{"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":1300.0,"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":1400.0,"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 Instant Hot Water \u0026 Heating SBSP11C","description":"\u003cstyle\u003e\n  .dw-wrap{font-family:inherit;color:inherit;line-height:1.7;font-size:16px}\n  .dw-wrap p,.dw-wrap li,.dw-wrap td,.dw-wrap th{font-size:16px!important;line-height:1.7}\n  .dw-wrap h2{font-size:22px!important;font-weight:700;color:#1a3a5c;border-bottom:3px solid #008377;padding-bottom:6px;margin:2rem 0 1rem;line-height:1.3}\n  .dw-wrap h3{font-size:17px!important;font-weight:700;color:#1a3a5c;margin:1.2rem 0 0.4rem;line-height:1.4}\n  .dw-wrap p{margin:0 0 1rem}\n  .dw-wrap ul{padding-left:1.5rem;margin:0 0 1rem}\n  .dw-wrap ul li{margin-bottom:0.5rem}\n  .dw-badge{display:inline-block;font-size:13px!important;font-weight:700;border-radius:4px;padding:2px 10px;margin-right:5px;margin-bottom:4px;vertical-align:middle}\n  .dw-badge.blue{background:#008377;color:#fff}\n  .dw-badge.navy{background:#1a3a5c;color:#fff}\n  .dw-badge.teal{background:#0d9488;color:#fff}\n  .dw-badge.green{background:#1a7a3c;color:#fff}\n  .dw-badge.grey{background:#555;color:#fff}\n  .dw-intro-box{background:#e0f2fe;border-left:4px solid #008377CF;padding:1.1rem 1.4rem;border-radius:0 6px 6px 0;margin-bottom:1.5rem}\n  .dw-intro-box p{margin:0!important}\n  .dw-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:0.85rem;margin-bottom:1.2rem}\n  .dw-card{background:#e0f2fe;border:1px solid #90caf9;border-radius:6px;padding:1rem 1.1rem;line-height:1.6}\n  .dw-card strong{display:block;color:#1a3a5c;margin-bottom:0.35rem;font-size:16px!important}\n  .dw-info-box{background:#f0fdf4;border:1px solid #86efac;border-radius:6px;padding:1rem 1.2rem;margin:1.2rem 0}\n  .dw-info-box p{margin:0 0 0.5rem!important;color:#065f46;font-weight:700}\n  .dw-comp-box{background:#fff3cd;border:1px solid #ffc107;border-radius:5px;padding:0.9rem 1.1rem;margin:0.8rem 0}\n  .dw-spec-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}\n  .dw-spec-table th{background:#1a3a5c;color:#fff!important;text-align:left;padding:0.7rem 1rem;font-weight:700;font-size:16px!important}\n  .dw-spec-table td{padding:0.6rem 1rem;border-bottom:1px solid #bde0f5;vertical-align:top;font-size:16px!important}\n  .dw-spec-table tr:nth-child(even) td{background:#e0f2fe}\n  .dw-spec-table td:first-child{font-weight:600;color:#111;width:44%}\n  .dw-faq-item{border-bottom:1px solid #bde0f5;padding:0.9rem 0}\n  .dw-faq-item:last-child{border-bottom:none}\n  .dw-faq-item strong{color:#1a3a5c;font-size:16px!important;display:block;margin-bottom:0.3rem}\n  .dw-contents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0.6rem;margin-bottom:1.2rem}\n  .dw-contents-item{background:#f0f9ff;border:1px solid #bde0f5;border-radius:5px;padding:0.6rem 0.9rem;font-size:15px!important}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dw-wrap\"\u003e\n\n  \u003cdiv style=\"margin-bottom:1rem\"\u003e\n    \u003cspan class=\"dw-badge blue\"\u003eSBSP11C\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eStrom\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003e11 kW\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003eElectric Combi\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eSingle Phase\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eInstant Hot Water\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eStrom 11kW Electric Combi Boiler – Single Phase (SBSP11C)\u003c\/strong\u003e — Compact electric combi boiler providing central heating \u0026amp; instant hot water up to 5.5 l\/min | 11 kW output on 230 V single-phase | Touchscreen controls \u0026amp; LED display | Integrated pump \u0026amp; expansion vessel | No flue, no carbon monoxide risk | Near-silent operation | Solar-compatible \u0026amp; underfloor heating ready | 5-year warranty (registration required) | Ideal for small to medium homes or apartments\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ Flue-free, zero-emission heating \u0026amp; hot water – perfect for gas-free homes or off-grid properties\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003eRuns on standard single-phase 230 V supply (50 A breaker, 10 mm² cable recommended). No gas supply or flue needed — zero CO risk. High DHW flow rate suits 1–2 bathroom properties. Compatible with solar PV diverters \u0026amp; Economy 10 tariffs for maximum savings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe Strom 11kW Electric Combi Boiler (SBSP11C) is a compact, high-efficiency electric combi unit that delivers reliable central heating and instant domestic hot water without a separate cylinder or hot water tank. With 11 kW output on single-phase 230 V, it provides up to 5.5 litres per minute of hot water at a 30 °C rise — perfect for small to medium homes, apartments, or properties with 1–2 bathrooms and moderate simultaneous demand.\u003c\/p\u003e\n\n  \u003cp\u003eFeaturing intuitive touchscreen digital controls with LED display, advanced serpentine heating elements for rapid heat transfer, integrated circulation pump and expansion vessel, the boiler operates almost silently (15 dB sound pressure level) thanks to minimal moving parts. No flue or chimney required — completely emission-free and carbon monoxide safe. Fully compatible with solar PV systems (via diverter), underfloor heating, and smart tariffs (Economy 10), it offers a modern, low-maintenance heating solution for homes transitioning away from gas or oil.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the Strom 11kW Electric Combi Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstant Hot Water \u0026amp; Heating in One Unit\u003c\/strong\u003e — Combi design eliminates need for hot water cylinder — saves space \u0026amp; installation costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlue-Free \u0026amp; Zero Emissions\u003c\/strong\u003e — No gas, no flue, no CO risk — safe for any property, including new-builds or urban retrofits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNear-Silent Operation\u003c\/strong\u003e — Only 15 dB — quieter than a whisper — ideal for installation near living areas or bedrooms.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchscreen Controls\u003c\/strong\u003e — Modern digital interface for easy temperature adjustment, scheduling \u0026amp; status monitoring.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Vessel\u003c\/strong\u003e — All-in-one system — simplifies plumbing \u0026amp; reduces external components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSolar \u0026amp; Economy Tariff Ready\u003c\/strong\u003e — Pair with PV diverter or Economy 10 for significantly reduced running costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5-Year Warranty\u003c\/strong\u003e — Register online for full coverage — long-term peace of mind.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"dw-grid\"\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003e11 kW Output\u003c\/strong\u003eSuitable single-phase performance — ideal for small to medium homes.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eInstant DHW Flow\u003c\/strong\u003eUp to 5.5 l\/min at 30 °C rise — fast filling sinks \u0026amp; powerful showers.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eTouchscreen \u0026amp; LED Display\u003c\/strong\u003eIntuitive digital controls for precise temperature \u0026amp; timer settings.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/strong\u003eCompact all-in-one design — fewer external parts \u0026amp; easier install.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNo Flue or CO Risk\u003c\/strong\u003eEmission-free electric operation — safe for any property.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNear-Silent Running\u003c\/strong\u003eOnly 15 dB — suitable for quiet environments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eSolar PV Compatible\u003c\/strong\u003eUse with diverter to heat water for free using surplus solar.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"dw-spec-table\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMPN \/ SKU\u003c\/td\u003e\n\u003ctd\u003eSBSP11C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5060438331966 \/ 5060797570013\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e230 V AC, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e48 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Breaker\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Cable Size\u003c\/td\u003e\n\u003ctd\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax DHW Pressure\u003c\/td\u003e\n\u003ctd\u003e6.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd\u003e80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDHW Flow Rate @ 30 °C Rise\u003c\/td\u003e\n\u003ctd\u003e5.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003eHeating: 3\/4\" Male, PRV: 1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e700 × 425 × 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eErP Rating (Heating \/ DHW)\u003c\/td\u003e\n\u003ctd\u003eD \/ A\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  \u003c\/table\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cdiv class=\"dw-contents-grid\"\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ 1 × Strom 11kW Electric Combi Boiler (SBSP11C)\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Wall fixings \u0026amp; mounting guide\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Installation \u0026amp; user manual\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Installation by qualified electrician\/plumber per BS 7671 \u0026amp; building regulations. Recommended 50 A breaker \u0026amp; 10 mm² cable. Compatible with solar PV diverters, Economy 10 tariffs, underfloor heating \u0026amp; most UK domestic systems. Register online for full 5-year warranty. No flue or gas supply required — zero CO risk.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it require a flue or gas connection?\u003c\/strong\u003e\n    No — 100% electric operation. No flue, no gas supply, no carbon monoxide risk — safe for any property.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat size property is this suitable for?\u003c\/strong\u003e\n    Ideal for small to medium homes or apartments with 1–2 bathrooms and moderate hot water demand (5.5 l\/min @ 30 °C rise). For larger properties consider the 14.4 kW model.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it work with solar panels?\u003c\/strong\u003e\n    Yes — pair with a solar diverter to heat water using surplus PV generation — significantly reduces running costs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow quiet is the boiler?\u003c\/strong\u003e\n    Extremely quiet — only 15 dB sound pressure level — suitable for installation near living areas or bedrooms.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat electrical supply is needed?\u003c\/strong\u003e\n    Single-phase 230 V, 48 A draw. Requires 50 A breaker \u0026amp; minimum 10 mm² cable — consult electrician for load check.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs there a warranty?\u003c\/strong\u003e\n    Yes — 5 years manufacturer warranty (registration required on Strom website). Covers manufacturing defects.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it supply underfloor heating?\u003c\/strong\u003e\n    Yes — fully compatible with underfloor systems (max flow temp 80 °C). Low running costs when paired with Economy tariffs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWho installs it?\u003c\/strong\u003e\n    Qualified electrician \u0026amp; plumber per BS 7671 \u0026amp; building regulations. Full electrical \u0026amp; plumbing checks required before use.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954495529309,"sku":"SBSP11C","price":1070.0,"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 Instant Hot Water \u0026 Heating SBSP15C","description":"\u003cstyle\u003e\n  .dw-wrap{font-family:inherit;color:inherit;line-height:1.7;font-size:16px}\n  .dw-wrap p,.dw-wrap li,.dw-wrap td,.dw-wrap th{font-size:16px!important;line-height:1.7}\n  .dw-wrap h2{font-size:22px!important;font-weight:700;color:#1a3a5c;border-bottom:3px solid #008377;padding-bottom:6px;margin:2rem 0 1rem;line-height:1.3}\n  .dw-wrap h3{font-size:17px!important;font-weight:700;color:#1a3a5c;margin:1.2rem 0 0.4rem;line-height:1.4}\n  .dw-wrap p{margin:0 0 1rem}\n  .dw-wrap ul{padding-left:1.5rem;margin:0 0 1rem}\n  .dw-wrap ul li{margin-bottom:0.5rem}\n  .dw-badge{display:inline-block;font-size:13px!important;font-weight:700;border-radius:4px;padding:2px 10px;margin-right:5px;margin-bottom:4px;vertical-align:middle}\n  .dw-badge.blue{background:#008377;color:#fff}\n  .dw-badge.navy{background:#1a3a5c;color:#fff}\n  .dw-badge.teal{background:#0d9488;color:#fff}\n  .dw-badge.green{background:#1a7a3c;color:#fff}\n  .dw-badge.grey{background:#555;color:#fff}\n  .dw-intro-box{background:#e0f2fe;border-left:4px solid #008377CF;padding:1.1rem 1.4rem;border-radius:0 6px 6px 0;margin-bottom:1.5rem}\n  .dw-intro-box p{margin:0!important}\n  .dw-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:0.85rem;margin-bottom:1.2rem}\n  .dw-card{background:#e0f2fe;border:1px solid #90caf9;border-radius:6px;padding:1rem 1.1rem;line-height:1.6}\n  .dw-card strong{display:block;color:#1a3a5c;margin-bottom:0.35rem;font-size:16px!important}\n  .dw-info-box{background:#f0fdf4;border:1px solid #86efac;border-radius:6px;padding:1rem 1.2rem;margin:1.2rem 0}\n  .dw-info-box p{margin:0 0 0.5rem!important;color:#065f46;font-weight:700}\n  .dw-comp-box{background:#fff3cd;border:1px solid #ffc107;border-radius:5px;padding:0.9rem 1.1rem;margin:0.8rem 0}\n  .dw-spec-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}\n  .dw-spec-table th{background:#1a3a5c;color:#fff!important;text-align:left;padding:0.7rem 1rem;font-weight:700;font-size:16px!important}\n  .dw-spec-table td{padding:0.6rem 1rem;border-bottom:1px solid #bde0f5;vertical-align:top;font-size:16px!important}\n  .dw-spec-table tr:nth-child(even) td{background:#e0f2fe}\n  .dw-spec-table td:first-child{font-weight:600;color:#111;width:44%}\n  .dw-faq-item{border-bottom:1px solid #bde0f5;padding:0.9rem 0}\n  .dw-faq-item:last-child{border-bottom:none}\n  .dw-faq-item strong{color:#1a3a5c;font-size:16px!important;display:block;margin-bottom:0.3rem}\n  .dw-contents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0.6rem;margin-bottom:1.2rem}\n  .dw-contents-item{background:#f0f9ff;border:1px solid #bde0f5;border-radius:5px;padding:0.6rem 0.9rem;font-size:15px!important}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dw-wrap\"\u003e\n\n  \u003cdiv style=\"margin-bottom:1rem\"\u003e\n    \u003cspan class=\"dw-badge blue\"\u003eSBSP15C\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eStrom\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003e14.4 kW\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003eElectric Combi\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eSingle Phase\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eInstant Hot Water\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eStrom 14.4kW Electric Combi Boiler – Single Phase (SBSP15C)\u003c\/strong\u003e — Powerful electric combi boiler delivering central heating \u0026amp; instant hot water up to 7 l\/min | 14.4 kW output on 230 V single-phase | Touchscreen controls \u0026amp; LED display | Integrated pump \u0026amp; expansion vessel | No flue, no carbon monoxide risk | Near-silent operation | Solar-compatible \u0026amp; underfloor heating ready | 5-year warranty (registration required) | Ideal for larger homes or high hot water demand properties\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ Flue-free, emission-free alternative to gas\/oil – perfect for off-grid, new-build or retrofit homes\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003eRuns on standard single-phase 230 V supply (63 A breaker, 10 mm² cable recommended). No gas supply or flue needed — zero CO risk. High DHW flow rate suits larger properties. Compatible with solar PV diverters \u0026amp; Economy 10 tariffs for maximum savings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe Strom 14.4kW Electric Combi Boiler (SBSP15C) is a compact, high-performance electric combi unit that provides reliable central heating and instant domestic hot water without the need for a separate cylinder or hot water tank. With 14.4 kW output on single-phase 230 V, it delivers up to 7 litres per minute of hot water at a 30 °C rise — ideal for larger family homes, properties with multiple bathrooms or higher simultaneous demand.\u003c\/p\u003e\n\n  \u003cp\u003eFeaturing advanced touchscreen digital controls with LED display, serpentine heating elements for efficient heat transfer, integrated circulation pump and expansion vessel, the boiler is exceptionally quiet (15 dB sound pressure level) thanks to minimal moving parts. No flue or chimney required — completely emission-free and carbon monoxide safe. Compatible with solar PV systems (via diverter), underfloor heating, and smart tariffs (Economy 10), it offers a future-proof, low-maintenance heating solution for homes moving away from gas or oil.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the Strom 14.4kW Electric Combi Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstant Hot Water \u0026amp; Heating in One Unit\u003c\/strong\u003e — Combi design eliminates need for hot water cylinder — saves space \u0026amp; installation costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlue-Free \u0026amp; Zero Emissions\u003c\/strong\u003e — No gas, no flue, no CO risk — perfect for new-builds, off-grid properties or urban retrofits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNear-Silent Operation\u003c\/strong\u003e — Only 15 dB — quieter than a whisper — ideal for living areas or bedrooms.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchscreen Controls\u003c\/strong\u003e — Intuitive LED display \u0026amp; digital interface for easy temperature \u0026amp; timer adjustments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Vessel\u003c\/strong\u003e — All-in-one system — simplifies plumbing \u0026amp; reduces external components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSolar \u0026amp; Economy Tariff Ready\u003c\/strong\u003e — Pair with PV diverter or Economy 10 for massive running cost savings.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5-Year Warranty\u003c\/strong\u003e — Register online for full coverage — long-term peace of mind.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"dw-grid\"\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003e14.4 kW Output\u003c\/strong\u003ePowerful single-phase performance — suits larger homes \u0026amp; high DHW demand.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eInstant DHW Flow\u003c\/strong\u003eUp to 7 l\/min at 30 °C rise — fast filling baths \u0026amp; powerful showers.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eTouchscreen \u0026amp; LED Display\u003c\/strong\u003eModern digital controls for precise temperature \u0026amp; scheduling.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/strong\u003eCompact all-in-one design — fewer external parts \u0026amp; easier install.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNo Flue or CO Risk\u003c\/strong\u003eEmission-free electric operation — safe for any property.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNear-Silent Running\u003c\/strong\u003eOnly 15 dB — ideal for quiet environments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eSolar PV Compatible\u003c\/strong\u003eUse with diverter to heat water for free using surplus solar.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"dw-spec-table\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMPN \/ SKU\u003c\/td\u003e\n\u003ctd\u003eSBSP15C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5060438331973 \/ 5060797570029\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Output\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\u003e230 V AC, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e62 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Breaker\u003c\/td\u003e\n\u003ctd\u003e63 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Cable Size\u003c\/td\u003e\n\u003ctd\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax DHW Pressure\u003c\/td\u003e\n\u003ctd\u003e6.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd\u003e80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDHW Flow Rate @ 30 °C Rise\u003c\/td\u003e\n\u003ctd\u003e7 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003eHeating: 3\/4\" Male, PRV: 1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e700 × 425 × 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eErP Rating (Heating \/ DHW)\u003c\/td\u003e\n\u003ctd\u003eD \/ A\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  \u003c\/table\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cdiv class=\"dw-contents-grid\"\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ 1 × Strom 14.4kW Electric Combi Boiler (SBSP15C)\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Wall fixings \u0026amp; mounting guide\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Installation \u0026amp; user manual\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Installation by qualified electrician\/plumber per BS 7671 \u0026amp; building regulations. Recommended 63 A breaker \u0026amp; 10 mm² cable. Compatible with solar PV diverters, Economy 10 tariffs, underfloor heating \u0026amp; most UK domestic systems. Register online for full 5-year warranty. No flue or gas supply required — zero CO risk.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it need a flue or gas connection?\u003c\/strong\u003e\n    No — 100% electric operation. No flue, no gas supply, no carbon monoxide risk — safe for any property.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat size property is this suitable for?\u003c\/strong\u003e\n    Ideal for larger homes or properties with higher hot water demand (7 l\/min @ 30 °C rise). For very large homes consider 3-phase models or multiple units.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it work with solar panels?\u003c\/strong\u003e\n    Yes — pair with a solar diverter to heat water using surplus PV generation — significantly reduces running costs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow quiet is the boiler?\u003c\/strong\u003e\n    Extremely quiet — only 15 dB sound pressure level — suitable for installation near living areas or bedrooms.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat electrical supply is needed?\u003c\/strong\u003e\n    Single-phase 230 V, 62 A draw. Requires 63 A breaker \u0026amp; minimum 10 mm² cable — consult electrician for load check.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs there a warranty?\u003c\/strong\u003e\n    Yes — 5 years manufacturer warranty (registration required on Strom website). Covers manufacturing defects.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it supply underfloor heating?\u003c\/strong\u003e\n    Yes — fully compatible with underfloor systems (max flow temp 80 °C). Low running costs when paired with Economy tariffs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWho installs it?\u003c\/strong\u003e\n    Qualified electrician \u0026amp; plumber per BS 7671 \u0026amp; building regulations. Full electrical \u0026amp; plumbing checks required before use.\n  \u003c\/div\u003e\n\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":true}],"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","description":"\u003ch2\u003eStrom 18kW Electric System Boiler – Three Phase\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 18kW Electric System Boiler\u003c\/strong\u003e is engineered for large homes or commercial premises needing robust, high-output central heating. With a familiar layout for installers, advanced digital controls, and integrated pump and expansion vessel, it’s a powerful, low-maintenance electric heating solution.\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\u003eThree-phase power for maximum output\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 style=\"width: 100%; height: 313.501px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eModel\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e18kW System Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eEAN\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e5060797570166\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003ePower Supply\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e400V, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eOutput\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e18kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eAmps\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e27A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e3 x 4mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMax Heating Pressure\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMin Heating Pressure\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMax Flow Temp\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMin Flow Temp\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eHeating Connection\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e3\/4\" Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003ePRV Connection\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e700 x 425 x 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eERP Rating (Heating)\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954626634077,"sku":"SBTP18S","price":1170.0,"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","description":"\u003ch2\u003eStrom 21kW Electric System Boiler – Three Phase\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 21kW Electric System Boiler\u003c\/strong\u003e is the ultimate solution for high-demand heating applications in large homes or commercial buildings. With advanced controls, robust build quality, and compatibility with modern heating controls, it is a future-proof 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\u003eThree-phase power for high output\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\u003e21kW System Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060797570173\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e400V, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e21kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd\u003e3 x 6mm²\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":57954652324189,"sku":"SBTP21S","price":1249.0,"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","description":"\u003ch2\u003eStrom 24kW Electric System Boiler – Three Phase\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 24kW Electric System Boiler\u003c\/strong\u003e (Three Phase) is a powerful, compact, and highly efficient solution for large homes or commercial premises requiring robust central heating. With a familiar layout for installers, advanced touchscreen controls, and integrated pump and expansion vessel, this boiler delivers reliable, emission-free performance and is ideal for properties off the gas grid or where flueing is not possible.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh output: 24kW – suitable for large homes or commercial heating systems\u003c\/li\u003e\n\u003cli\u003eThree-phase power supply for maximum efficiency and performance\u003c\/li\u003e\n\u003cli\u003eTouchscreen digital control panel with LED display\u003c\/li\u003e\n\u003cli\u003eIntegrated pump and expansion vessel for easy installation\u003c\/li\u003e\n\u003cli\u003eSerpentine heating element for rapid, efficient heat transfer\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for near-silent, low-maintenance operation\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eCompatible with vented or unvented indirect cylinders\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003eCompact, wall-mounted design – fits in most plant rooms or cupboards\u003c\/li\u003e\n\u003cli\u003e2-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\u003e24kW Electric System Boiler (Three Phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060438332062\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eSBTP24S \/ WBTP24S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e400V, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e24kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e36A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd\u003e3 x 6mm²\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\u003eBTU Output\u003c\/th\u003e\n\u003ctd\u003e81,900 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd\u003e610 x 320 x 250 mm (some listings: 630 x 350 x 210 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eApprox. 20 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\u003ctr\u003e\n\u003cth\u003eSound Pressure Level\u003c\/th\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePerfect for large homes, commercial spaces, or properties with high heating demand\u003c\/li\u003e\n\u003cli\u003eNo flue, no risk of carbon monoxide, and no emissions at point of use\u003c\/li\u003e\n\u003cli\u003eMinimal maintenance and silent operation\u003c\/li\u003e\n\u003cli\u003eEasy to install and compatible with modern heating controls\u003c\/li\u003e\n\u003cli\u003eIdeal for Economy 10 tariffs and renewable energy integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoose the Strom 24kW Electric System Boiler for reliable, high-capacity, and future-proof electric heating.\u003c\/p\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954664710493,"sku":"SBTP24S","price":1349.0,"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 Heat Only E-Boiler","description":"\u003cp\u003eThe \u003cstrong\u003eStrom 6kW Electric Heat Only Boiler\u003c\/strong\u003e is a compact and efficient electric boiler, perfect for small homes, flats, or extensions requiring central heating only. With no flue, near-silent operation, and minimal maintenance, it’s ideal for properties off the gas grid or where space is at a premium.\u003c\/p\u003e\n\u003ch3\u003eElectric Heat Only Boiler Key Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating only – pair with an indirect hot water cylinder\u003c\/li\u003e\n\u003cli\u003eUltra-compact wall-mounted design\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for silent, reliable operation\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eLED digital display and simple controls\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer’s warranty (extendable to 24 months with registration)\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\u003eSBSP6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeat Output\u003c\/th\u003e\n\u003ctd\u003e6kW\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\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e26A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin. Breaker Size\u003c\/th\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin. Cable Size\u003c\/th\u003e\n\u003ctd\u003e2.5mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eERP Rating\u003c\/th\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Temp Range\u003c\/th\u003e\n\u003ctd\u003e20–80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Pressure Range\u003c\/th\u003e\n\u003ctd\u003e0.5–1.5 bar\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\u003e15mm Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd\u003e520 x 235 x 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060438333540\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975604183389,"sku":"SBSP6H","price":495.0,"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":false}],"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":false}],"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 - 230\/400V","description":"\u003ch1\u003eThermoSphere Electric System Boiler (4.5kW – 24kW) with Pump - 230\/400V\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eThermoSphere Electric System Boiler\u003c\/strong\u003e is a high-efficiency, slimline boiler designed for safe, clean, and powerful central heating in homes and commercial buildings without a gas supply. Available in outputs from 4.5kW up to 24kW, it’s perfectly suited for both radiator systems and underfloor heating, and is compatible with indirect unvented cylinders for hot water. This electric system boiler comes fully equipped for quick installation, offering reliable heating with no need for a flue, gas supply, or complicated maintenance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Output Range:\u003c\/strong\u003e Choose from 4.5kW, 6kW, 9kW, 12kW, 15kW, 18kW, or 24kW for everything from small flats to large commercial spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpace-Saving Wall-Mount Design:\u003c\/strong\u003e Slim footprint fits easily in kitchen cupboards, plant rooms, or utility areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Flue or Gas Needed:\u003c\/strong\u003e 100% electric operation means zero onsite emissions and silent running.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Pump \u0026amp; Expansion Vessel:\u003c\/strong\u003e Streamlined installation with included circulation pump and 7-litre expansion vessel (spec varies with model size).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-Stage Heating Elements:\u003c\/strong\u003e Multi-stage modulation for improved efficiency, comfort, and electrical safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Compatibility:\u003c\/strong\u003e Integrates with traditional radiators, wet underfloor heating, or indirect unvented cylinders for hot water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Controls Ready:\u003c\/strong\u003e Compatible with thermostats, programmers, and smart home heating controls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Safety Features:\u003c\/strong\u003e Includes high-limit thermostat, low water protection, pressure relief valve, and overheat cut-out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplies with UK \u0026amp; EU Regulations:\u003c\/strong\u003e Meets ErP Lot20 and UK electrical installation standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2–5 years depending on registration and installer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent (Max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (HxWxD, mm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. System Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSEFB-P4.5\u003c\/td\u003e\n\u003ctd\u003e4.5 kW\u003c\/td\u003e\n\u003ctd\u003e230\/400 V\u003c\/td\u003e\n\u003ctd\u003e~21 A\u003c\/td\u003e\n\u003ctd\u003e755 × 215 × 150\u003c\/td\u003e\n\u003ctd\u003e2.0 bar\u003c\/td\u003e\n\u003ctd\u003e65°C\u003c\/td\u003e\n\u003ctd\u003e14 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSEFB-P6\u003c\/td\u003e\n\u003ctd\u003e6.0 kW\u003c\/td\u003e\n\u003ctd\u003e230\/400 V\u003c\/td\u003e\n\u003ctd\u003e~27 A\u003c\/td\u003e\n\u003ctd\u003e755 × 215 × 150\u003c\/td\u003e\n\u003ctd\u003e2.0 bar\u003c\/td\u003e\n\u003ctd\u003e65°C\u003c\/td\u003e\n\u003ctd\u003e14 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSEFB-P9\u003c\/td\u003e\n\u003ctd\u003e9.0 kW\u003c\/td\u003e\n\u003ctd\u003e230\/400 V\u003c\/td\u003e\n\u003ctd\u003e~40 A\u003c\/td\u003e\n\u003ctd\u003e755 × 215 × 150\u003c\/td\u003e\n\u003ctd\u003e2.0 bar\u003c\/td\u003e\n\u003ctd\u003e65°C\u003c\/td\u003e\n\u003ctd\u003e14 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSEFB-P12\u003c\/td\u003e\n\u003ctd\u003e12.0 kW\u003c\/td\u003e\n\u003ctd\u003e230\/400 V\u003c\/td\u003e\n\u003ctd\u003e~53 A\u003c\/td\u003e\n\u003ctd\u003e755 × 215 × 150\u003c\/td\u003e\n\u003ctd\u003e2.0 bar\u003c\/td\u003e\n\u003ctd\u003e65°C\u003c\/td\u003e\n\u003ctd\u003e14 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSEFB-P15\u003c\/td\u003e\n\u003ctd\u003e15.0 kW\u003c\/td\u003e\n\u003ctd\u003e400 V\u003c\/td\u003e\n\u003ctd\u003e~22 A (per phase)\u003c\/td\u003e\n\u003ctd\u003e755 × 215 × 150\u003c\/td\u003e\n\u003ctd\u003e2.0 bar\u003c\/td\u003e\n\u003ctd\u003e65°C\u003c\/td\u003e\n\u003ctd\u003e15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSEFB-P18\u003c\/td\u003e\n\u003ctd\u003e18.0 kW\u003c\/td\u003e\n\u003ctd\u003e400 V\u003c\/td\u003e\n\u003ctd\u003e~26 A (per phase)\u003c\/td\u003e\n\u003ctd\u003e755 × 215 × 150\u003c\/td\u003e\n\u003ctd\u003e2.0 bar\u003c\/td\u003e\n\u003ctd\u003e65°C\u003c\/td\u003e\n\u003ctd\u003e15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSEFB-P24\u003c\/td\u003e\n\u003ctd\u003e24.0 kW\u003c\/td\u003e\n\u003ctd\u003e400 V\u003c\/td\u003e\n\u003ctd\u003e~35 A (per phase)\u003c\/td\u003e\n\u003ctd\u003e755 × 215 × 150\u003c\/td\u003e\n\u003ctd\u003e2.0 bar\u003c\/td\u003e\n\u003ctd\u003e65°C\u003c\/td\u003e\n\u003ctd\u003e15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating for homes, apartments, commercial spaces, extensions, and conversions\u003c\/li\u003e\n\u003cli\u003eGas-free installs, green homes, and off-grid heating systems\u003c\/li\u003e\n\u003cli\u003eWet underfloor heating and radiator circuits\u003c\/li\u003e\n\u003cli\u003eIntegration with indirect unvented hot water cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThermoSphere Electric System Boiler (selected output: 4.5kW to 24kW)\u003c\/li\u003e\n\u003cli\u003eIntegrated pump\u003c\/li\u003e\n\u003cli\u003eWall mounting hardware\u003c\/li\u003e\n\u003cli\u003eUser and installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose the ThermoSphere Electric System Boiler?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePowerful range – pick the right output from 4.5kW for small flats to 24kW for large homes or commercial needs\u003c\/li\u003e\n\u003cli\u003eZero on-site emissions for greener living\u003c\/li\u003e\n\u003cli\u003eSimple installation and easy compatibility with smart heating controls\u003c\/li\u003e\n\u003cli\u003eManufacturer support and up to 5 years warranty (subject to registration)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ThermoSphere","offers":[{"title":"4.5KW 230\/400V","offer_id":58037323628893,"sku":"TSEFB-P4.5","price":1130.0,"currency_code":"GBP","in_stock":true},{"title":"6KW 230\/400V","offer_id":58037323661661,"sku":"TSEFB-P6","price":1200.0,"currency_code":"GBP","in_stock":true},{"title":"9KW 230\/400V","offer_id":58037323694429,"sku":"TSEFB-P9","price":1330.0,"currency_code":"GBP","in_stock":true},{"title":"12KW 230\/400V","offer_id":58037323727197,"sku":"TSEFB-P12","price":1400.0,"currency_code":"GBP","in_stock":true},{"title":"15KW 400V","offer_id":58037323759965,"sku":"TSEFB-P15","price":1450.0,"currency_code":"GBP","in_stock":true},{"title":"18KW 400V","offer_id":58037323792733,"sku":"TSEFB-P18","price":1550.0,"currency_code":"GBP","in_stock":true},{"title":"24KW 400V","offer_id":58037323825501,"sku":"TSEFB-P24","price":1650.0,"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":1570.0,"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":"\u003ch1\u003eElterm Ensign Electric Combi Boiler 6kW CH \/ 14kW DHW Single Phase\u003cbr\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Ensign 6\/14kW Single Phase\u003c\/strong\u003e electric combi boiler provides \u003cstrong\u003e6kW central heating\u003c\/strong\u003e with integrated \u003cstrong\u003e14kW instantaneous domestic hot water\u003c\/strong\u003e on standard 230V single-phase supply. This compact wall-mounted unit includes built-in circulation pump, expansion vessel, and modulating electronic control, perfect for small homes without 3-phase availability.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy the Elterm Ensign 6\/14kW Single Phase Combi?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-phase 230V operation\u003c\/strong\u003e - no 3-phase upgrade required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue combi design\u003c\/strong\u003e - instant hot water + space heating in one unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6kW CH power\u003c\/strong\u003e suits well-insulated small properties (1 to 2 Bedrooms)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14kW DHW flow heater\u003c\/strong\u003e handles family hot water needs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic modulation control\u003c\/strong\u003e optimises efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in pump \u0026amp; expansion vessel\u003c\/strong\u003e complete heating package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePV-ready\u003c\/strong\u003e works with solar self-consumption\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo gas infrastructure needed\u003c\/strong\u003e - simple electric installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSmall homes\/apartments without 3-phase supply\u003c\/li\u003e\n\u003cli\u003eOff-gas properties seeking electric combi replacement\u003c\/li\u003e\n\u003cli\u003eNew builds with standard single-phase consumer units\u003c\/li\u003e\n\u003cli\u003eSolar PV homes utilising excess generation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 176.344px;\" border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 36.303%; height: 19.5938px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"width: 59.0541%; height: 19.5938px;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003eElectric Combi Boiler (Single Phase)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003eCentral Heating Power\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003e6 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003eDomestic Hot Water Power\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003e14 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003e230V Single Phase\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003eControl System\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003eLED display + electronic modulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003eIncluded Components\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003eCirculation pump, expansion vessel\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003eDHW Delivery\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003eInstantaneous flow-through (no cylinder)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 36.303%; height: 19.5938px;\"\u003eProtection\u003c\/td\u003e\n\u003ctd style=\"width: 59.0541%; height: 19.5938px;\"\u003e\u003cstrong\u003eAnti-freeze, overheat safety\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\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":"\u003ch1\u003eElterm Ensign Electric Combi Boiler 9kW CH \/ 14kW DHW Single Phase\u003cbr\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Ensign 9\/14kW Single Phase\u003c\/strong\u003e electric combi boiler delivers \u003cstrong\u003e9kW central heating\u003c\/strong\u003e and \u003cstrong\u003e14kW instant hot water\u003c\/strong\u003e using standard 230V single-phase power. Wall-mounted design with integrated hydraulics provides complete heating solution for medium homes without requiring electrical upgrades.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy the Elterm Ensign 9\/14kW Single Phase Combi?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e9kW CH capacity\u003c\/strong\u003e for medium-sized properties on single phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14kW DHW performance\u003c\/strong\u003e supports multiple bathrooms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 230V supply\u003c\/strong\u003e - widely compatible installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModulating control\u003c\/strong\u003e reduces energy consumption\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory-fitted pump\/vessel\u003c\/strong\u003e minimises plumbing work\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero carbon operation\u003c\/strong\u003e with renewable electricity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo combustion maintenance\u003c\/strong\u003e required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design\u003c\/strong\u003e fits kitchen\/utility spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMedium homes (80-120m²) with single-phase supply\u003c\/li\u003e\n\u003cli\u003eGas boiler replacements avoiding electrical upgrades\u003c\/li\u003e\n\u003cli\u003eProperties with existing 100A consumer units\u003c\/li\u003e\n\u003cli\u003eFlats requiring independent heating\/hot water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"5\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoiler Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eElectric Combi Boiler (Single Phase)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentral Heating Power\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e9 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDomestic Hot Water Power\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e14 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e230V Single Phase\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl System\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLED display + electronic modulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCirculation pump, expansion vessel\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDHW Delivery\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eInstantaneous flow-through (no cylinder)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAnti-freeze, overheat safety\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\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":"\u003ch1\u003eElterm Ensign Electric Combi Boiler 12kW CH \/ 14kW DHW Single Phase\u003cbr\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Ensign 12\/14kW Single Phase\u003c\/strong\u003e offers maximum \u003cstrong\u003e12kW central heating\u003c\/strong\u003e with \u003cstrong\u003e14kW instant hot water\u003c\/strong\u003e on standard 230V supply. High-output electric combi for larger properties maintaining compact footprint and simple installation.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy the Elterm Ensign 12\/14kW Single Phase Combi?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12kW CH power\u003c\/strong\u003e handles larger radiator\/UFH circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14kW DHW capacity\u003c\/strong\u003e for high-demand households\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-phase compatibility\u003c\/strong\u003e - no electrical service upgrade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated hydraulics\u003c\/strong\u003e - pump and vessel pre-fitted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModulation control\u003c\/strong\u003e maintains comfort, saves energy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuture-proof electric\u003c\/strong\u003e design for net-zero homes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo gas safety certification\u003c\/strong\u003e required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreeze protection\u003c\/strong\u003e built-in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLarger homes (120-160m²) on single-phase supply\u003c\/li\u003e\n\u003cli\u003eFamily properties with multiple bathrooms\u003c\/li\u003e\n\u003cli\u003eHigh-spec new builds avoiding gas entirely\u003c\/li\u003e\n\u003cli\u003eComprehensive electric heating upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoiler Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eElectric Combi Boiler (Single Phase)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentral Heating Power\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e12 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDomestic Hot Water Power\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e14 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e230V Single Phase\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl System\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLED display + electronic modulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCirculation pump, expansion vessel\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDHW Delivery\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eInstantaneous flow-through (no cylinder)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAnti-freeze, overheat safety\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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 Commercial Electric Boiler Range -  3-Phase System Boilers","description":"\u003ch1\u003eElterm Commercial Electric Boiler | 30–48kW 3‑Phase System Boilers\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Commercial Electric Boiler\u003c\/strong\u003e range (30, 36, 42 and 48kW) is a high‑output, three‑phase system boiler line built around Silver Line \/ Basic LED industrial controls for reliable commercial heating. These wall‑hung units provide \u003cstrong\u003efully modulating central heating\u003c\/strong\u003e with PV‑ready power limitation, making them ideal as primary or backup heat sources in commercial and large residential buildings.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy Elterm Commercial Electric Boilers (30–48kW)?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour power options\u003c\/strong\u003e – 30, 36, 42 and 48kW for accurate sizing to building heat demand.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3‑phase 400V operation\u003c\/strong\u003e with equal phase load for stable, balanced electrical supply.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePV‑ready maximum power adjustment\u003c\/strong\u003e (e.g. 30\/60\/100%) to cooperate with on‑site solar and limit grid draw.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Basic \/ Silver Line LED control\u003c\/strong\u003e with PID algorithm for smooth temperature control and reduced cycling.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat‑pump friendly\u003c\/strong\u003e – can act as an electric backup\/peak source alongside ASHPs or other low‑temperature systems.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for sealed or open systems\u003c\/strong\u003e using appropriate hydraulic components.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial buildings, light industrial units and larger homes needing 30–48kW of heat.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHybrid systems where an \u003cstrong\u003eelectric boiler backs up a heat pump\u003c\/strong\u003e in cold weather.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSites aiming to \u003cstrong\u003edecarbonise heating\u003c\/strong\u003e using PV, green tariffs or off‑peak electricity.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstallations requiring \u003cstrong\u003eno flue or combustion plant\u003c\/strong\u003e and low ongoing maintenance.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e30–48kW Model Summary\u003c\/h2\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"5\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommercial Electric Boiler 30kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30kW space heating\u003c\/td\u003e\n\u003ctd\u003e400V 3‑phase\u003c\/td\u003e\n\u003ctd\u003eBasic \/ Silver Line LED, PID modulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommercial Electric Boiler 36kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36kW space heating\u003c\/td\u003e\n\u003ctd\u003e400V 3‑phase\u003c\/td\u003e\n\u003ctd\u003eBasic \/ Silver Line LED, PV‑ready power limiting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommercial Electric Boiler 42kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e42kW space heating\u003c\/td\u003e\n\u003ctd\u003e400V 3‑phase\u003c\/td\u003e\n\u003ctd\u003eIndustrial LED control, staged\/step modulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommercial Electric Boiler 48kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48kW space heating\u003c\/td\u003e\n\u003ctd\u003e400V 3‑phase\u003c\/td\u003e\n\u003ctd\u003eBasic LED automation, PID, PV‑cooperation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCommon Technical Features (30–48kW)\u003c\/h2\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"5\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoiler Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCommercial electric system boiler (heating only)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Range\u003c\/td\u003e\n\u003ctd\u003e30 \/ 36 \/ 42 \/ 48kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e400V 3N~ 50Hz, 3‑phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003eBasic \/ Silver Line LED, PID regulator, output limiting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003eUp to ~99% electrical‑to‑heat conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd\u003eTypically up to 95°C (industrial series limit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eFor closed or open heating systems with correct safety kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegration\u003c\/td\u003e\n\u003ctd\u003eCan work as main heat source or back‑up for heat pumps\/other boilers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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 - Reliable, Efficient Heating","description":"\u003ch1\u003eElterm Electric System Boilers Colonel - Reliable, Efficient Heating\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Electric System Boilers \u003c\/strong\u003eoffer a dependable and energy-efficient heating solution engineered for consistent performance and minimal maintenance. Featuring advanced LCD automation with built-in weekly temperature control and weather compensation, these boilers ensure precise temperature regulation and reduced running costs. Their robust design and innovative electric heating technology make them suitable for both residential and commercial central heating systems where clean, quiet operation is crucial.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy Elterm Colonel Electric System Boilers?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced LCD control\u003c\/strong\u003e with weekly timer and weather compensation for optimal comfort\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x PV-ready functionality\u003c\/strong\u003e enabling integration with solar power systems for energy savings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible output modulation\u003c\/strong\u003e allowing precise power adjustments to match heating demand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat pump cooperation ready\u003c\/strong\u003e for hybrid system compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and robust design\u003c\/strong\u003e suitable for various installation environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional remote control\u003c\/strong\u003e via smartphone app or radio control set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eResidential and commercial central heating systems requiring system boilers\u003c\/li\u003e\n\u003cli\u003eProperties with separate hot water storage cylinders\u003c\/li\u003e\n\u003cli\u003eInstallations aiming to maximise solar PV self-consumption\u003c\/li\u003e\n\u003cli\u003eSites needing precise temperature control and reduced energy use\u003c\/li\u003e\n\u003cli\u003eHybrid systems combining electric boilers with heat pumps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eModel Options (Power Ratings)\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\" cellspacing=\"0\" cellpadding=\"5\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 34.767%;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 27.0609%;\"\u003ePower\u003c\/th\u003e\n\u003cth style=\"width: 38.172%;\"\u003eSupply Voltage\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.767%;\"\u003eColonel 4kW\u003c\/td\u003e\n\u003ctd style=\"width: 27.0609%;\"\u003e4 kW\u003c\/td\u003e\n\u003ctd style=\"width: 38.172%;\"\u003e230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.767%;\"\u003eColonel 9kW\u003c\/td\u003e\n\u003ctd style=\"width: 27.0609%;\"\u003e9 kW\u003c\/td\u003e\n\u003ctd style=\"width: 38.172%;\"\u003e230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.767%;\"\u003eColonel 12kW\u003c\/td\u003e\n\u003ctd style=\"width: 27.0609%;\"\u003e12 kW\u003c\/td\u003e\n\u003ctd style=\"width: 38.172%;\"\u003e230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.767%;\"\u003eColonel 14kW \u003c\/td\u003e\n\u003ctd style=\"width: 27.0609%;\"\u003e15 kW max\u003c\/td\u003e\n\u003ctd style=\"width: 38.172%;\"\u003e230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTechnical Highlights\u003c\/h2\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"5\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating Type\u003c\/td\u003e\n\u003ctd\u003eElectric system boiler for central heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Control\u003c\/td\u003e\n\u003ctd\u003eLED advanced display with temperature readout, setting, and weekly schedules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Modulation\u003c\/td\u003e\n\u003ctd\u003eStep and PID control enabling fine power adjustments and energy management\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegration\u003c\/td\u003e\n\u003ctd\u003eCompatible with heat pumps and solar PV systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety\u003c\/td\u003e\n\u003ctd\u003eBuilt-in anti-freeze, overheat protection, and emergency stop switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eSuitable for open or closed central heating systems (additional safety groups needed for open systems)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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":"\u003cp\u003eThe \u003cstrong\u003eElterm Electric In-line Boiler Capitan\u003c\/strong\u003e is a \u003cstrong\u003eheat only electric boiler\u003c\/strong\u003e designed for efficient and reliable operation in sealed or air-vented central heating systems. Equipped with advanced LCD controls, weather compensation, and 4 x PV-ready functionality, it provides precise temperature management and energy savings. Its robust construction and integrated electronic pump make it ideal for use as a main or alternative heat source, particularly in systems incorporating heat pumps or photovoltaic installations.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat only boiler\u003c\/strong\u003e suitable for sealed or open central heating systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced LCD automation\u003c\/strong\u003e with electronic temperature setting (5-70°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x PV-ready functionality\u003c\/strong\u003e for maximising solar power use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in electronic pump\u003c\/strong\u003e ensuring reliable circulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with heat pump systems\u003c\/strong\u003e for hybrid heating solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModulating power adjustment\u003c\/strong\u003e with max power control available on 15, 18, and 24kW models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy efficiency class D\u003c\/strong\u003e with operational range A+++ to D based on usage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperates on single or three-phase supply\u003c\/strong\u003e depending on model and power rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic anti-stop function\u003c\/strong\u003e to prevent pump seizure during non-use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for professional heating installations\u003c\/strong\u003e with reliable, quiet operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSealed or air-vented central heating circuits requiring heat only boilers\u003c\/li\u003e\n\u003cli\u003eBuildings integrating solar PV with electric heating backup\u003c\/li\u003e\n\u003cli\u003eHybrid heat pump and electric boiler systems\u003c\/li\u003e\n\u003cli\u003eResidential and commercial applications needing compact, efficient electric heating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePower Variants\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\" style=\"width: 100%; height: 97.969px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 23.7555%; height: 19.5938px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 33.2925%; height: 19.5938px;\"\u003ePower Range (kW)\u003c\/th\u003e\n\u003cth style=\"width: 36.1662%; height: 19.5938px;\"\u003eSupply\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 23.7555%; height: 19.5938px;\"\u003eCapitan 6kW\u003c\/td\u003e\n\u003ctd style=\"width: 33.2925%; height: 19.5938px;\"\u003e6 kW\u003c\/td\u003e\n\u003ctd style=\"width: 36.1662%; height: 19.5938px;\"\u003eSingle Phase 230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 23.7555%; height: 19.5938px;\"\u003eCapitan 9kW\u003c\/td\u003e\n\u003ctd style=\"width: 33.2925%; height: 19.5938px;\"\u003e9 kW\u003c\/td\u003e\n\u003ctd style=\"width: 36.1662%; height: 19.5938px;\"\u003eSingle Phase 230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 23.7555%; height: 19.5938px;\"\u003eCapitan 12kW\u003c\/td\u003e\n\u003ctd style=\"width: 33.2925%; height: 19.5938px;\"\u003e12 kW\u003c\/td\u003e\n\u003ctd style=\"width: 36.1662%; height: 19.5938px;\"\u003eSingle Phase 230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 23.7555%; height: 19.5938px;\"\u003eCapitan 14kW\u003c\/td\u003e\n\u003ctd style=\"width: 33.2925%; height: 19.5938px;\"\u003e14 kW\u003c\/td\u003e\n\u003ctd style=\"width: 36.1662%; height: 19.5938px;\"\u003eSingle Phase 230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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 12, MT Electric Combi Boiler – 12kW","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003e\u003cstrong\u003eE.C.A Arceus EK 12, MT Electric Combi Boiler – 12kW \u003c\/strong\u003eis a compact, wall‑mounted electric combi boiler designed to provide central heating and instantaneous domestic hot water without the need for gas. The MT (Monothermic Type) design incorporates separate heating circuits within a stainless steel tank‑type heat exchanger, delivering quiet (around 38 dB), zero‑emission operation for modern homes and apartments.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12kW electric combi boiler\u003c\/strong\u003e – provides central heating and instantaneous domestic hot water in one compact appliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT monothermic design\u003c\/strong\u003e – dual water heating circuits inside a stainless steel tank heat exchanger for space heating and DHW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% efficient at point of use\u003c\/strong\u003e – all electrical energy is converted into heat within the system, with no flue losses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange‑rateable output\u003c\/strong\u003e – heating side can be range‑rated (e.g. from 12kW down to 6kW) to improve ErP rating and better match property demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStaged electric elements\u003c\/strong\u003e – multiple resistors are switched in stages for simple, reliable modulation and load management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVery quiet operation\u003c\/strong\u003e – approximately 38 dB sound level, suitable for installation in utility rooms, cupboards or kitchens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWRAS‑approved\u003c\/strong\u003e – compliant for use on UK potable water systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm compatible\u003c\/strong\u003e – supports OpenTherm smart room thermostats, improving control and reducing energy use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt‑in smart modulator\u003c\/strong\u003e – optimises element staging and temperature control for stable comfort and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic filling loop \u0026amp; bypass\u003c\/strong\u003e – integrated components simplify installation and help protect the system and boiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection \u0026amp; ECO modes\u003c\/strong\u003e – frost protection for the boiler and ECO\/COMFORT modes on the domestic hot water circuit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerformance \u0026amp; Application\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating output:\u003c\/strong\u003e 12kW nominal, suitable for well‑insulated small to medium properties (typical heated area up to ~90–100 m², load‑dependent).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDHW performance:\u003c\/strong\u003e maximum domestic hot water flow rate around 7.0–7.4 litres per minute at 35°C temperature rise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErP ratings:\u003c\/strong\u003e ErP D for space heating; ErP C for domestic hot water efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for all‑electric homes\u003c\/strong\u003e – properties without a gas supply, flats, or projects pairing an electric boiler with renewables and smart tariffs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e E.C.A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Arceus EK 12, MT Electric Combi Boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 8116270010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat output:\u003c\/strong\u003e 12kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply:\u003c\/strong\u003e 230V single‑phase or 400V three‑phase (model range supports both; wiring to be configured to site supply)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler type:\u003c\/strong\u003e wall‑hung, dual‑circuit (central heating and DHW)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum hot water flow rate:\u003c\/strong\u003e approx. 7–7.4 l\/min at 35°C ΔT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeasonal efficiency:\u003c\/strong\u003e ~36% seasonal (space heating) with D‑class ErP; water heating ErP class C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat exchanger:\u003c\/strong\u003e stainless steel tank‑type with removable electric elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e advanced LCD control panel, built‑in diagnostics, ECO\/COMFORT modes, OpenTherm interface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e 3‑bar safety valve, automatic bypass, frost protection, overheat protection, pressure sensor and fault diagnostics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (H x W x D):\u003c\/strong\u003e approx. 678 x 410 x 288 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprox. weight:\u003c\/strong\u003e around 27–30 kg (dry)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprovals:\u003c\/strong\u003e CE, WRAS and other regional approvals (TSE, EAC, etc.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMust be installed and commissioned by a competent, qualified engineer in accordance with the manufacturer’s installation manual and local wiring\/plumbing regulations.\u003c\/li\u003e\n\u003cli\u003eSuitable for sealed central heating systems; ensure appropriate expansion vessel, safety valve and system treatment are provided.\u003c\/li\u003e\n\u003cli\u003eElectrical supply sizing, protective devices and cable selection must be calculated to suit the 12kW load and supply type (single‑phase or three‑phase).\u003c\/li\u003e\n\u003cli\u003ePair with a suitable OpenTherm or on\/off room thermostat and, where applicable, smart controls or tariffs for best running cost and comfort.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"E.C.A","offers":[{"title":"Default Title","offer_id":62857693102429,"sku":"8116270010","price":1430.0,"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 15, MT Electric Combi Boiler – 15kW","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003e\u003cstrong\u003eE.C.A Arceus EK 15, MT Electric Combi Boiler – 15kW (MPN: 8116271010)\u003c\/strong\u003e is a high‑efficiency, wall‑mounted electric combi boiler designed for properties without a gas supply or where an all‑electric solution is preferred. The MT (Monothermic Type) configuration incorporates two water heating circuits within a stainless steel tank‑formed heat exchanger, enabling the boiler to act as both a central heating source and instantaneous domestic hot water heater in one compact appliance.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15kW electric combi boiler\u003c\/strong\u003e – delivers both central heating and instantaneous domestic hot water from a single compact wall‑hung unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonothermic tank design\u003c\/strong\u003e – dual water circuits inside a stainless steel tank‑type heat exchanger provide separate CH and DHW functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% point‑of‑use efficiency\u003c\/strong\u003e – all electrical input is converted to heat on site, with no flue losses or combustion emissions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStaged electric elements\u003c\/strong\u003e – multiple resistors are switched in stages for simple, reliable modulation and smoother load management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange‑rateable output\u003c\/strong\u003e – heating output can be range‑rated to better match property demand and improve ErP efficiency rating when configured.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVery low noise level\u003c\/strong\u003e – quiet operation at approximately 38 dB makes it suitable for use in kitchens, cupboards and utility rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWRAS‑approved\u003c\/strong\u003e – certified for use on UK potable water systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt‑in smart modulator\u003c\/strong\u003e – optimises staging of elements, helping maintain stable temperatures and improve comfort and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm compatible\u003c\/strong\u003e – supports OpenTherm smart room thermostats, improving control and offering potential 15–20% energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic filling loop and bypass\u003c\/strong\u003e – factory‑integrated components simplify installation and help protect the boiler and system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection \u0026amp; ECO modes\u003c\/strong\u003e – built‑in frost protection and ECO\/COMFORT modes on the domestic hot water circuit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerformance \u0026amp; Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentral heating output:\u003c\/strong\u003e approx. 14.9kW (about 50,840 BTU\/h), suitable for well‑insulated small to medium properties (typical heated area up to ~110–120 m², load‑dependent).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomestic hot water:\u003c\/strong\u003e maximum DHW output around 14.9kW with a flow rate up to about 9.3 litres per minute at a 35°C temperature rise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErP ratings:\u003c\/strong\u003e ErP D for space heating seasonal efficiency, ErP C for domestic hot water efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal applications:\u003c\/strong\u003e all‑electric homes, apartments, off‑grid and low‑carbon projects, or properties pairing electric heating with PV, batteries and smart tariffs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e E.C.A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Arceus EK 15, MT Electric Combi Boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 8116271010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ EAN‑13:\u003c\/strong\u003e 8682182000980\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal output:\u003c\/strong\u003e 14.9–15kW (central heating and DHW)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply options:\u003c\/strong\u003e 400V three‑phase or 230V single‑phase (up to 15kW, configured according to site supply and wiring design)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler type:\u003c\/strong\u003e wall‑hung electric combi, sealed system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat exchanger:\u003c\/strong\u003e stainless steel tank‑type, with electric elements that can be removed and cleaned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e digital front panel with LCD, built‑in diagnostics, ECO\/COMFORT modes, OpenTherm interface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety features:\u003c\/strong\u003e 3‑bar safety valve, automatic bypass, frost protection, overheat thermostat, pressure sensor, flow sensor and error logging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (H x W x D):\u003c\/strong\u003e approx. 678 x 410 x 288 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e around 27 kg (approx. 30 kg gross with packaging)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e typically 3–5 years depending on distributor and registration (check specific T\u0026amp;Cs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprovals:\u003c\/strong\u003e CE, WRAS and other regional conformity marks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation and commissioning must be carried out by a suitably qualified engineer in accordance with the E.C.A installation manual and local electrical and plumbing regulations.\u003c\/li\u003e\n\u003cli\u003eDesigned for sealed central heating systems; ensure an appropriately sized expansion vessel, safety valve and system treatment (inhibitor) are provided.\u003c\/li\u003e\n\u003cli\u003eElectrical supply, cable sizing and protective devices must be correctly selected for the 15kW load and supply type (single‑phase or three‑phase).\u003c\/li\u003e\n\u003cli\u003eFor best efficiency and comfort, pair the boiler with an OpenTherm thermostat and consider integration with smart tariffs or home energy management where available.\u003c\/li\u003e\n\u003c\/ul\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 15, ST Electric System Boiler – 15kW","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003e\u003cstrong\u003eE.C.A Arceus EK 15, ST Electric System Boiler – 15kW (MPN: 8116285010)\u003c\/strong\u003e is a compact, wall‑mounted electric system boiler for sealed central heating systems with an external indirect cylinder. The ST (Storage Tank) configuration combines space heating with control of a separate hot water storage cylinder via an internal 3‑way valve, keeping stored domestic hot water at the desired temperature while delivering quiet, zero‑emission electric heating.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15kW electric system boiler\u003c\/strong\u003e – provides central heating and controls an external hot water storage cylinder rather than producing instantaneous DHW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eST (Storage Tank) design\u003c\/strong\u003e – no internal plate heat exchanger; instead, an integrated 3‑way valve diverts primary water to the cylinder coil when cylinder temperature falls below setpoint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% efficient at point of use\u003c\/strong\u003e – all electrical input is converted to heat on site, with no flue losses or combustion gases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange‑rateable output\u003c\/strong\u003e – boiler output can be reduced (range‑rated) to better match system demand and improve ErP efficiency when configured correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt‑in Smart modulator\u003c\/strong\u003e – manages staged electric elements and temperature control for smoother operation and energy saving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm compatible\u003c\/strong\u003e – supports OpenTherm smart room thermostats, typically improving efficiency and comfort by 15–20%.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilent, compact operation\u003c\/strong\u003e – low noise level around 38 dB and small footprint make it suitable for cupboards, kitchens and utility rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEconomy \/ energy‑saving mode\u003c\/strong\u003e – selectable operating modes for reduced energy consumption when full comfort is not required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection\u003c\/strong\u003e – integrated freeze protection for the boiler and system water within the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel heating tank \u0026amp; special‑alloy elements\u003c\/strong\u003e – robust tank‑type heat exchanger with durable electric resistors for long life and reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerformance \u0026amp; Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentral heating output:\u003c\/strong\u003e approx. 14.9kW (around 50,840 BTU\/h), suitable for well‑insulated small to medium homes (typical heated area up to ~110–120 m², load‑dependent).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomestic hot water:\u003c\/strong\u003e via external unvented or vented cylinder; boiler maintains cylinder temperature rather than producing instantaneous hot water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErP classification:\u003c\/strong\u003e seasonal space heating ErP class D (typical for direct‑electric boilers of this type).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for:\u003c\/strong\u003e all‑electric homes, properties without gas, and systems pairing electric heating with PV, batteries or low‑carbon tariffs, where a separate cylinder is preferred.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e E.C.A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Arceus EK 15, ST Electric System Boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 8116285010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ EAN‑13:\u003c\/strong\u003e 8682182001123\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal output (CH):\u003c\/strong\u003e approx. 14.9–15kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply options:\u003c\/strong\u003e 400V three‑phase or 230V single‑phase up to 15kW (configured to suit site supply and electrical design)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler type:\u003c\/strong\u003e sealed system boiler with internal expansion vessel, pump and 3‑way valve for cylinder control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat exchanger:\u003c\/strong\u003e stainless steel storage‑type heating tank with special‑alloy electric elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e digital control panel with LCD display, Smart modulator, OpenTherm interface, economy mode and diagnostics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety features:\u003c\/strong\u003e automatic bypass, 3‑bar safety valve, frost protection, overheat protection, pump protection and fault diagnostics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (H x W x D):\u003c\/strong\u003e approx. 678 x 410 x 288 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e approx. 27 kg (around 30 kg gross with packaging)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e typically 3 years, subject to manufacturer terms and correct installation\/commissioning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprovals:\u003c\/strong\u003e CE, WRAS and other regional conformity certificates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMust be installed and commissioned by a suitably qualified engineer in line with E.C.A installation instructions and local electrical and plumbing regulations.\u003c\/li\u003e\n\u003cli\u003eDesigned for sealed central heating systems with an external cylinder; ensure appropriate expansion vessel volume, safety valve and system treatment are provided where required.\u003c\/li\u003e\n\u003cli\u003eElectrical supply, cabling and protective devices must be sized correctly for the 15kW load and chosen supply (single‑phase or three‑phase).\u003c\/li\u003e\n\u003cli\u003eConnect the boiler’s cylinder control and 3‑way valve ports as per the manufacturer’s schematics, and pair with an appropriate room thermostat and cylinder thermostat for optimal control.\u003c\/li\u003e\n\u003c\/ul\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 12, ST Electric System Boiler – 12kW","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003e\u003cstrong\u003eE.C.A Arceus EK 12, ST Electric System Boiler – 12kW (MPN: 8116284010)\u003c\/strong\u003e is a compact, wall‑mounted electric system boiler designed for sealed central heating systems with an external indirect hot water cylinder. The ST (Storage Tank) configuration uses an internal 3‑way valve to control cylinder charging, maintaining stored domestic hot water temperature while providing quiet, zero‑emission electric heating for modern all‑electric homes.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12kW electric system boiler\u003c\/strong\u003e – dedicated to central heating and cylinder charging; domestic hot water is supplied via a separate unvented or vented cylinder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Tank (ST) design\u003c\/strong\u003e – integrated 3‑way valve diverts primary water to the cylinder coil whenever the cylinder thermostat calls for heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% efficient at point of use\u003c\/strong\u003e – no flue or combustion, so all electrical energy is converted to useful heat on site.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange‑rateable output\u003c\/strong\u003e – central heating output can be reduced from the 11.9–12kW nominal rating to better match property heat load and improve effective efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart modulator control\u003c\/strong\u003e – stages the electric elements to deliver smooth temperature control and avoid unnecessary cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm compatible\u003c\/strong\u003e – supports OpenTherm smart thermostats for finer temperature control and potential energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow noise operation\u003c\/strong\u003e – around 38 dB sound level, making it suitable for installation in kitchens, cupboards and utility spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEconomy \/ energy‑saving mode\u003c\/strong\u003e – selectable operating mode to reduce consumption when full comfort is not required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt‑in frost protection\u003c\/strong\u003e – protects the boiler and primary circuit inside the unit during cold weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless heating tank with special‑alloy elements\u003c\/strong\u003e – durable tank‑type heat exchanger designed for long service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerformance \u0026amp; Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentral heating output:\u003c\/strong\u003e nominal 11.9–12kW (around 40,600 BTU\/h), suitable for well‑insulated small to medium properties (typically up to ~90–100 m², heat‑loss dependent).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomestic hot water:\u003c\/strong\u003e provided via an external hot water cylinder; the boiler maintains cylinder temperature rather than producing instantaneous DHW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErP classification:\u003c\/strong\u003e space‑heating ErP class D; overall system label can improve when combined with appropriate controls and cylinder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal applications:\u003c\/strong\u003e all‑electric homes, properties without gas, and projects pairing electric heating with PV, batteries and smart electricity tariffs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e E.C.A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Arceus EK 12, ST Electric System Boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 8116284010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ EAN‑13:\u003c\/strong\u003e 8682182001116\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal CH output:\u003c\/strong\u003e 11.9–12kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical supply:\u003c\/strong\u003e configurable for 230V single‑phase or 400V three‑phase (up to 15kW), subject to site design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler type:\u003c\/strong\u003e sealed system boiler with integral pump, expansion components and 3‑way valve for cylinder control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat exchanger:\u003c\/strong\u003e stainless steel heating tank with special‑alloy electric elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e digital front control panel, Smart modulator, ECO\/COMFORT modes, OpenTherm interface and fault diagnostics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety features:\u003c\/strong\u003e automatic bypass, 3‑bar safety valve, overheat protection, frost protection and system pressure monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (H x W x D):\u003c\/strong\u003e approx. 678 x 410 x 288 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e around 27 kg (approximately 30 kg gross with packaging).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, WRAS and other regional conformity approvals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical warranty:\u003c\/strong\u003e 3 years, subject to correct installation, commissioning and registration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation and commissioning should only be carried out by a suitably qualified engineer following the E.C.A installation manual and local electrical and plumbing regulations.\u003c\/li\u003e\n\u003cli\u003eDesigned for sealed systems with an external cylinder; ensure adequate expansion vessel capacity, safety valve provision and appropriate system water treatment.\u003c\/li\u003e\n\u003cli\u003eSize the electrical supply, cabling and protective devices for the 12kW load and chosen supply type (single‑phase or three‑phase).\u003c\/li\u003e\n\u003cli\u003eWire room thermostat, cylinder thermostat and OpenTherm controls according to the manufacturer’s schematics to achieve optimal comfort and efficiency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"E.C.A","offers":[{"title":"Default Title","offer_id":62857775972701,"sku":"8116284010","price":1430.0,"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 12000S 12KW Electric System Boiler","description":"\u003cp\u003eThe EHS Primus 12000S is a \u003cstrong\u003e12kW single phase electric system boiler\u003c\/strong\u003e designed to replace a gas system boiler, providing central heating via existing radiators or underfloor heating without altering the pipework.\u003c\/p\u003e\n\u003cp\u003eWhen used with an unvented indirect cylinder, it also delivers mains‑pressure hot water, with the option to heat the store on off‑peak electricity for lower running costs.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 kW single phase output\u003c\/strong\u003e for small to medium domestic properties using a wet central heating or UFH system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated pump and expansion vessel\u003c\/strong\u003e for a compact, self‑contained system boiler package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre‑wired chassis\u003c\/strong\u003e to simplify installation and reduce onsite wiring time for installers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue or gas supply required\u003c\/strong\u003e, eliminating combustion risks and flue routing constraints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouch‑screen user interface\u003c\/strong\u003e providing clear temperature and mode control at the boiler.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eHow It Fits Your System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConnects to existing radiator or underfloor heating circuits in place of a gas system boiler, using the same flow and return pipework.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned to work with an unvented indirect cylinder to provide domestic hot water for multi‑bathroom homes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCan be paired with external timers or smart stats to heat the cylinder during cheaper night‑rate or off‑peak periods.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; height: 391.876px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003ePrimus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003eElectric Heating Supplies (EHS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003ePrimus 12000S Electric System Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003eElectric system boiler (wet central heating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003e12 kW single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eSupply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003e230 V AC, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 39.1875px;\"\u003e\u003cstrong\u003eHeating Application\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 39.1875px;\"\u003eRadiator and underfloor heating systems via sealed primary circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eHot Water\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003eRequires separate unvented indirect cylinder (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 39.1875px;\"\u003e\u003cstrong\u003eIntegrated Components\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 39.1875px;\"\u003eCirculating pump and expansion vessel built into the boiler casing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 39.1875px;\"\u003e\u003cstrong\u003eControls\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 39.1875px;\"\u003eFront‑mounted touch‑screen control panel, compatible with external RF \/ Wi‑Fi stats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 39.1875px;\"\u003e\u003cstrong\u003eServicing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 39.1875px;\"\u003eNo mandatory annual service requirement (refer to EHS warranty terms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003e5 years (subject to manufacturer's T\u0026amp;Cs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003e630 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003e380 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.7573%; height: 19.5938px;\"\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.3855%; height: 19.5938px;\"\u003e230 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":62994144297309,"sku":"ALS1-1PSY-12","price":1330.0,"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-primus-14000s-14kw-electric-system-boiler","title":"EHS Primus 14000S 14KW Electric System Boiler","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eEHS Primus 14000S Electric System Boiler\u003c\/strong\u003e is a 14kW single‑phase electric system boiler designed as a direct replacement for a gas system boiler in larger homes with\u003cstrong\u003e wet central heating or underfloor heating systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Primus 14000S provides space heating via radiators or underfloor circuits and, when paired with an unvented indirect cylinder, can deliver high volumes of mains‑pressure hot water for multi‑bathroom properties. Running entirely on electricity, it requires no flue or gas supply, making it suitable for properties without gas and for use alongside low‑carbon tariffs or on‑site renewables.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e14kW single‑phase output:\u003c\/strong\u003e Sized for larger homes with higher heat demand and multiple radiators or UFH zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect gas boiler replacement:\u003c\/strong\u003e Designed to integrate with existing pipework and radiators, minimising system alterations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated components:\u003c\/strong\u003e Built‑in circulation pump and expansion vessel reduce the need for external system components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue or combustion:\u003c\/strong\u003e Zero flue, zero combustion products and no risk of gas or CO leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet operation:\u003c\/strong\u003e Very low noise thanks to the absence of a burner and limited moving parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow servicing burden:\u003c\/strong\u003e No mandatory annual gas‑safety service; maintenance is simpler than for combustion boilers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel name:\u003c\/strong\u003e EHS Primus 14000S Electric System Boiler (Primus S range).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal output:\u003c\/strong\u003e 14kW electric system boiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical supply:\u003c\/strong\u003e 230V, single‑phase, 50Hz (installer to size protective devices and cabling to manufacturer’s guidance).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler type:\u003c\/strong\u003e Electric system boiler for space heating, used with a separate indirect cylinder for DHW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (H × W × D):\u003c\/strong\u003e 630mm × 380mm × 230mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Compact wall‑mounted unit with no flue positioning constraints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 5‑year manufacturer’s warranty (subject to terms and conditions).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eControls \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder compatibility:\u003c\/strong\u003e Suitable for both vented and unvented indirect hot‑water cylinders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Works with RF or Wi‑Fi programmable thermostats and timers for temperature and time scheduling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTariff optimisation:\u003c\/strong\u003e Can be programmed to operate against off‑peak or night‑rate tariffs to reduce running costs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":62994755289437,"sku":"ALS1‑1PSY‑14","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-14","price":1350.0,"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":"\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\u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 14kW Single Phase Electric Combi Boiler (BIPROELEC14C)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted electric combi boiler\u003c\/strong\u003e that provides both central heating and on-demand hot water through your existing radiator pipework — with \u003cstrong\u003eno flue, no gas supply, and no condensate drain required\u003c\/strong\u003e. It modulates from 2 kW to 14 kW, delivers \u003cstrong\u003eup to 7 litres per minute of hot water\u003c\/strong\u003e, and operates at close to \u003cstrong\u003e100% efficiency\u003c\/strong\u003e since all electrical energy is converted directly to heat. Includes the \u003cstrong\u003eBiasi Combi Fittings Pack (Ei1124500)\u003c\/strong\u003e — full-bore isolation valves, and automatic bypass valve — all required at commissioning and a condition of the warranty.\u003c\/p\u003e\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: bold;\"\u003e14 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003eMax output (1-phase)\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: bold;\"\u003e7 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003eDHW flow rate\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: bold;\"\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: bold;\"\u003e2–14 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003ePower modulation\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: bold;\"\u003e3 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\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; a Part P certificate is required. The electrical circuit requires a \u003cstrong\u003e≥10mm² cable and ≥80A MCB\/ELCB\u003c\/strong\u003e (draws 61A at full load). The warranty requires registration within \u003cstrong\u003e45 days of commissioning\u003c\/strong\u003e, annual service, and installation of a magnetic filter on the heating return.\u003c\/div\u003e\n\u003c!-- ── TEAL WHAT'S IN THE BOX ────────────────────────────────────── --\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 Included in This Listing\u003c\/strong\u003e\n\u003cul style=\"margin: 8px 0 0 0; padding-left: 20px; font-size: 14px; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiasi Pro-Electric 14kW Single Phase Combi Boiler (BIPROELEC14C)\u003c\/strong\u003e — integrated pump, 5-litre expansion vessel, pressure gauge, safety valve, touchscreen control panel, pre-wired\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiasi Combi Fittings Pack (Ei1124500)\u003c\/strong\u003e — full-bore isolation valves (heating and DHW)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\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(260px,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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ No Flue — Install Anywhere\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eNo combustion means no flue, no condensate drain, and no gas safety risk. The boiler can be sited in any room where the electrical supply can be run — kitchen, airing cupboard, utility room, or bathroom — without planning a flue route through the external wall.\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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Direct Replacement for Gas Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eThe Pro-Electric uses the same ¾\" heating and ½\" DHW connection sizes as a conventional gas combi and fits straight into existing pipework and radiators. \u003cstrong\u003eNo system redesign is required\u003c\/strong\u003e — making it the lowest-disruption upgrade route when removing a gas boiler.\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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ 2–14 kW Power Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eOutput steps down from 14 kW to as low as 2 kW to match actual demand rather than cycling on and off at full power. This reduces electricity consumption and eliminates the rapid cycling that shortens component life in non-modulating designs.\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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ 7 L\/min DHW — Sufficient for One Bathroom\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eAt the rated 7 litres per minute, the boiler raises incoming cold water temperature by up to 30°C — delivering a comfortable shower for a property with one bathroom or en-suite. At a reduced flow rate the temperature rise is higher, giving more flexibility at the tap.\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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Underfloor Heating Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eA dedicated \u003cstrong\u003efloor heating mode limits flow temperature to 60°C\u003c\/strong\u003e, protecting UFH manifolds and pipe circuits designed for lower operating temperatures. Switching between radiator mode (up to 80°C) and floor heating mode is done via the touchscreen display.\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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Touchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eThe built-in touchscreen provides \u003cstrong\u003e24-period timer programming, winter\/summer switching, child lock, and antifreeze protection\u003c\/strong\u003e. A room thermostat input accepts any standard 2-wire on\/off demand signal — compatible with conventional wired thermostats and most smart thermostat systems with a wired relay output.\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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Solar \/ Off-Peak Tariff Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eAn electric combi is the most compatible boiler type for use with solar PV and time-of-use tariffs (Octopus Go, Economy 7, Agile). Scheduling the boiler to run during cheap-rate or self-generated electricity periods is straightforward via the 24-period timer or an external smart thermostat.\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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Fittings Pack Included — Warranty-Compliant\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eThe \u003cstrong\u003eEi1124500 fittings pack\u003c\/strong\u003e contains every component required to meet the Biasi commissioning checklist: full-bore isolation valves and automatic bypass valve. Installing without these voids the warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\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: 42%; border-bottom: 1px solid #c8e6e3;\"\u003eManufacturer \/ Part No.\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eBiasi — \u003cstrong\u003eBIPROELEC14C\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;\"\u003eWall-mounted electric combi (heating + 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;\"\u003eMax Output\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e\u003cstrong\u003e14 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;\"\u003ePower Modulation\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e2 kW – 14 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;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eSingle phase 230 V ~ 50 Hz\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;\"\u003e61 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;\"\u003eMin. Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e≥ 10 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;\"\u003eMCB \/ ELCB Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e≥ 80 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;\"\u003eDHW Max Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e7 litres\/min (at ≤30°C temperature rise)\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 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: #f0faf9;\"\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 (radiator) \/ 30°C – 60°C (floor heating mode)\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 Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e2.5 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;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e5 litres (integrated)\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;\"\u003eYes — 10m lift, ≥ 230W\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;\"\u003eWater Connections\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eHeating flow\/return: ¾\" male BSP; DHW: ½\" male BSP; PRV: 15mm\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;\"\u003eIP Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eIPX4\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 energy 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;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eTouchscreen — 24-period timer, winter\/summer mode, radiator\/UFH mode, child lock, antifreeze, room thermostat input\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;\"\u003eFittings Pack (Ei1124500)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eFull-bore isolation valves, bypass valve\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\u003e3 years\u003c\/strong\u003e (register within 45 days; annual service required; Part P certificate required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\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\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"padding: 13px 16px; cursor: pointer; font-weight: 600; background: #f0faf9;\"\u003eIs the single-phase 14kW suitable for my property?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eThe 14kW single-phase version is best suited to \u003cstrong\u003eflats, apartments, and 1–2 bedroom properties with one bathroom\u003c\/strong\u003e where the gas boiler being replaced was also in the 12–18kW range. It provides sufficient DHW flow (7 L\/min) for one shower or bath at a time, and enough heating output for a well-insulated property with modern or recently replaced radiators. For larger properties or two-bathroom homes consider the \u003cstrong\u003e25kW three-phase version\u003c\/strong\u003e — but note this requires a three-phase supply.\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 electrical work is needed before installation?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eA dedicated circuit from the consumer unit using \u003cstrong\u003e≥10mm² cable and a ≥80A MCB or ELCB\u003c\/strong\u003e is required — this is significantly larger than a typical 6mm² cooker circuit. Many properties will need a new consumer unit or an upgraded incoming supply to accommodate this, particularly in older flats where the existing supply is rated below 80A. A Part P registered electrician must carry out this work and issue a certificate; Biasi will require this certificate for warranty registration.\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: #f0faf9;\"\u003eCan it work with solar PV or a battery storage system?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eYes — an electric combi is well-suited to solar self-consumption. The 24-period internal timer can schedule heating and hot water during daylight generation windows, or an external smart thermostat (e.g. Drayton Wiser, Hive, Tado) can be wired to the room thermostat input for more dynamic control. For direct PV-to-heating diversion, a solar diverter device such as the \u003cstrong\u003emyenergi eddi\u003c\/strong\u003e can be used in conjunction, further reducing the cost-per-kWh of operation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 13px 16px; cursor: pointer; font-weight: 600; background: #fff;\"\u003eWhat does the 7 L\/min flow rate mean in practice?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eAt 7 litres per minute and a 30°C temperature rise, the boiler delivers water at approximately 50°C (assuming 20°C incoming cold mains). A comfortable mixer shower typically uses 8–12 litres per minute mixed down to 38–40°C — meaning the Pro-Electric can comfortably supply one shower outlet simultaneously. Running two showers at once, or a bath tap at full flow alongside a shower, will exceed the boiler's capacity and one outlet will experience a drop in temperature or flow. For multi-bathroom simultaneous demand, a stored hot water system (heat-only boiler with cylinder) is more appropriate.\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":995.0,"currency_code":"GBP","in_stock":false}],"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 Three-Phase Electric Combi Boiler with Fittings Pack - 400V 3-Phase, 12 L\/min DHW, No Flue, Near 100% Efficient, 15 dB, 3-Year Warranty","description":"\u003c!-- SEO Product Name: Biasi Pro-Electric 25kW Three-Phase Electric Combi Boiler with Fittings Pack BIPROELEC25C - 400V 3-Phase, 12 L\/min DHW, No Flue, Near 100% Efficient, 15 dB, 3-Year Warranty --\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\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 25kW Three-Phase Combi Boiler with Combi Fittings Pack\u003c\/strong\u003e (model BIPROELEC25C) is the highest-output boiler in Biasi UK’s electric range — designed as a \u003cstrong\u003edirect drop-in replacement for a gas combi boiler\u003c\/strong\u003e in larger homes with multiple bathrooms, high hot water demand or bath filling requirements. It delivers a \u003cstrong\u003econtinuous 12 L\/min of hot water\u003c\/strong\u003e on demand and provides \u003cstrong\u003ecentral heating compatible with existing radiators and underfloor heating\u003c\/strong\u003e, all without a flue, without gas, and without any combustion whatsoever. The boiler operates on a \u003cstrong\u003e400V three-phase 50Hz supply\u003c\/strong\u003e at 36A, requiring a 40A breaker and 3 × 6 mm² cable. Power modulates from \u003cstrong\u003e2kW to the full 25kW\u003c\/strong\u003e to match actual heating demand, at near-100% conversion efficiency. At just \u003cstrong\u003e15 dB(A)\u003c\/strong\u003e, it is virtually inaudible in operation. Dimensions: \u003cstrong\u003e630 × 380 × 230 mm\u003c\/strong\u003e, ~25 kg. This package includes the boiler, installation manual, mounting hardware, and the \u003cstrong\u003eBiasi Combi Fittings Pack (Ei1124500)\u003c\/strong\u003e — full-bore service valves and automatic bypass valve. \u003cstrong\u003eThree-year warranty\u003c\/strong\u003e (register within 45 days, annual electrical service required).\u003c\/p\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;\"\u003e25kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eOutput\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;\"\u003e12 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHot Water\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;\"\u003e400V 3Φ\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eSupply\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;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eSound 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;\"\u003e3-yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eWarranty\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;\"\u003eNear 100%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eEfficient\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;\"\u003eWhat’s Included\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 10px; margin-bottom: 24px;\"\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;\"\u003eBiasi Pro-Electric 25kW Combi Boiler (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444;\"\u003eModel BIPROELEC25C. Wall-mounted, pre-wired, with built-in pump and 6L expansion vessel.\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;\"\u003eBiasi Combi Fittings Pack (Ei1124500)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444;\"\u003eFull-bore service valves, automatic bypass valve (ABV) — everything needed for a clean installation.\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;\"\u003eMounting hardware\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444;\"\u003eWall-mounting bracket, M8×70 expansion screws, gaskets.\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;\"\u003eInstallation manual\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444;\"\u003eBiasi Pro-Electric installation manual with commissioning checklist.\u003c\/div\u003e\n\u003c\/div\u003e\n\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 Filling loop note:\u003c\/strong\u003e Biasi does not recommend a filling loop for this boiler. The system should be filled and pressurised via an alternative method approved by your installer. Consult the installation manual and your system designer.\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;\"\u003eThree-Phase Electrical Requirements\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-radius: 8px; padding: 18px 20px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"font-size: 15px; color: #005c54; font-weight: bold; margin-bottom: 10px;\"\u003e25kW three-phase (400V 3N∼) supply requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #333; line-height: 1.8;\"\u003e\n\u003cstrong\u003eSupply voltage:\u003c\/strong\u003e 400V three-phase 50Hz (3N∼)\u003cbr\u003e\u003cstrong\u003eCurrent draw:\u003c\/strong\u003e 36A\u003cbr\u003e\u003cstrong\u003eRecommended breaker (MCB\/RCD):\u003c\/strong\u003e 40A\u003cbr\u003e\u003cstrong\u003eMinimum cable size:\u003c\/strong\u003e 3 × 6 mm² copper core\u003cbr\u003e\u003cstrong\u003eLeakage protection switch:\u003c\/strong\u003e ≥50A\u003cbr\u003e\u003cstrong\u003eWiring:\u003c\/strong\u003e L1, L2, L3, N and Earth — 4+E configuration\u003cbr\u003e\u003cstrong\u003ePart P certificate:\u003c\/strong\u003e Required immediately after live connection. Must be issued by a registered electrician.\u003cbr\u003e\u003cstrong\u003eWarranty registration:\u003c\/strong\u003e Within 45 days of purchase at biasi.co.uk\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Three-phase supply required:\u003c\/strong\u003e This boiler requires a \u003cstrong\u003e400V three-phase (3N∼) supply\u003c\/strong\u003e. It is not compatible with standard single-phase 230V domestic wiring. Verify that a suitable three-phase supply is available at the property before ordering. Wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671; a Part P certificate must be issued. Annual service by a registered electrician is required to maintain the warranty.\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: 30px; height: 30px; 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=\"15\" width=\"15\"\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;\"\u003e25kW Output — Sized for Larger Homes, Multiple Bathrooms and Bath Filling\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAt \u003cstrong\u003e25kW\u003c\/strong\u003e, this is the highest-output electric combi boiler in the Biasi Pro-Electric range. It delivers a continuous \u003cstrong\u003ehot water flow rate of up to 12 L\/min\u003c\/strong\u003e — enough to fill a bath at a usable temperature, supply a power shower, or run multiple outlets simultaneously. The 25kW output also provides the heating capacity for larger homes with four or more bedrooms, multiple bathrooms or higher heat-loss properties. It replaces a gas combi boiler directly, using the same pipework and radiator circuit.\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;\"\u003e25kW\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;\"\u003e12 L\/min 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: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBath filling\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;\"\u003e4+ bedroom homes\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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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;\"\u003eThree-Phase 400V Supply — Unlocks the Full 25kW Rating\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe 20kW and 25kW outputs of the Biasi Pro-Electric range require a \u003cstrong\u003e400V three-phase supply\u003c\/strong\u003e. Single-phase 230V electrical circuits cannot physically supply 25kW continuously — a 25kW single-phase load would require approximately 109A, which exceeds standard domestic metering. Three-phase distribution spreads the load across three phases at approximately \u003cstrong\u003e36A per phase\u003c\/strong\u003e, within standard three-phase supply infrastructure. This boiler is therefore specifically suited to properties that already have a three-phase supply, or where one is being installed as part of a broader electrical upgrade.\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;\"\u003e400V 3-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;\"\u003e36A per 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;\"\u003e3 × 6mm² 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: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e40A 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: #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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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;\"\u003ePower Modulates from 2kW to Full 25kW — Near-100% Efficiency\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe Biasi Pro-Electric modulates output from a minimum of \u003cstrong\u003e2kW up to the full 25kW\u003c\/strong\u003e. In mild weather, the boiler runs at reduced power to match the actual heat loss of the building, rather than cycling on and off at full power. Electric resistance heating converts electricity to heat at \u003cstrong\u003enear-100% efficiency\u003c\/strong\u003e (there are no flue losses, no condensation cycle and no standby pilot flame). This is in contrast to gas boilers, which — even at rated efficiency — lose heat through the flue and condensate circuit.\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;\"\u003e2–25kW modulation\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 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: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue losses\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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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;\"\u003eDrop-In Replacement for Gas Combi Boilers — Same Pipework and Radiators\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe Pro-Electric uses \u003cstrong\u003ethe same flow and return connections as a gas combi boiler\u003c\/strong\u003e (¾″ male heating, ½″ male hot water). It can be connected directly to existing pipework and radiator circuits without modification. The built-in pump, expansion vessel (6L), safety valve and pressure gauge are all pre-fitted — the installation is no more complex than replacing one combi with another. No flue, no gas connection, no combustion air requirements.\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;\"\u003eSame connections as gas combi\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;\"\u003eExisting pipework compatible\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;\"\u003eNo flue needed\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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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 Required — Install Anywhere in the Property\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs an electric boiler, the Pro-Electric \u003cstrong\u003eproduces no combustion gases\u003c\/strong\u003e and requires \u003cstrong\u003eno flue whatsoever\u003c\/strong\u003e. This means it can be sited in any location that meets the physical and electrical access requirements: kitchen, utility room, airing cupboard, loft, basement or any other indoor location. There are no flue route restrictions, no minimum clearance from windows or doors, and no requirement for room ventilation for combustion air.\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;\"\u003eNo gas\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;\"\u003eNo 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;\"\u003eInstall anywhere indoors\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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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;\"\u003eTouchscreen Controls — Radiator and Underfloor Heating Modes\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe digital touchscreen allows adjustment of \u003cstrong\u003eflow temperature from 30°C to 80°C\u003c\/strong\u003e for radiator mode, or \u003cstrong\u003e30°C to 60°C\u003c\/strong\u003e for underfloor heating mode. Summer and winter modes allow hot water only or combined heating and hot water. A \u003cstrong\u003e24-hour timer\u003c\/strong\u003e, child lock, anti-freeze function and fault code display are all built in. Room thermostat input for external control is supported.\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;\"\u003e30–80°C radiator\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;\"\u003e30–60°C 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: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e24hr 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: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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;\"\u003e15 dB Sound Level — Virtually Silent Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe Pro-Electric measures just \u003cstrong\u003e15 dB(A)\u003c\/strong\u003e in operation — quieter than a whisper (which is approximately 30 dB). There is no combustion, no fan, no gas valve noise and no condensate gurgling. The only moving part is the circulating pump. This makes it suitable for installation in bedrooms, living rooms and open-plan spaces without noise disruption.\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;\"\u003e15 dB(A)\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;\"\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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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;\"\u003eThree-Year Warranty — Register Within 45 Days\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eBiasi UK provides a \u003cstrong\u003ethree-year warranty\u003c\/strong\u003e on the Pro-Electric range (excluding damage from human error, natural causes or non-compliance with installation requirements). Warranty activation requires: (1) \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at biasi.co.uk; (2) a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e issued at installation; (3) \u003cstrong\u003eannual service\u003c\/strong\u003e by a registered 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: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e3-year warranty\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;\"\u003eRegister within 45 days\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;\"\u003eAnnual service required\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 stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\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;\"\u003eCombi Fittings Pack Included (Ei1124500) — Everything for a Complete Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThis bundle includes the \u003cstrong\u003eBiasi Pro-Electric Combination Boiler Fittings Pack (Ei1124500)\u003c\/strong\u003e, which provides the ancillary components needed for a code-compliant, complete boiler installation: \u003cstrong\u003efull-bore service valves\u003c\/strong\u003e (isolation for maintenance), and an \u003cstrong\u003eautomatic bypass valve (ABV)\u003c\/strong\u003e (maintains minimum flow when zone valves close). Sourcing these separately would typically add both cost and procurement time to the job.\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;\"\u003eFull-bore service valves\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;\"\u003eAutomatic bypass valve\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;\"\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\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;\"\u003eBIPROELEC25C — Pro-Electric 25kW Combi Boiler Three 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;\"\u003eOutput Power\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25kW\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;\"\u003eModulation Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2kW – 25kW\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;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eElectric combi (heating + 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;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNear 100% (electric resistance — no flue losses)\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 Supply\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 Voltage\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e400V three-phase 50Hz (3N∼)\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;\"\u003e36A\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 Breaker\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e40A MCB\/RCD\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;\"\u003e3 × 6 mm² copper core\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;\"\u003eLeakage Protection Switch\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e≥50A\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;\"\u003eWiring Configuration\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eL1, L2, L3, N + Earth\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;\"\u003eIP \/ Waterproof Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIPX4\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\"\u003eHeating\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;\"\u003eMax Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2.5 bar\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;\"\u003eMin Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 bar\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;\"\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e80°C (radiator mode)\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;\"\u003eMin Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e30°C\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;\"\u003eUnderfloor Heating Mode\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e30°C – 60°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;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; 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: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\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;\"\u003eHot Water Flow Rate\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eUp to 12 L\/min\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 Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e30°C – 60°C\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 Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e½″ male\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 (Hot Water)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eA\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;\"\u003eHeight\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e630 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;\"\u003eWidth\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e380 mm\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;\"\u003eDepth\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230 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;\"\u003eDry Weight\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~25 kg\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eWall-mounted, upright\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;\"\u003eHeating Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾″ male flow and return\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;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; 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: #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;\"\u003e6L integrated\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\"\u003eControls and Sound\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;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDigital touchscreen with LCD 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;\"\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15 dB(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;\"\u003eTimer\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e24-hour built-in timer\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;\"\u003eRoom Thermostat Input\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;\"\u003eAnti-freeze Function\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; 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: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eChild Lock\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: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eIncluded in This Package\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;\"\u003eBoiler\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBiasi Pro-Electric 25kW 3-phase combi (BIPROELEC25C)\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;\"\u003eFittings Pack\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBiasi Combi Fittings Pack Ei1124500: full-bore service valves, ABV\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;\"\u003eAlso Included\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eMounting bracket and hardware, installation manual\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 and Compliance\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\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 years (register within 45 days at biasi.co.uk)\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;\"\u003eWarranty Conditions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePart P certificate required; annual service by registered electrician 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;\"\u003eStandards\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, BS 7671 (IEE Wiring Regs 17th Ed.), BS EN 7593\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;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBiasi UK Ltd, Walsall, UK (est. 1990; parent: Biasi S.p.A., Pordenone, Italy)\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\u003eDoes my property need a three-phase supply for this 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;\"\u003eYes. This boiler requires a \u003cstrong\u003e400V three-phase 50Hz (3N∼) supply\u003c\/strong\u003e. Standard UK domestic properties are supplied on single-phase 230V and will not be compatible without a three-phase upgrade, which requires DNO (Distribution Network Operator) approval and additional electrical work. Properties that already have three-phase supplies include many commercial premises, rural properties with large electrical demands, and some larger new-builds. Check your electricity meter and supply fuse before ordering. If in doubt, contact your DNO or 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\u003eCan this replace my existing gas combi boiler without changing pipework?\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 Biasi Pro-Electric uses \u003cstrong\u003ethe same connection sizes as a standard gas combi boiler\u003c\/strong\u003e: ¾″ male heating flow and return, ½″ male hot water connections, 15mm PRV. It can connect directly to existing pipework and radiators. The system should be flushed (BS 7593) before connection to remove debris. No flue disconnection\/capping is legally required but is recommended for a clean installation.\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 open=\"\"\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 included in the Combi Fittings Pack (Ei1124500)?\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 Biasi Pro-Electric Combination Boiler Fittings Pack (Ei1124500) includes \u003cstrong\u003efull-bore service valves\u003c\/strong\u003e (for isolation during maintenance), and an \u003cstrong\u003eautomatic bypass valve\u003c\/strong\u003e (maintains minimum flow through the boiler when zone valves close, preventing heat build-up). Note that a filling loop is \u003cstrong\u003enot included\u003c\/strong\u003e and Biasi does not recommend one for this boiler — discuss pressurisation method with your installer.\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 is the energy efficiency rated D for heating but A for hot water?\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;\"\u003eErP energy ratings for electric resistance boilers score D for heating because the rating is calculated against a European scale that strongly favours low-temperature heat pumps at the top. An electric boiler that converts electricity to heat at near-100% efficiency scores D because the calculation penalises primary energy conversion (electricity generation losses) rather than the device efficiency itself. The A rating for hot water reflects that the instantaneous hot water production is highly efficient with minimal standby losses. When used with a renewable electricity tariff, the actual carbon footprint is substantially lower than the ErP heating rating implies.\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 annual maintenance is required?\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 Biasi Pro-Electric warranty requires an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e. Service intervals are typically much simpler than gas boilers: there is no burner, flue, heat exchanger, gas valve or ignition system to inspect. A typical annual service covers electrical connections, element resistance checks, flow and pressure settings, and system water quality.\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(220px,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;\"\u003eBiasi Pro-Electric 14kW Single-Phase Combi Boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eSmaller single-phase option for 1–2 bed properties\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;\"\u003eBiasi Pro-Electric 20kW Combi Boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eMid-range 3-phase option for 3–4 bed homes\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;\"\u003eStrom 14.4kW Electric Heat-Only Boiler + 150L Cylinder\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eAlternative electric heat-only system\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;\"\u003eEHC Compact All-in-One Electric System Boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eAlternative electric system boiler range\u003c\/div\u003e\n\u003c\/div\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":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBiasi Pro Electric System Boiler 6kW Single Phase\u003c\/strong\u003e is a compact, efficient electric system boiler designed for integration with indirect hot water cylinders, providing heating and hot water for properties without gas supply.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Biasi Pro-Electric 6kW system boiler is a direct replacement for gas boilers, working with vented or unvented indirect cylinders to meet hot water needs, especially in larger properties with multiple bathrooms. It can integrate with solar PV systems and use timers for off-peak electricity heating. Featuring an integrated pump, expansion vessel, stylish touchscreen control panel, and minimal moving parts, it offers near-silent operation and zero carbon monoxide risk.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue or gas needed:\u003c\/strong\u003e Flexible installation anywhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design:\u003c\/strong\u003e Space-saving with integrated components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Sound pressure level of 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen controls:\u003c\/strong\u003e User-friendly interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar PV compatible:\u003c\/strong\u003e Integrates with renewable energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-peak optimization:\u003c\/strong\u003e Timer-compatible for cost savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero CO emissions:\u003c\/strong\u003e Safe and eco-friendly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp control:\u003c\/strong\u003e Optional connectivity for remote management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Pro-Electric 6kW System Boiler Single Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e 6 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 230V single phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent:\u003c\/strong\u003e 26 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended breaker:\u003c\/strong\u003e 32 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended cable size:\u003c\/strong\u003e 6 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum heating pressure:\u003c\/strong\u003e 2.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum heating pressure:\u003c\/strong\u003e 0.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum flow temperature:\u003c\/strong\u003e 80 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum flow temperature:\u003c\/strong\u003e 30 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy rating (heating):\u003c\/strong\u003e D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound pressure level:\u003c\/strong\u003e 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Electric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Wall-mounted.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 380 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 230 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 630 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry weight:\u003c\/strong\u003e ~20 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties with indirect cylinders, multiple bathrooms, and no gas supply.\u003c\/li\u003e\n\u003cli\u003eSuitable for radiators, taps, showers, and baths when paired with vented\/unvented cylinders.\u003c\/li\u003e\n\u003cli\u003eCompatible with existing pipework and solar PV systems.\u003c\/li\u003e\n\u003cli\u003eHeating connections: 3\/4 inch male; PRV: 15 mm.\u003c\/li\u003e\n\u003cli\u003eInstallation by qualified electricians or heating engineers following Biasi guidelines; requires 26A supply.\u003c\/li\u003e\n\u003cli\u003eWarranty: 3 years.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-section\"\u003e\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":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBiasi Pro Electric System Boiler 8kW Single Phase\u003c\/strong\u003e is a compact, efficient electric system boiler designed for integration with indirect hot water cylinders, providing heating and hot water for properties without gas supply.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Biasi Pro-Electric 8kW system boiler is a direct replacement for gas boilers, working with vented or unvented indirect cylinders to meet hot water needs, especially in larger properties with multiple bathrooms. It can integrate with solar PV systems and use timers for off-peak electricity heating. Featuring an integrated pump, expansion vessel, stylish touchscreen control panel, and minimal moving parts, it offers near-silent operation and zero carbon monoxide risk.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue or gas needed:\u003c\/strong\u003e Flexible installation anywhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design:\u003c\/strong\u003e Space-saving with integrated components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Sound pressure level of 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen controls:\u003c\/strong\u003e User-friendly interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar PV compatible:\u003c\/strong\u003e Integrates with renewable energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-peak optimization:\u003c\/strong\u003e Timer-compatible for cost savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero CO emissions:\u003c\/strong\u003e Safe and eco-friendly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp control:\u003c\/strong\u003e Optional connectivity for remote management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Pro-Electric 8kW System Boiler Single Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e 8 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 230V single phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent:\u003c\/strong\u003e 35 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended breaker:\u003c\/strong\u003e 40 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended cable size:\u003c\/strong\u003e 6 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum heating pressure:\u003c\/strong\u003e 2.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum heating pressure:\u003c\/strong\u003e 0.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum flow temperature:\u003c\/strong\u003e 80 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum flow temperature:\u003c\/strong\u003e 30 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy rating (heating):\u003c\/strong\u003e D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound pressure level:\u003c\/strong\u003e 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Electric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Wall-mounted.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 380 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 230 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 630 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry weight:\u003c\/strong\u003e ~20 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties with indirect cylinders, multiple bathrooms, and no gas supply.\u003c\/li\u003e\n\u003cli\u003eSuitable for radiators, taps, showers, and baths when paired with vented\/unvented cylinders.\u003c\/li\u003e\n\u003cli\u003eCompatible with existing pipework and solar PV systems.\u003c\/li\u003e\n\u003cli\u003eHeating connections: 3\/4 inch male; PRV: 15 mm.\u003c\/li\u003e\n\u003cli\u003eInstallation by qualified electricians or heating engineers following Biasi guidelines; requires 35A supply.\u003c\/li\u003e\n\u003cli\u003eWarranty: 3 years.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63239914520925,"sku":"BIPROELEC8S","price":895.0,"currency_code":"GBP","in_stock":false}],"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 System Boiler 12kW Single Phase","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBiasi Pro Electric System Boiler 12kW Single Phase\u003c\/strong\u003e is a compact, efficient electric system boiler designed for integration with indirect hot water cylinders, providing heating and hot water for properties without gas supply.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Biasi Pro-Electric 12kW system boiler is a direct replacement for gas boilers, working with vented or unvented indirect cylinders to meet hot water needs, especially in larger properties with multiple bathrooms. It can integrate with solar PV systems and use timers for off-peak electricity heating. Featuring an integrated pump, expansion vessel, stylish touchscreen control panel, and minimal moving parts, it offers near-silent operation and zero carbon monoxide risk.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue or gas needed:\u003c\/strong\u003e Flexible installation anywhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design:\u003c\/strong\u003e Space-saving with integrated components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Sound pressure level of 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen controls:\u003c\/strong\u003e User-friendly interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar PV compatible:\u003c\/strong\u003e Integrates with renewable energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-peak optimization:\u003c\/strong\u003e Timer-compatible for cost savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero CO emissions:\u003c\/strong\u003e Safe and eco-friendly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp control:\u003c\/strong\u003e Optional connectivity for remote management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Pro-Electric 12kW System Boiler Single Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e 12 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 230V single phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent:\u003c\/strong\u003e 52 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended breaker:\u003c\/strong\u003e 63 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended cable size:\u003c\/strong\u003e 10 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum heating pressure:\u003c\/strong\u003e 2.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum heating pressure:\u003c\/strong\u003e 0.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum flow temperature:\u003c\/strong\u003e 80 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum flow temperature:\u003c\/strong\u003e 30 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy rating (heating):\u003c\/strong\u003e D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound pressure level:\u003c\/strong\u003e 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Electric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Wall-mounted.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 380 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 230 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 630 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry weight:\u003c\/strong\u003e ~20 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties with indirect cylinders, multiple bathrooms, and no gas supply.\u003c\/li\u003e\n\u003cli\u003eSuitable for radiators, taps, showers, and baths when paired with vented\/unvented cylinders.\u003c\/li\u003e\n\u003cli\u003eCompatible with existing pipework and solar PV systems.\u003c\/li\u003e\n\u003cli\u003eHeating connections: 3\/4 inch male; PRV: 15 mm.\u003c\/li\u003e\n\u003cli\u003eInstallation by qualified electricians or heating engineers following Biasi guidelines; requires 52A supply.\u003c\/li\u003e\n\u003cli\u003eWarranty: 3 years.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63240035172701,"sku":"BIPROELEC12S","price":950.0,"currency_code":"GBP","in_stock":false}],"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":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eThe \u003c\/span\u003e\u003cstrong style=\"font-size: 0.875rem;\"\u003eBiasi Pro Electric System Boiler 16kW Three Phase\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e is a compact, efficient electric system boiler designed for integration with indirect hot water cylinders, providing heating and hot water for properties without gas supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-section\"\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Biasi Pro-Electric 16kW system boiler is a direct replacement for gas boilers, working with vented or unvented indirect cylinders to meet hot water needs, especially in larger properties with multiple bathrooms. It can integrate with solar PV systems and use timers for off-peak electricity heating. Featuring an integrated pump, expansion vessel, stylish touchscreen control panel, and minimal moving parts, it offers near-silent operation and zero carbon monoxide risk.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue or gas needed:\u003c\/strong\u003e Flexible installation anywhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design:\u003c\/strong\u003e Space-saving with integrated components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Sound pressure level of 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen controls:\u003c\/strong\u003e User-friendly interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar PV compatible:\u003c\/strong\u003e Integrates with renewable energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-peak optimization:\u003c\/strong\u003e Timer-compatible for cost savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero CO emissions:\u003c\/strong\u003e Safe and eco-friendly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp control:\u003c\/strong\u003e Optional connectivity for remote management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Pro-Electric 16kW System Boiler Three Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e 16 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 400V three phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent:\u003c\/strong\u003e 23 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended breaker:\u003c\/strong\u003e 32 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended cable size:\u003c\/strong\u003e 3x4 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum heating pressure:\u003c\/strong\u003e 2.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum heating pressure:\u003c\/strong\u003e 0.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum flow temperature:\u003c\/strong\u003e 80 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum flow temperature:\u003c\/strong\u003e 30 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy rating (heating):\u003c\/strong\u003e D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound pressure level:\u003c\/strong\u003e 15 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Electric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Wall-mounted.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 380 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 230 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 630 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry weight:\u003c\/strong\u003e ~20 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties with indirect cylinders, multiple bathrooms, and no gas supply.\u003c\/li\u003e\n\u003cli\u003eSuitable for radiators, taps, showers, and baths when paired with vented\/unvented cylinders.\u003c\/li\u003e\n\u003cli\u003eCompatible with existing pipework and solar PV systems.\u003c\/li\u003e\n\u003cli\u003eHeating connections: 3\/4 inch male; PRV: 15 mm.\u003c\/li\u003e\n\u003cli\u003eInstallation by qualified electricians or heating engineers following Biasi guidelines; requires three-phase supply.\u003c\/li\u003e\n\u003cli\u003eWarranty: 3 years.\u003c\/li\u003e\n\u003c\/ul\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 Instant Hot Water \u0026 Heating SBTP18C","description":"\u003cstyle\u003e\n  .dw-wrap{font-family:inherit;color:inherit;line-height:1.7;font-size:16px}\n  .dw-wrap p,.dw-wrap li,.dw-wrap td,.dw-wrap th{font-size:16px!important;line-height:1.7}\n  .dw-wrap h2{font-size:22px!important;font-weight:700;color:#1a3a5c;border-bottom:3px solid #008377;padding-bottom:6px;margin:2rem 0 1rem;line-height:1.3}\n  .dw-wrap h3{font-size:17px!important;font-weight:700;color:#1a3a5c;margin:1.2rem 0 0.4rem;line-height:1.4}\n  .dw-wrap p{margin:0 0 1rem}\n  .dw-wrap ul{padding-left:1.5rem;margin:0 0 1rem}\n  .dw-wrap ul li{margin-bottom:0.5rem}\n  .dw-badge{display:inline-block;font-size:13px!important;font-weight:700;border-radius:4px;padding:2px 10px;margin-right:5px;margin-bottom:4px;vertical-align:middle}\n  .dw-badge.blue{background:#008377;color:#fff}\n  .dw-badge.navy{background:#1a3a5c;color:#fff}\n  .dw-badge.teal{background:#0d9488;color:#fff}\n  .dw-badge.green{background:#1a7a3c;color:#fff}\n  .dw-badge.grey{background:#555;color:#fff}\n  .dw-intro-box{background:#e0f2fe;border-left:4px solid #008377CF;padding:1.1rem 1.4rem;border-radius:0 6px 6px 0;margin-bottom:1.5rem}\n  .dw-intro-box p{margin:0!important}\n  .dw-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:0.85rem;margin-bottom:1.2rem}\n  .dw-card{background:#e0f2fe;border:1px solid #90caf9;border-radius:6px;padding:1rem 1.1rem;line-height:1.6}\n  .dw-card strong{display:block;color:#1a3a5c;margin-bottom:0.35rem;font-size:16px!important}\n  .dw-info-box{background:#f0fdf4;border:1px solid #86efac;border-radius:6px;padding:1rem 1.2rem;margin:1.2rem 0}\n  .dw-info-box p{margin:0 0 0.5rem!important;color:#065f46;font-weight:700}\n  .dw-comp-box{background:#fff3cd;border:1px solid #ffc107;border-radius:5px;padding:0.9rem 1.1rem;margin:0.8rem 0}\n  .dw-spec-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}\n  .dw-spec-table th{background:#1a3a5c;color:#fff!important;text-align:left;padding:0.7rem 1rem;font-weight:700;font-size:16px!important}\n  .dw-spec-table td{padding:0.6rem 1rem;border-bottom:1px solid #bde0f5;vertical-align:top;font-size:16px!important}\n  .dw-spec-table tr:nth-child(even) td{background:#e0f2fe}\n  .dw-spec-table td:first-child{font-weight:600;color:#111;width:44%}\n  .dw-faq-item{border-bottom:1px solid #bde0f5;padding:0.9rem 0}\n  .dw-faq-item:last-child{border-bottom:none}\n  .dw-faq-item strong{color:#1a3a5c;font-size:16px!important;display:block;margin-bottom:0.3rem}\n  .dw-contents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0.6rem;margin-bottom:1.2rem}\n  .dw-contents-item{background:#f0f9ff;border:1px solid #bde0f5;border-radius:5px;padding:0.6rem 0.9rem;font-size:15px!important}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dw-wrap\"\u003e\n\n  \u003cdiv style=\"margin-bottom:1rem\"\u003e\n    \u003cspan class=\"dw-badge blue\"\u003eSBTP18C\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eStrom\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003e18 kW\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003eElectric Combi\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eThree Phase\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eInstant Hot Water\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eStrom 18kW Electric Combi Boiler – Three Phase (SBTP18C)\u003c\/strong\u003e — High-output electric combi boiler delivering central heating \u0026amp; instant hot water up to 9 l\/min | 18 kW output on 400 V three-phase | Touchscreen controls \u0026amp; LED display | Integrated pump \u0026amp; expansion vessel | No flue, no carbon monoxide risk | Near-silent operation | Solar-compatible \u0026amp; underfloor heating ready | 5-year warranty (registration required) | Ideal for larger homes, multiple bathrooms or high-demand properties\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ Flue-free, emission-free heating \u0026amp; hot water – perfect for larger homes or off-grid properties with three-phase supply\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003eRuns on standard three-phase 400 V supply (32 A breaker per phase, 6 mm² cable recommended). No gas supply or flue needed — zero CO risk. High DHW flow rate suits properties with 2–4 bathrooms or high simultaneous demand. Compatible with solar PV diverters \u0026amp; Economy 10 tariffs for maximum savings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe Strom 18kW Electric Combi Boiler (SBTP18C) is a powerful, all-electric combi unit that provides reliable central heating and instant domestic hot water without the need for a separate cylinder, hot water tank or gas connection. With 18 kW output on three-phase 400 V, it delivers up to 9 litres per minute of hot water at a 30 °C rise — ideal for larger family homes, properties with multiple bathrooms, high-flow showers or demanding simultaneous usage.\u003c\/p\u003e\n\n  \u003cp\u003eFeaturing advanced touchscreen digital controls with LED display, high-efficiency serpentine heating elements, integrated circulation pump and expansion vessel, the boiler operates near-silently (15 dB sound pressure level) thanks to minimal moving parts. No flue or chimney required — completely emission-free and carbon monoxide safe. Fully compatible with solar PV systems (via diverter), underfloor heating, and smart tariffs (Economy 10), it offers a modern, low-maintenance, future-proof heating solution for homes transitioning away from gas or oil, especially those already equipped with three-phase supply.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the Strom 18kW Electric Combi Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstant Hot Water \u0026amp; Heating in One Unit\u003c\/strong\u003e — Combi design eliminates need for hot water cylinder — saves space \u0026amp; installation costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlue-Free \u0026amp; Zero Emissions\u003c\/strong\u003e — No gas, no flue, no CO risk — safe for any property, including new-builds or urban retrofits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNear-Silent Operation\u003c\/strong\u003e — Only 15 dB — quieter than a whisper — ideal for installation near living areas or bedrooms.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchscreen Controls\u003c\/strong\u003e — Intuitive digital interface for precise temperature adjustment, scheduling \u0026amp; status monitoring.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Vessel\u003c\/strong\u003e — All-in-one system — simplifies plumbing \u0026amp; reduces external components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSolar \u0026amp; Economy Tariff Ready\u003c\/strong\u003e — Pair with PV diverter or Economy 10 for significantly reduced running costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5-Year Warranty\u003c\/strong\u003e — Register online for full coverage — long-term peace of mind.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"dw-grid\"\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003e18 kW Output\u003c\/strong\u003ePowerful three-phase performance — suits larger homes \u0026amp; high DHW demand.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eInstant DHW Flow\u003c\/strong\u003eUp to 9 l\/min at 30 °C rise — fast filling baths \u0026amp; powerful showers.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eTouchscreen \u0026amp; LED Display\u003c\/strong\u003eModern digital controls for precise temperature \u0026amp; timer adjustments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/strong\u003eCompact all-in-one design — fewer external parts \u0026amp; easier install.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNo Flue or CO Risk\u003c\/strong\u003eEmission-free electric operation — safe for any property.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNear-Silent Running\u003c\/strong\u003eOnly 15 dB — suitable for quiet environments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eSolar PV Compatible\u003c\/strong\u003eUse with diverter to heat water for free using surplus solar.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"dw-spec-table\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMPN \/ SKU\u003c\/td\u003e\n\u003ctd\u003eSBTP18C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5060797570044\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e18 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e400 V AC, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e26 A per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Breaker\u003c\/td\u003e\n\u003ctd\u003e32 A per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Cable Size\u003c\/td\u003e\n\u003ctd\u003e6 mm² per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax DHW Pressure\u003c\/td\u003e\n\u003ctd\u003e6.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd\u003e80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDHW Flow Rate @ 30 °C Rise\u003c\/td\u003e\n\u003ctd\u003e9 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003eHeating: 3\/4\" Male, PRV: 1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e700 × 425 × 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eErP Rating (Heating \/ DHW)\u003c\/td\u003e\n\u003ctd\u003eD \/ A\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  \u003c\/table\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cdiv class=\"dw-contents-grid\"\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ 1 × Strom 18kW Electric Combi Boiler (SBTP18C)\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Wall fixings \u0026amp; mounting guide\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Installation \u0026amp; user manual\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Installation by qualified electrician\/plumber per BS 7671 \u0026amp; building regulations. Recommended 32 A breaker per phase \u0026amp; 6 mm² cable. Compatible with solar PV diverters, Economy 10 tariffs, underfloor heating \u0026amp; most UK domestic systems. Register online for full 5-year warranty. No flue or gas supply required — zero CO risk.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it need a flue or gas connection?\u003c\/strong\u003e\n    No — 100% electric operation. No flue, no gas supply, no carbon monoxide risk — safe for any property.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat size property is this suitable for?\u003c\/strong\u003e\n    Ideal for larger homes or properties with 2–4 bathrooms and high hot water demand (9 l\/min @ 30 °C rise). For very large properties consider multiple units or higher-output models.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it work with solar panels?\u003c\/strong\u003e\n    Yes — pair with a solar diverter to heat water using surplus PV generation — significantly reduces running costs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow quiet is the boiler?\u003c\/strong\u003e\n    Extremely quiet — only 15 dB sound pressure level — suitable for installation near living areas or bedrooms.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat electrical supply is needed?\u003c\/strong\u003e\n    Three-phase 400 V, 26 A per phase draw. Requires 32 A breaker per phase \u0026amp; minimum 6 mm² cable — consult electrician for load check.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs there a warranty?\u003c\/strong\u003e\n    Yes — 5 years manufacturer warranty (registration required on Strom website). Covers manufacturing defects.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it supply underfloor heating?\u003c\/strong\u003e\n    Yes — fully compatible with underfloor systems (max flow temp 80 °C). Low running costs when paired with Economy tariffs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWho installs it?\u003c\/strong\u003e\n    Qualified electrician \u0026amp; plumber per BS 7671 \u0026amp; building regulations. Full electrical \u0026amp; plumbing checks required before use.\n  \u003c\/div\u003e\n\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 Three Phase Combi E-Boiler - 400V Electric Combi Boiler, Touchscreen, No Flue","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 21kW Three Phase Combi E-Boiler\u003c\/strong\u003e is a compact, high-efficiency electric combi boiler designed for properties without a gas supply, delivering instant hot water and central heating with a 21kW output, integrated pump, expansion vessel, and touchscreen controls.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Strom SBTP21C is a modern three-phase electric combi boiler engineered for seamless integration into existing heating systems. It features a serpentine heating element for rapid response, a full-colour touchscreen for intuitive operation, and no requirement for a flue or gas connection. Perfect for off-grid homes, flats, or properties on Economy 10 tariffs, it provides reliable hot water and space heating with near-silent operation and over 99% efficiency. The boiler includes a built-in pump and expansion vessel, making installation straightforward and space-efficient.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21kW output:\u003c\/strong\u003e Sufficient for heating and instant hot water in larger properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-phase 400V supply:\u003c\/strong\u003e Ideal for high-demand applications like multiple baths and showers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen interface:\u003c\/strong\u003e Simple controls and status display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue required:\u003c\/strong\u003e Can be installed almost anywhere, including cupboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated components:\u003c\/strong\u003e Pump and expansion vessel for complete system readiness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Minimal noise for residential comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency:\u003c\/strong\u003e Over 99% with zero CO2 emissions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SBTP21C – Strom 21kW Three Phase Combi E-Boiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat output:\u003c\/strong\u003e 21 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 400 V, Three Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmps:\u003c\/strong\u003e 32 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin breaker size:\u003c\/strong\u003e 40 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin cable size:\u003c\/strong\u003e 3 x 6 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow rate:\u003c\/strong\u003e Limited by water supply (3-phase recommended for baths).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax heating pressure:\u003c\/strong\u003e 1.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection class:\u003c\/strong\u003e IPX4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e Suitable for domestic hot water and central heating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 700 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 425 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 260 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 29.1 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties off the gas grid, flats, or where traditional boilers cannot be fitted.\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and Economy 10 tariffs for cost savings.\u003c\/li\u003e\n\u003cli\u003eInstallation: Wall-mounted; no flue needed; professional electrician required for three-phase supply.\u003c\/li\u003e\n\u003cli\u003eSupports central heating and domestic hot water; perfect replacement for gas\/oil systems.\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer warranty (extendable to 24 months upon registration).\u003c\/li\u003e\n\u003c\/ul\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 Three Phase Combi E-Boiler - 400V Electric Combi Boiler, Touchscreen, No Flue","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 24kW Three Phase Combi E-Boiler\u003c\/strong\u003e is a compact, high-efficiency electric combi boiler designed for properties without a gas supply, delivering instant hot water and central heating with a 24kW output, integrated pump, expansion vessel, and touchscreen controls.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Strom SBTP24C is a modern three-phase electric combi boiler engineered for seamless integration into existing heating systems. It features a serpentine heating element for rapid response, a full-colour touchscreen for intuitive operation, and no requirement for a flue or gas connection. Perfect for off-grid homes, flats, or properties on Economy 10 tariffs, it provides reliable hot water and space heating with near-silent operation and over 99% efficiency. The boiler includes a built-in pump and expansion vessel, making installation straightforward and space-efficient.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24kW output:\u003c\/strong\u003e Sufficient for heating and instant hot water in larger properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-phase 400V supply:\u003c\/strong\u003e Ideal for high-demand applications like multiple baths and showers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen interface:\u003c\/strong\u003e Simple controls and status display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue required:\u003c\/strong\u003e Can be installed almost anywhere, including cupboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated components:\u003c\/strong\u003e Pump and expansion vessel for complete system readiness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Minimal noise for residential comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency:\u003c\/strong\u003e Over 99% with zero CO2 emissions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SBTP24C – Strom 24kW Three Phase Combi E-Boiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat output:\u003c\/strong\u003e 24 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 400 V, Three Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmps at 230VAC:\u003c\/strong\u003e 36 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin breaker size:\u003c\/strong\u003e 40 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin cable size:\u003c\/strong\u003e 3 x 6 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow rate:\u003c\/strong\u003e Limited by water supply (3-phase recommended for baths).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax heating pressure:\u003c\/strong\u003e 1.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection class:\u003c\/strong\u003e IPX4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e Suitable for domestic hot water and central heating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 700 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 425 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 260 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 29.1 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties off the gas grid, flats, or where traditional boilers cannot be fitted.\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and Economy 10 tariffs for cost savings.\u003c\/li\u003e\n\u003cli\u003eInstallation: Wall-mounted; no flue needed; professional electrician required for three-phase supply.\u003c\/li\u003e\n\u003cli\u003eSupports central heating and domestic hot water; perfect replacement for gas\/oil systems.\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer warranty (extendable to 24 months upon registration).\u003c\/li\u003e\n\u003c\/ul\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=2","provider":"AIZO Quality Heating","version":"1.0","type":"link"}