\u003c\/strong\u003e, simplifying installation and reducing the number of separate parts to source and fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHighest Output in the Combi Range\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAt \u003cstrong\u003e24kW\u003c\/strong\u003e, this is the largest Strom electric combi available, suited to properties with the greatest simultaneous heating and hot water demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSolar \u0026amp; Economy Tariff Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWorks alongside \u003cstrong\u003esolar PV systems\u003c\/strong\u003e and is well suited to \u003cstrong\u003eEconomy 10\u003c\/strong\u003e and similar time-of-use electricity tariffs to help manage running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBTP24C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric Combi Boiler (heating \u0026amp; instant hot water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e24 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eProtection Class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e36 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating \u0026amp; Hot Water Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDHW Flow Rate Note\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eLimited by incoming mains supply; three-phase supply recommended for bath filling\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSuitable for domestic hot water and central heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e29.1 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, no flue required\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2-year manufacturer warranty (extendable to 24 months upon registration)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar panels, Economy 10 tariffs, most UK domestic heating systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBTP24C is \u003cstrong\u003efully electric\u003c\/strong\u003e with no flue, no gas supply and no carbon monoxide risk at the point of use, making it suitable for off-grid homes, flats, or properties where a flue can't be fitted.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat electrical supply does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eA \u003cstrong\u003ethree-phase 400V supply\u003c\/strong\u003e drawing 36A, with a minimum 40A breaker and 3 x 6mm² cable recommended; an electrician should always confirm this against the property's actual supply and load.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow does this compare to the 21kW combi model?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe SBTP24C is the largest Strom combi available, suited to properties with the highest simultaneous heating and hot water demand. A heat loss and hot water demand calculation should confirm whether the smaller 21kW model would be sufficient, since Strom advise against oversizing.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it also run underfloor heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, the boiler is compatible with underfloor heating systems as well as standard radiator central heating circuits.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan it work with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, it is compatible with solar PV systems and Economy 10-style tariffs to help reduce running costs.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWho can install this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eInstallation must be carried out by a \u003cstrong\u003equalified electrician and plumber\u003c\/strong\u003e in accordance with BS 7671 and current UK building regulations, with full electrical and plumbing checks completed before use.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":63454938399069,"sku":"SBTP24C","price":1470.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/collections\/BiasiProElectricBoiler.webp?v=1771517847","url":"https:\/\/qualityheating.co.uk\/collections\/electric-boilers.oembed?page=3","provider":"AIZO Quality Heating","version":"1.0","type":"link"}