{"title":"Electric System Boilers | Heating Only — Requires a Separate Hot Water Cylinder","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAn electric system boilers heats water and circulates it around your central heating circuit — radiators, underfloor heating, or both. Unlike a combi boiler, it does \u003cstrong\u003enot\u003c\/strong\u003e produce domestic hot water directly from the tap. It works in conjunction with a \u003cstrong\u003eseparate hot water cylinder\u003c\/strong\u003e (either a direct unvented cylinder with its own immersion heater, or an indirect unvented cylinder heated by the boiler itself via a coil). This is an important distinction that catches many buyers out — if you want instant hot water from a single unit with no cylinder, you want an electric combi boiler instead.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSystem Boiler vs Combi Boiler — Which Do You Need?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe right choice depends on your hot water demand and available space. A \u003cstrong\u003ecombi boiler\u003c\/strong\u003e heats water on demand as it flows through the unit, making it compact and simple — but the flow rate is limited by the boiler's kW output, and it struggles to supply multiple outlets simultaneously. A \u003cstrong\u003esystem boiler with a cylinder\u003c\/strong\u003e stores a larger volume of pre-heated water, meaning you can run multiple showers, baths, and taps at the same time without a drop in performance. For family homes with two or more bathrooms, or any property with higher hot water demand, a system boiler and cylinder combination is almost always the better choice.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWhat Does a System Boiler Actually Do?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe system boiler's job is to heat the central heating circuit and, if paired with an indirect cylinder, to also heat the stored hot water via a coil inside the cylinder. The boiler itself contains a pump, an expansion vessel, and the heating element — meaning the installation is relatively clean, with fewer components needed in the airing cupboard or plant room compared to an older open-vented system. All of the boilers in this range are sealed system (pressurised) units, which means they work with modern unvented cylinders at mains pressure.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003e⚠️ You Will Need a Cylinder — This Is Not Optional\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA system boiler cannot store or deliver domestic hot water on its own. Every installation requires a compatible hot water cylinder. If you want the boiler to heat both the radiators and the hot water cylinder, you need an \u003ca href=\"\/collections\/indirect-unvented-cylinders\"\u003e\u003cstrong\u003eindirect unvented cylinder\u003c\/strong\u003e\u003c\/a\u003e with a coil. If you prefer the cylinder to heat itself independently using its own immersion heater (allowing the boiler to focus purely on heating), a \u003ca href=\"\/collections\/direct-unvented-cylinders\"\u003e\u003cstrong\u003edirect unvented cylinder\u003c\/strong\u003e\u003c\/a\u003e is the alternative. Both approaches are valid — the right choice depends on your system design and whether you want the boiler to manage hot water or not.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSingle Phase vs Three Phase — Electrical Supply\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAs with electric combi boilers, the kW output of a system boiler determines what electrical supply is required. Single-phase models in our range run from \u003cstrong\u003e4kW up to 14.4kW\u003c\/strong\u003e, all suitable for a standard 230V domestic supply provided your consumer unit has sufficient capacity and your installer fits a correctly rated dedicated circuit. At 14.4kW single phase, the draw is approximately 63 amps — requiring a 10mm² cable and a 63A or 80A MCB as a minimum.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFor higher outputs — \u003cstrong\u003e16kW, 18kW, 21kW, 24kW and above\u003c\/strong\u003e — a \u003cstrong\u003ethree-phase 400V supply\u003c\/strong\u003e is required. Three-phase supplies are more common in commercial buildings, newer developments, and rural properties with three-phase grid connections, but are not universally available in domestic settings. Always confirm your supply type with your DNO or electrician before ordering a three-phase model.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFor commercial, industrial, or large residential applications, the \u003cstrong\u003eElterm Commercial range\u003c\/strong\u003e extends up to 48kW on three phase, making it suitable for office buildings, blocks of flats, and larger heating loads.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBrands in This Collection\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOur electric system boiler range includes models from \u003cstrong\u003eEHC\u003c\/strong\u003e (SlimJim flow boiler and Comet PV with solar PV integration), \u003cstrong\u003eStrom\u003c\/strong\u003e (single and three phase with touchscreen controls), \u003cstrong\u003eHeatrae Sadia\u003c\/strong\u003e (Amptec — a long-established name in electric flow boilers), \u003cstrong\u003eBiasi Pro\u003c\/strong\u003e, \u003cstrong\u003eE.C.A Arceus\u003c\/strong\u003e, and \u003cstrong\u003eElterm\u003c\/strong\u003e (covering both domestic and commercial three-phase applications). All are wall-mounted, require no flue, and are 100% efficient at point of use.\u003c\/p\u003e\n\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eBrowse the full range below, or contact our team for help matching the right boiler output and cylinder to your property's heating and hot water requirements.\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-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-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 400V - SBTP18S No Flue Serpentine Heat Exchanger","description":"\u003c!-- SEO Product Name: Strom 18kW Electric System Boiler Three Phase 400V - SBTP18S No Flue Serpentine Heat Exchanger --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 18kW Electric System Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP18S\u003c\/strong\u003e) is engineered for large homes and commercial premises needing robust, high-output central heating without a gas or oil supply. It runs central heating only, paired with an indirect hot water cylinder, and uses Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e to spread heat evenly across the whole element surface, avoiding the hotspots that shorten the life of a conventional single-strand heating rod.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, full-colour touchscreen controls, and \u003cstrong\u003ezero on-site carbon monoxide emissions\u003c\/strong\u003e, this boiler needs no flue at all, making it a practical option for properties off the gas grid or where flueing isn't feasible. Running at \u003cstrong\u003e99%+ efficiency\u003c\/strong\u003e with self-modulating output down to as little as 1kW, it is designed to run near-silently and cost-effectively on Economy 10 and similar time-of-use tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e18 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e27 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e registered with a competent persons scheme, in accordance with \u003cstrong\u003eBS 7671 (IEE Wiring Regulations)\u003c\/strong\u003e. An electrical installation certificate and a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for any new boiler circuit, and this documentation is also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Is Essential\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eStrom advise that a proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e is carried out before purchase. Electric boilers are 100% efficient at the point of use, so a straight like-for-like swap with an older gas or oil boiler will typically \u003cstrong\u003eoversize\u003c\/strong\u003e the unit. Part L 2022 of the Building Regulations requires that boilers are not significantly oversized for the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eSystem Boiler, Not Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003eheating-only system boiler\u003c\/strong\u003e: hot water is provided separately via a vented or unvented indirect hot water cylinder connected to the boiler's heating circuit, not by the boiler itself. If instant combination hot water and heating from one unit is needed, the equivalent Strom Combi Boiler range should be considered instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat is transferred evenly across the \u003cstrong\u003ewhole surface area\u003c\/strong\u003e of the element rather than at isolated hot points, speeding up heat-up time and reducing limescale build-up that would otherwise reduce performance over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMultiple Independent Heating Strands\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWhere many competing boilers rely on a single heating strand for all their output, Strom's element uses \u003cstrong\u003emultiple strands\u003c\/strong\u003e, each independently controlled, spreading electrical stress and enabling \u003cstrong\u003eself-modulation down to as little as 1kW\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eWater-Isolated Heating Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe heating strands are kept \u003cstrong\u003ephysically separate from the system water\u003c\/strong\u003e, sharply reducing the corrosion that shortens the life of conventional immersion-style heating elements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSingle-Unit Replaceable Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUnlike competitor designs that bury an element inside a small internal tank, Strom's heat exchanger is a \u003cstrong\u003esingle replaceable unit\u003c\/strong\u003e, simplifying any future servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculation pump and expansion vessel are built into the boiler casing\u003c\/strong\u003e, reducing the number of separate components an installer needs to source, fit and commission.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen Control With LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA full \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e displays live flow temperature, clock, and system status, with clear icons for ignition, pump running, frost protection and thermostat demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBTP18S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060797570166\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric System Boiler (heating only)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e18 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e27 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 4mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCable Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eHigh-temperature flexible multi-strand cable (e.g. HO7) recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male (flexi-hoses recommended over irons)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eApprox. 20kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible Hot Water\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVented or unvented indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar panel diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler provide hot water as well as heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBTP18S is a \u003cstrong\u003esystem boiler for central heating only\u003c\/strong\u003e. Hot water must be provided by connecting a vented or unvented indirect hot water cylinder to the boiler's heating circuit.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a flue for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. As an all-electric boiler, the SBTP18S produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and requires no flue, chimney or external venting of any kind.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size breaker and cable does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom's specification calls for a \u003cstrong\u003e27A rated current\u003c\/strong\u003e, a minimum \u003cstrong\u003e32A breaker\u003c\/strong\u003e and a minimum \u003cstrong\u003e3 x 4mm² cable\u003c\/strong\u003e. An electrician should always confirm the correct breaker and cable size on site, since supply voltage can vary property to property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this boiler suitable for a mid-size or large home?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe 18kW output sits at the entry point of Strom's three-phase system boiler range, suiting properties with a heating demand between the single-phase 14.4kW model and the larger 21kW and 24kW three-phase options. A proper heat loss calculation should confirm the correct size for any given property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs professional installation required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes. Installation must be carried out by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e in line with BS 7671 wiring regulations, with an electrical installation certificate and Part P certificate provided as a condition of both building regulations compliance and the manufacturer's warranty.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat warranty does this boiler come with?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom boilers are supplied with an out-of-box warranty that can be extended by completing product registration within 45 days of purchase; warranty duration can vary by model, supplier or promotional package, so the registration documentation supplied with the unit should be checked for exact terms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954626634077,"sku":"SBTP18S","price":1270.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_b30d133a-aad9-4639-b733-3f065a976af1.png?v=1751974183"},{"product_id":"strom-21kw-electric-system-boiler-three-phase","title":"Strom 21kW Electric System Boiler Three Phase 400V - SBTP21S No Flue Serpentine Heat Exchanger for Large Homes","description":"\u003c!-- SEO Product Name: Strom 21kW Electric System Boiler Three Phase 400V - SBTP21S No Flue Serpentine Heat Exchanger for Large Homes --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 21kW Electric System Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP21S\u003c\/strong\u003e) sits at the top end of Strom's mid-range output, built for large homes and commercial buildings with high-demand heating needs. It runs central heating only, paired with a vented or unvented indirect hot water cylinder, and uses Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e to spread heat evenly across the whole element surface rather than concentrating it at a single hotspot-prone heating rod.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eFeaturing an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a full-colour touchscreen control panel, and \u003cstrong\u003ezero on-site carbon monoxide emissions\u003c\/strong\u003e, the SBTP21S needs no flue and is a future-proof choice for electric central heating. At \u003cstrong\u003e99%+ efficiency\u003c\/strong\u003e with self-modulating output down to as little as 1kW, it is designed to run near-silently and cost-effectively on Economy 10 and similar time-of-use electricity tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e21 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e32 A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eQualified Electrician Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e registered with a competent persons scheme, in accordance with \u003cstrong\u003eBS 7671 (IEE Wiring Regulations)\u003c\/strong\u003e. An electrical installation certificate and a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for any new boiler circuit, and this documentation is also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCorrect Sizing Is Essential\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eStrom advise that a proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e is carried out before purchase. Electric boilers are 100% efficient at the point of use, so a straight like-for-like swap with an older gas or oil boiler will typically \u003cstrong\u003eoversize\u003c\/strong\u003e the unit. Part L 2022 of the Building Regulations requires that boilers are not significantly oversized for the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eSystem Boiler, Not Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003eheating-only system boiler\u003c\/strong\u003e: hot water is provided separately via a vented or unvented indirect hot water cylinder connected to the boiler's heating circuit, not by the boiler itself. If instant combination hot water and heating from one unit is needed, the equivalent Strom Combi Boiler range should be considered instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHeat is transferred evenly across the \u003cstrong\u003ewhole surface area\u003c\/strong\u003e of the element rather than at isolated hot points, speeding up heat-up time and reducing limescale build-up that would otherwise reduce performance over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMultiple Independent Heating Strands\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWhere many competing boilers rely on a single heating strand for all their output, Strom's element uses \u003cstrong\u003emultiple strands\u003c\/strong\u003e, each independently controlled, spreading electrical stress and enabling \u003cstrong\u003eself-modulation down to as little as 1kW\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eWater-Isolated Heating Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe heating strands are kept \u003cstrong\u003ephysically separate from the system water\u003c\/strong\u003e, sharply reducing the corrosion that shortens the life of conventional immersion-style heating elements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSingle-Unit Replaceable Element\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUnlike competitor designs that bury an element inside a small internal tank, Strom's heat exchanger is a \u003cstrong\u003esingle replaceable unit\u003c\/strong\u003e, simplifying any future servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculation pump and expansion vessel are built into the boiler casing\u003c\/strong\u003e, reducing the number of separate components an installer needs to source, fit and commission.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen Control With LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA full \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e displays live flow temperature, clock, and system status, with clear icons for ignition, pump running, frost protection and thermostat demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSBTP21S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e5060797570173\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eElectric System Boiler (heating only)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e21 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCable Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eHigh-temperature flexible multi-strand cable (e.g. HO7) recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Circuit\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMin. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3\/4\" Male (flexi-hoses recommended over irons)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eApprox. 20kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible Hot Water\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVented or unvented indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSolar panel diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler provide hot water as well as heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SBTP21S is a \u003cstrong\u003esystem boiler for central heating only\u003c\/strong\u003e. Hot water must be provided by connecting a vented or unvented indirect hot water cylinder to the boiler's heating circuit.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a flue for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. As an all-electric boiler, the SBTP21S produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and requires no flue, chimney or external venting of any kind.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size breaker and cable does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom's specification calls for a \u003cstrong\u003e32A rated current\u003c\/strong\u003e, a minimum \u003cstrong\u003e40A breaker\u003c\/strong\u003e and a minimum \u003cstrong\u003e3 x 6mm² cable\u003c\/strong\u003e. An electrician should always confirm the correct breaker and cable size on site, since supply voltage can vary property to property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow does this compare to the 24kW model?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe SBTP21S sits just below the range-topping 24kW SBTP24S. Choosing between them comes down to the property's calculated heat loss; Strom recommend against oversizing, so the smaller of two suitable outputs is normally the better choice.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs professional installation required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes. Installation must be carried out by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e in line with BS 7671 wiring regulations, with an electrical installation certificate and Part P certificate provided as a condition of both building regulations compliance and the manufacturer's warranty.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat warranty does this boiler come with?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eStrom boilers are supplied with an out-of-box warranty that can be extended by completing product registration within 45 days of purchase; warranty duration can vary by model, supplier or promotional package, so the registration documentation supplied with the unit should be checked for exact terms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954652324189,"sku":"SBTP21S","price":1370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_c46192ba-299f-4997-a7e8-2b1ecbe0341e.png?v=1751974101"},{"product_id":"strom-24kw-electric-system-boiler-three-phase","title":"Strom 24kW Electric System Boiler Three Phase 400V - SBTP24S\/WBTP24S No Flue Serpentine Element Heat Exchanger","description":"\u003c!-- SEO Product Name: Strom 24kW Electric System Boiler Three Phase 400V - SBTP24S\/WBTP24S No Flue Serpentine Element Heat Exchanger --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eStrom 24kW Electric System Boiler\u003c\/strong\u003e (three-phase, model \u003cstrong\u003eSBTP24S\u003c\/strong\u003e) is the largest output in Strom's system boiler range, designed for large homes and commercial premises with substantial heating demand. It runs central heating only, paired with a vented or unvented indirect hot water cylinder, and uses Strom's patented \u003cstrong\u003eserpentine heat exchanger\u003c\/strong\u003e to spread heat evenly across the whole element surface rather than relying on a single hotspot-prone heating rod.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eBuilt with an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a full-colour touchscreen control panel, and \u003cstrong\u003ezero on-site emissions\u003c\/strong\u003e, this boiler needs no flue and produces no carbon monoxide, making it well suited to properties off the gas grid, flats, and plant rooms where flueing simply isn't possible. At \u003cstrong\u003e99%+ efficiency\u003c\/strong\u003e and with self-modulating output down to as little as 1kW, it is engineered to run quietly and cost-effectively on Economy 10 and similar time-of-use electricity tariffs.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e24 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e400V 3PH\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e36 A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eRated Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e99%+\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e15 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eSound Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eWarranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FDECEC; border-left: 4px solid #D32F2F; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #d32f2f; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eQualified Electrician Required\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e registered with a competent persons scheme, in accordance with \u003cstrong\u003eBS 7671 (IEE Wiring Regulations)\u003c\/strong\u003e. An electrical installation certificate and a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e are legally required for any new boiler circuit, and this documentation is also a condition of the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #e0942a; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eCorrect Sizing Is Essential\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eStrom advise that a proper \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e is carried out before purchase. Electric boilers are 100% efficient at the point of use, so a straight like-for-like swap with an older gas or oil boiler will typically \u003cstrong\u003eoversize\u003c\/strong\u003e the unit. Part L 2022 of the Building Regulations requires that boilers are not significantly oversized for the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #008377cf; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eSystem Boiler, Not Combi\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis is a \u003cstrong\u003eheating-only system boiler\u003c\/strong\u003e: hot water is provided separately via a vented or unvented indirect hot water cylinder connected to the boiler's heating circuit, not by the boiler itself. If instant combination hot water and heating from one unit is needed, the equivalent Strom Combi Boiler range should be considered instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003ePatented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eHeat is transferred evenly across the \u003cstrong\u003ewhole surface area\u003c\/strong\u003e of the element rather than at isolated hot points, speeding up heat-up time and reducing limescale build-up that would otherwise reduce performance over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eMultiple Independent Heating Strands\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eWhere many competing boilers rely on a single heating strand for all their output, Strom's element uses \u003cstrong\u003emultiple strands\u003c\/strong\u003e, each independently controlled, spreading electrical stress and enabling \u003cstrong\u003eself-modulation down to as little as 1kW\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eWater-Isolated Heating Element\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eThe heating strands are kept \u003cstrong\u003ephysically separate from the system water\u003c\/strong\u003e, sharply reducing the corrosion that shortens the life of conventional immersion-style heating elements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eSingle-Unit Replaceable Element\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eUnlike competitor designs that bury an element inside a small internal tank, Strom's heat exchanger is a \u003cstrong\u003esingle replaceable unit\u003c\/strong\u003e, simplifying any future servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA \u003cstrong\u003ecirculation pump and expansion vessel are built into the boiler casing\u003c\/strong\u003e, reducing the number of separate components an installer needs to source, fit and commission.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eTouchscreen Control With LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA full \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e displays live flow temperature, clock, and system status, with clear icons for ignition, pump running, frost protection and thermostat demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eSBTP24S \/ WBTP24S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eEAN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e5060438332062\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eElectric System Boiler (heating only)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eHeating Output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e24 kW (81,900 BTU)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eHeating Element\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003ePatented multi-strand serpentine heat exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e99%+, zero carbon monoxide at point of use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eSound Pressure Level\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e15 dB (near-silent operation)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003ePhase\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eThree-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e400V AC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eRated Current\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e36 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMinimum Recommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMinimum Recommended Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3 x 6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCable Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eHigh-temperature flexible multi-strand cable (e.g. HO7) recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eHeating Circuit\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMax. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e1.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMin. Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMax. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMin. Flow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e20°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eHeating Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3\/4\" Male (flexi-hoses recommended over irons)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e1\/2\" Female\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e700 x 425 x 260mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eApprox. 20kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWall-mounted, integrated bracket, upright position only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCompatible Hot Water\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eVented or unvented indirect cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCompatible With\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eSolar panel diverters, underfloor heating, Economy 10 tariffs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler provide hot water as well as heating?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eNo. The SBTP24S is a \u003cstrong\u003esystem boiler for central heating only\u003c\/strong\u003e. Hot water must be provided by connecting a vented or unvented indirect hot water cylinder to the boiler's heating circuit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDo I need a flue for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eNo. As an all-electric boiler, the SBTP24S produces \u003cstrong\u003ezero carbon monoxide\u003c\/strong\u003e at the point of use and requires no flue, chimney or external venting of any kind.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat size breaker and cable does this boiler need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eStrom's specification calls for a \u003cstrong\u003e36A rated current\u003c\/strong\u003e, a minimum \u003cstrong\u003e40A breaker\u003c\/strong\u003e and a minimum \u003cstrong\u003e3 x 6mm² cable\u003c\/strong\u003e. An electrician should always confirm the correct breaker and cable size on site, since supply voltage can vary property to property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eCan this boiler be paired with solar panels?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eYes, the boiler is \u003cstrong\u003ecompatible with solar panel systems\u003c\/strong\u003e and can be integrated into a wider renewable energy setup, alongside compatibility with underfloor heating and Economy 10-style tariffs.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eIs professional installation required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eYes. Installation must be carried out by a \u003cstrong\u003equalified, competent electrician\u003c\/strong\u003e in line with BS 7671 wiring regulations, with an electrical installation certificate and Part P certificate provided as a condition of both building regulations compliance and the manufacturer's warranty.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat warranty does this boiler come with?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eStrom boilers are supplied with an out-of-box warranty that can be extended by completing product registration within 45 days of purchase; warranty duration can vary by model, supplier or promotional package, so the registration documentation supplied with the unit should be checked for exact terms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954664710493,"sku":"SBTP24S","price":1430.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_25a78325-8c0e-4c3f-88f0-a56b5d6169ee.png?v=1751974048"},{"product_id":"thermosphere-electric-system-boiler-with-pum-single-and-three-phase","title":"ThermoSphere Electric System Boiler with Pump | Single and Three Phase 230\/400V","description":"\u003c!-- SEO Product Name: ThermoSphere Electric System Boiler with Pump | Single and Three Phase 230\/400V --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cb\u003eThermoSphere Electric System Boiler\u003c\/b\u003e is a slimline, wall-mounted electric flow boiler with an \u003cb\u003eintegrated circulation pump\u003c\/b\u003e, built for central heating in properties without a mains gas supply. Available in outputs from \u003cb\u003e4.5kW to 24kW\u003c\/b\u003e, it suits everything from small flats to larger commercial spaces, running on either a single-phase (230V) or three-phase (400V) electrical supply.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith \u003cb\u003e3-stage heating elements\u003c\/b\u003e for modulated output and no flue, gas connection or annual servicing requirement, it's a straightforward retrofit for radiator or wet underfloor heating systems, and integrates with indirect unvented cylinders for hot water.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e4.5–24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eOutput Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e230\/400V\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eVoltage\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e65°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eMax Flow Temp\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e2 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eMax System Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e100%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eElectric-to-Heat Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.92;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #D32F2F; background:#FDECEC; padding:14px 18px; margin:0 0 20px 0; border-radius:0 6px 6px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#D32F2F; font-size:14px; text-transform:uppercase; letter-spacing:0.04em; margin:0 0 6px 0;\"\u003eElectrical Supply Requirement\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.6; color:#2B2B2B;\"\u003e\n\u003cb\u003eModels up to and including 15kW\u003c\/b\u003e are fitted with a jumper pin, allowing single-phase (230V) connection out of the box; removing the jumper and wiring each live phase separately enables three-phase (400V) operation. \u003cb\u003e18kW models and above are designed for three-phase supply only.\u003c\/b\u003e Always confirm supply capacity with a qualified electrician before specifying.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eNo Flue or Gas Supply Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eRuns on \u003cb\u003e100% electric operation\u003c\/b\u003e with zero on-site emissions, making it a straightforward option for off-grid properties or all-electric new builds without the need for flue routing or gas safety certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eSingle or Three-Phase Flexibility\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eConnects to either a \u003cb\u003e230V single-phase or 400V three-phase\u003c\/b\u003e supply depending on model and site electrical capacity, with a jumper-pin arrangement simplifying single-phase wiring on smaller models.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003e3-Stage Heating Elements\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003e\n\u003cb\u003eMulti-stage element modulation\u003c\/b\u003e improves comfort and electrical load management compared with a simple on\/off single-element design, reducing peak demand spikes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eIntegrated Circulation Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eUnlike the heat-only variant, this \u003cb\u003esystem boiler includes a built-in circulation pump\u003c\/b\u003e, simplifying the installation kit needed for radiator or underfloor heating circuits.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eCompatible With Indirect Cylinders\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003ePairs with \u003cb\u003eindirect unvented hot water cylinders\u003c\/b\u003e for domestic hot water, alongside radiator or wet underfloor heating circuits on the same appliance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FBFB; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:15px; margin:0 0 8px 0;\"\u003eSmart Control Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; line-height:1.6; color:#2B2B2B;\"\u003eCompatible with \u003cb\u003ethermostats, programmers and smart heating controls\u003c\/b\u003e, allowing zoned or scheduled operation on top of the boiler's own safety cut-outs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:0 0 24px 0;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003ePower Output\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eVoltage\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eMax Current\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#ffffff; font-size:13px; padding:10px 12px; text-align:left; text-transform:uppercase; letter-spacing:0.04em;\"\u003eWeight\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P4.5\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e4.5 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈21 A\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P6\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e6.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈27 A\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P9\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e9.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈40 A\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P12\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e12.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈53 A\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P15\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e400V (3-phase)\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈22 A per phase\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P18\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e18.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e400V (3-phase only)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈26 A per phase\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003eTSEFB-P24\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e24.0 kW\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e400V (3-phase only)\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e≈35 A per phase\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e755 x 215 x 150mm\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #D9EDEA;\"\u003e15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:0 0 24px 0;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003ePerformance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eOutput Range\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e4.5kW to 24kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e100% electric-to-heat conversion (no flue losses)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eEfficiency Class\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003eElectrical \u0026amp; Pressure\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eVoltage\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e230\/400V (single or three-phase, model dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eMax System Pressure\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e2.0 bar (unit); 3 bar per manufacturer datasheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eProtection Rating\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eIP22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eIEC Protection Class\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eClass I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003eIncluded Components\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eCirculation Pump\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eIntegrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e7 litre (spec varies with model size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eSafety Features\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eHigh-limit thermostat, low water protection, pressure relief valve, overheat cut-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:10px 14px;\"\u003eCompliance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eRegulatory Compliance\u003c\/td\u003e\n\u003ctd style=\"background:#E6F4F3; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003eErP Lot20, UK electrical installation standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; font-weight:600; color:#2B2B2B; font-size:14px; width:45%; border-bottom:1px solid #D9EDEA;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff; padding:9px 14px; color:#2B2B2B; font-size:14px; border-bottom:1px solid #D9EDEA;\"\u003e2–5 years depending on registration and installer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eCan this boiler run on a standard domestic single-phase supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eYes, for models up to and including 15kW. These ship with a jumper pin joining the three live terminals for single-phase (230V) connection. Models of 18kW and above require a three-phase (400V) supply.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eHow do I size the right output for my property?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eA rough guide is to allow 1.5kW per radiator, so 4 radiators would suggest a 6kW boiler and 6 radiators would suggest a 9kW unit. Ceiling height, insulation standard and glazing type also affect the real-world demand, so a full heat loss calculation is recommended for larger properties.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eDoes this model include a pump?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eYes — this is the System Boiler variant with an integrated circulation pump, as distinct from ThermoSphere's Heat Only Boiler which is supplied without a pump for systems where one is already present.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eCan it heat both radiators and a hot water cylinder?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eYes, the system boiler is compatible with wet underfloor heating and radiator circuits, and can be paired with an indirect unvented cylinder to provide domestic hot water alongside space heating.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:8px; margin:0 0 10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; padding:12px 16px; font-weight:700; font-size:14.5px; cursor:pointer; list-style:none;\"\u003eWhat ongoing maintenance does it need?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.65; color:#2B2B2B; background:#ffffff;\"\u003eElectric boilers have no combustion process, flue, or annual gas safety inspection requirement, which significantly reduces routine maintenance and callout costs compared with a gas system boiler.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"ThermoSphere","offers":[{"title":"4.5KW 230\/400V","offer_id":58037323628893,"sku":"TSEFB-P4.5","price":1030.0,"currency_code":"GBP","in_stock":true},{"title":"6KW 230\/400V","offer_id":58037323661661,"sku":"TSEFB-P6","price":1100.0,"currency_code":"GBP","in_stock":true},{"title":"9KW 230\/400V","offer_id":58037323694429,"sku":"TSEFB-P9","price":1230.0,"currency_code":"GBP","in_stock":true},{"title":"12KW 230\/400V","offer_id":58037323727197,"sku":"TSEFB-P12","price":1300.0,"currency_code":"GBP","in_stock":true},{"title":"15KW 400V","offer_id":58037323759965,"sku":"TSEFB-P15","price":1350.0,"currency_code":"GBP","in_stock":true},{"title":"18KW 400V","offer_id":58037323792733,"sku":"TSEFB-P18","price":1450.0,"currency_code":"GBP","in_stock":true},{"title":"24KW 400V","offer_id":58037323825501,"sku":"TSEFB-P24","price":1550.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ThermoSphereTSEFBP-ElectricSystemFlowBoilerwithpump_jpg.jpg?v=1752676272"},{"product_id":"elterm-commercial-electric-boiler-range-high-power-system-boilers","title":"Elterm Battalion Commercial Electric Boiler - 30-48kW 3-Phase System Boiler","description":"\u003cdiv style=\"font-size: 16px; line-height: 1.6; max-width: 900px; margin: 0 auto; color: #1a1a1a; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"margin: 0 0 22px 0;\"\u003eThe \u003cstrong\u003eElterm Battalion (AsBIII)\u003c\/strong\u003e is a \u003cstrong\u003ecommercial electric central-heating boiler\u003c\/strong\u003e built for continuous industrial duty, available in four factory outputs — \u003cstrong\u003e30kW, 36kW, 42kW and 48kW\u003c\/strong\u003e — all running on a \u003cstrong\u003e400V three-phase\u003c\/strong\u003e supply. It uses industrial-grade solid-state relay switching and \u003cstrong\u003ethree-stage PID power modulation\u003c\/strong\u003e to bring a building up to temperature smoothly rather than in full-power bursts, and it's \u003cstrong\u003ePV-ready\u003c\/strong\u003e, so it can throttle its own draw to cooperate with an on-site solar installation. A volt-free switching contact for a second heat source makes it equally suited as the primary boiler for a commercial building or as a \u003cstrong\u003ebackup\/peak source alongside a heat pump or gas boiler\u003c\/strong\u003e. Units can be \u003cstrong\u003ecascaded in parallel for outputs up to 1.5MW\u003c\/strong\u003e, and each boiler is configured to order with a typical \u003cstrong\u003elead time of 5–7 working days\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 -4px 22px -4px;\"\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e30–48kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003ePower range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e~99.5%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eElectric-to-heat efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e400V 3-Phase\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003ePower supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e95°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eMax C.H. flow temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e1.5MW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eCascade capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #f0faf9; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2; color: #005c54;\"\u003e5–7 Days\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12.5px; color: #3d5c58; margin-top: 4px;\"\u003eTypical lead time\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #C0392B; background: #FDEDEC; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003eQualified Installation Required\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eElectrical connection, commissioning and any work carried out with the casing removed must be done by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e in accordance with UK wiring regulations (BS 7671) and Part P. Adequate overcurrent and residual current (RCD) protection is mandatory, and the installation must include a means of disconnection at all poles with a contact gap of at least 3mm.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #B7791F; background: #FEF6E7; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #b7791f;\"\u003eNo Expansion Vessel Supplied — Model \u0026amp; Naming Notes\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eThe Battalion (AsBIII) range is supplied \u003cstrong\u003ewithout an expansion vessel, safety valve or safety group\u003c\/strong\u003e. On a sealed\/closed heating system these must be sized for the installation and fitted by the installer before commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #B7791F; background: #FEF6E7; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #b7791f;\"\u003eBuilt to Order — Customisation \u0026amp; Lead Time\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eThis range is configured to order: choose your 30\/36\/42\/48kW output, add the optional \u003cstrong\u003eD.H.W. priority pack\u003c\/strong\u003e, or cascade multiple units for outputs above 48kW. Typical lead time is \u003cstrong\u003e5–7 working days\u003c\/strong\u003e. Contact us for a tailored quote on cascade or multi-unit schemes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #008377; background: #f0faf9; padding: 12px 16px; margin: 0 0 16px 0; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #008377;\"\u003ePV-Ready \u0026amp; Heat Pump Cooperation\u003c\/strong\u003e\n\u003cdiv style=\"margin-top: 6px;\"\u003eA built-in energy counter and adjustable maximum-power lock let the boiler limit its own draw so it preferentially uses available solar generation before pulling from the grid. A volt-free switching contact can also hand control to a second heat source — useful where this boiler backs up a heat pump or bridges a gap before a gas connection is available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 -6px 22px -6px;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eIndustrial SSR Switching\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eSolid-state relays replace mechanical contactors, so the frequent on\/off cycling of continuous commercial duty doesn't wear down physical contacts — a key reason this range is rated for industrial and continuous operation rather than domestic-only use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eThree-Stage PID Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eEach output splits its heater bank into three roughly equal stages (for example 16-16-16kW on the 48kW unit) and uses PID logic to bring the system to temperature progressively, cutting short-cycling and reducing the size of the electrical demand spike at start-up.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eEqual Phase Loading\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eHeater banks are wired so each of the three supply phases carries a matching share of the load, keeping the incoming three-phase supply balanced rather than skewed onto a single leg — important for larger commercial connections where phase imbalance can trip protection or draw penalties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eBivalent Heat-Source Switching\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eA volt-free contact disconnects a second heat source (such as a gas boiler) the moment the electric boiler switches on, and reconnects it when the electric boiler switches off — the mechanism behind its role as a heat pump or gas boiler backup.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eCascade-Ready Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eMultiple Battalion units can be linked and sequenced together, which is how Elterm rates this range for combined outputs of up to 1.5MW — useful once a single building's demand outgrows the 48kW ceiling of one unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; border-bottom: 2px solid #008377CF; padding-bottom: 8px; margin-bottom: 8px;\"\u003eWatch Dog \u0026amp; Anti-Stop Protection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #333;\"\u003eA processor monitoring routine, quadruple overheat cut-out and a periodic anti-seize pump run protect the unit through long, unattended commercial operating cycles rather than relying on manual checks.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin: 0 0 8px 0;\"\u003eModel comparison — all variants 400V 3-phase, 50Hz\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 22px 0;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; min-width: 520px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eElterm Code\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eRated Output\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eHeater Configuration\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eModulation Stages\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eFuse Protection\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eSupply Cable\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116030\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e6 × 3kW + 6 × 2kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e10-10-10kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 50A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 16mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116036\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12 × 3kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12-12-12kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 63A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 16mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 42kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116042\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e42kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e6 × 4kW + 6 × 3kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e14-14-14kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 80A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 25mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBattalion 48kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e116048\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e48kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12 × 4kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e16-16-16kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 × 80A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5 × 25mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin: 0 0 8px 0;\"\u003eGeneral specification — common across all outputs\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 22px 0;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; min-width: 520px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCommercial electric central-heating boiler (space heating only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eControl\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eIndustrial Basic LED automation, PID regulator, 3-stage output modulation (33\/66\/100%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eElectric-to-heat efficiency\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eApprox. 99.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eMax C.H. flow temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eUp to 95°C (industrial series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eTemperature setting range\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5–95°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eD (ErP space-heater scale, spectrum A+++ to D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCabinet dimensions (W × H)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e410mm × 680mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003ePipework connections\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e2 × 1\" BSP external thread (flow \u0026amp; return)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCable entry\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eØ29.8mm, from the top or rear of the casing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCirculating pump\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eFactory-fitted electronic pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eExpansion vessel \/ safety group\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eNot supplied — must be provided by the installer on closed systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eOptional D.H.W. pack\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3-way D.H.W. priority valve + cylinder sensor + activation code (code 100003); requires a separate cylinder with coil, min. 12kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCascade capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eMultiple units may be cascaded for a combined output of up to 1.5MW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eCompliance\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEcodesign 2009\/125\/EU, RoHS 2011\/65\/EU, EMC 2014\/30\/EU, Low Voltage 2014\/35\/EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e3 years (36 months) when registered at eltermlondon.co.uk within 30 days of installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eLead time\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e5–7 working days (configured to order)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin: 0 0 8px 0;\"\u003eSizing guide by building floor area (manufacturer reference — outputs above 48kW require cascaded units)\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 22px 0;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; min-width: 520px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003eInsulation standard\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e250m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e300m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e400m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e500m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e600m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e700m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e800m²\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #ffffff; text-align: left; padding: 10px 12px; font-size: 13.5px; white-space: nowrap;\"\u003e1000m²\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEnergy-efficient (20–25cm insulation, A+\/A)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e12kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e15kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e18kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e24kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e24kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e42kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #eaf6f5;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eStandard (10–15cm insulation, B\/C)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e18kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e24kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e42kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e54kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e60kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e72kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #ffffff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003eEnergy-intensive (0–5cm insulation, D\/E)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e30kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e36kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e48kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e60kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e72kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e84kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e96kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border-bottom: 1px solid #e2e2e2; font-size: 14px;\"\u003e126kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eDoes the Battalion 30–48kW boiler come with an expansion vessel or safety valve?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eNo. Per Elterm's installation manual, the Battalion (AsBIII) range is supplied without an expansion vessel, safety valve or safety group. On a sealed\/closed heating system these must be sized for your installation and fitted by your installer before commissioning.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eCan this boiler be customised or scaled up for larger buildings?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eYes. Choose from four factory outputs (30\/36\/42\/48kW), add the optional D.H.W. priority pack, or cascade multiple units in parallel — Elterm rates this range for cascaded installations up to 1.5MW total output. Contact us for a tailored quote on multi-unit schemes.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eWhat's the lead time on this product?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eTypical lead time is 5–7 working days, as each unit is configured to order.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eCan the boiler work alongside a heat pump or an existing gas boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eYes. A volt-free switching contact lets the Battalion hand control to a second heat source when it's switched off, and take back over when it fires — making it well suited as a peak\/backup source alongside an air source heat pump or as a bridge while awaiting a gas connection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eWhat electrical supply and protection does each output need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eAll four models run on a 400V 3-phase supply. Protection ranges from 3 × 50A fuses with 5 × 16mm² cable on the 30kW unit up to 3 × 80A fuses with 5 × 25mm² cable on the 42kW and 48kW units — see the model comparison table above for the exact figures per model.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377; color: #ffffff; padding: 12px 16px; cursor: pointer; font-weight: bold; list-style: none;\"\u003eDoes this need to be installed by a qualified electrician?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #ffffff; font-size: 14.5px;\"\u003eYes. Electrical connection, commissioning and any work carried out with the casing removed must be done by a qualified electrician, and the installation must include adequate overcurrent and RCD protection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"30kW - 400V 3‑phase","offer_id":62781763649885,"sku":"Elterm30kw","price":1795.0,"currency_code":"GBP","in_stock":true},{"title":"36kW - 400V 3‑phase","offer_id":62781763682653,"sku":"Elterm36kw","price":1895.0,"currency_code":"GBP","in_stock":true},{"title":"42kW - 400V 3‑phase","offer_id":62781763715421,"sku":"Elterm42kw","price":1995.0,"currency_code":"GBP","in_stock":true},{"title":"48kW - 400V 3‑phase","offer_id":62781763748189,"sku":"Elterm48kw","price":2100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EltermCommercialBoilerElectricwallmounted.jpg?v=1764781384"},{"product_id":"elterm-electric-system-boiler-4-to-14kw-reliable-efficient-heating","title":"Elterm Electric System Boiler 4 to 14kW","description":"\u003c!-- SEO Product Name: Elterm Sergeant 4-14kW Electric System Boiler | AsBN | DHW Ready --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eElterm Sergeant (AsBN) electric system boiler\u003c\/strong\u003e is built to heat both radiator or underfloor heating circuits and, when the optional DHW package is fitted, a separate domestic hot water cylinder. In the \u003cstrong\u003e4kW to 14kW\u003c\/strong\u003e output band it is well matched to flats, apartments and smaller homes without a mains gas supply, or to properties adding electric heating as a backup to a heat pump.\u003c\/p\u003e\n\u003cp\u003eBuilt on Elterm's \u003cstrong\u003eBasic LED automation\u003c\/strong\u003e platform, the boiler is wall-mounted, requires no flue, and includes a built-in expansion vessel, circulation pump and safety valve as standard. Its \u003cstrong\u003eoptional DHW package\u003c\/strong\u003e adds a three-way solenoid valve, cylinder sensor and priority DHW logic, so heating and hot water can run from the same compact unit.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e4-14kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003ePower range covered\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e99.5%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eBoiler efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003eClass D\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eEnergy efficiency (A+++ to D scale)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e24 months\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e70°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003ePV Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #333; margin-top: 4px;\"\u003e4x solar-integration features\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #c0392b; margin-bottom: 4px;\"\u003eInstallation \u0026amp; Electrical Safety\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 15px;\"\u003eElectrical and hydraulic installation, commissioning and servicing must be carried out by a qualified, legally authorised installer, with overcurrent and RCD protection sized to the fuse and cable table below. The manufacturer's 24-month guarantee is void if the boiler is connected or operated incorrectly, or if a boiler protection kit (magnetic filter and water descaler) is not fitted where required by the warranty terms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eCompact, Flue-Free Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eWall-mounted with \u003cstrong\u003eno flue or chimney connection required\u003c\/strong\u003e, making it straightforward to fit in flats, utility cupboards or plant rooms without external ventilation work.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003ePV Ready Functionality\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eIncludes an \u003cstrong\u003eoperation counter, adjustable maximum power lock, voltage-free (0V) contact, and disconnectable contact\u003c\/strong\u003e for cooperating with a solar PV installation or a second heat source.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eBuilt-In System Components\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eComes with an integrated \u003cstrong\u003eexpansion vessel, circulation pump, safety valve, air vent and pressure gauge\u003c\/strong\u003e, reducing the number of separate parts an installer needs to source.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eModulating Output\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eHigher-output versions can be \u003cstrong\u003esplit into lower power stages\u003c\/strong\u003e via the control panel, allowing the same unit to be de-rated to suit the actual heat loss of the property once installed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eHygienisation Cycle\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eWhere the DHW package is fitted, a built-in \u003cstrong\u003ehygienisation function heats the cylinder to 70°C\u003c\/strong\u003e to control Legionella risk, recommended every 2 to 3 weeks.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px; font-size: 15px;\"\u003eAnti-Stop Protection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.5;\"\u003eAn automatic \u003cstrong\u003eAnti-Stop function runs the pump for one minute every 14 days\u003c\/strong\u003e when the boiler is switched off, preventing the pump rotor from seizing between heating seasons.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eTechnical Specification — Elterm Sergeant (AsBN), 4-14kW band\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eModel codes (4-14kW band)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e123006 (6kW) · 123009 (9kW) · 123012 (12kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003ePower outputs\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e4kW single-phase entry · 6kW · 9kW · 12kW (higher outputs to 24kW also available on this platform)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e6kW \u0026amp; 9kW: 230V single-phase or 400V 3-phase · 12kW: 400V 3-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAutomation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eBasic LED control panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eD (ErP scale spans A+++ to D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eBoiler efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e99.5%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax CH operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e70°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMax DHW operating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e65°C (with DHW package fitted)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eConnections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e¾\" external (CH flow\/return)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eBuilt-in equipment\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eExpansion vessel, circulation pump, safety valve, air vent, pressure gauge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eOptional DHW package\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eElectrovalve, cylinder sensor, activation code — requires min. 12kW coil cylinder (not supplied)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eSystem compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eSealed or open-vented (air-vented) central heating systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eStandards compliance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003eLVD, RoHS, EMC, WEEE, ErP directives\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003eManufacturer guarantee\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e24 months from installation date, subject to registered commissioning and boiler protection kit fitment\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; font-size: 15px;\"\u003eElectrical Protection by Power Output\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e4kW (1-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e1 x 20A fuse, 3 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e6kW (1-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e1 x 32A fuse, 3 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e6kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 10A fuse, 5 x 2.5mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e9kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 16A fuse, 5 x 2.5mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: 600; color: #333; font-size: 14px;\"\u003e12kW (3-phase)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #333; font-size: 14px;\"\u003e3 x 20A fuse, 5 x 4mm² cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"display: flex; background: #008377CF; border-radius: 8px 8px 0 0;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; color: #fff; font-size: 13px;\"\u003eDHW Package\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 6kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e6kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e230V or 400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eOptional (code 100003)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f7fbfa; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 9kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e230V or 400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eOptional (code 100003)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eSergeant 12kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e12kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003e400V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #333;\"\u003eOptional (code 100003)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 24px 0;\"\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat's the difference between this and the heat-only version?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eThis is the same Elterm Sergeant boiler platform. On its own it heats a wet central heating circuit only. Fitting the optional DHW package adds priority control of a separate hot water cylinder, turning it into a system boiler that covers both heating and hot water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eDo I need to buy a hot water cylinder separately?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes. The DHW package only supplies the electrovalve, cylinder sensor and activation code; it requires a separately purchased indirect cylinder with a coil rated at a minimum of 12kW to work correctly.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eWhat electrical supply is needed for a 9kW or 12kW model?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eThe 6kW and 9kW versions can run on either a 230V single-phase or 400V 3-phase supply. The 12kW version requires a 400V 3-phase supply. A qualified electrician should confirm fuse rating and cable size against the protection table above.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eIs this boiler suitable for a flat without gas?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eYes, this power band (4-14kW) is well suited to flats and smaller homes, where its compact wall-mounted design and lack of a flue make installation straightforward.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 14px; cursor: pointer; font-size: 15px;\"\u003eHow often does the hot water need hygienising?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px; font-size: 14px; color: #333; line-height: 1.6; background: #fff;\"\u003eWhere the DHW package is fitted, Elterm recommends running the hygienisation cycle every 2 to 3 weeks. This heats the DHW circuit to 70°C to help control the risk of Legionella bacteria in the stored water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Elterm","offers":[{"title":"4kW - 230V 1‑phase","offer_id":62781817848157,"sku":"Elterm-4kw-1ph","price":1100.0,"currency_code":"GBP","in_stock":true},{"title":"9kW - 230V 1‑phase","offer_id":62781817880925,"sku":"Elterm-9kw-1ph","price":1150.0,"currency_code":"GBP","in_stock":true},{"title":"12kW - 230V 1‑phase","offer_id":62781817913693,"sku":"Elterm-12kw-1ph","price":1170.0,"currency_code":"GBP","in_stock":true},{"title":"14kW - 230V 1‑phase","offer_id":62781817946461,"sku":"Elterm-14kw-1ph","price":1190.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EltermElectricSystemBoiler.webp?v=1764784876"},{"product_id":"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-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 12kW Single-Phase Electric System Boiler | ALS1-1PSY-12 | 5-Yr Warranty","description":"\u003c!-- SEO Product Name: EHS Primus 12kW Single-Phase Electric System Boiler | ALS1-1PSY-12 | 5-Yr Warranty --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; color: #222; line-height: 1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eEHS Primus 12000S\u003c\/strong\u003e is a \u003cstrong\u003e12kW single-phase electric system boiler\u003c\/strong\u003e built as a straightforward, no-flue replacement for a gas system boiler. It connects into an existing wet central heating or underfloor heating circuit — same radiators, same pipework — and heats the home using nothing but a standard electricity supply.\u003c\/p\u003e\n\u003cp\u003eBecause there's \u003cstrong\u003eno combustion, no gas connection, and no flue\u003c\/strong\u003e, the Primus 12000S removes carbon monoxide risk entirely and can be sited almost anywhere in the property. Paired with a separate unvented indirect cylinder, it also delivers \u003cstrong\u003emains-pressure domestic hot water\u003c\/strong\u003e, with the option to heat the cylinder on a cheaper off-peak tariff to cut running costs.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e12 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eNominal output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e230V\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eSingle-phase supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e5 Yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e0\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eFlue or gas connection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e630×380×230mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eH × W × D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003ePump + Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eBuilt in\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border-left: 4px solid #008377CF; border-radius: 6px; padding: 16px 18px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eHow it fits your system\u003c\/div\u003e\n\u003cdiv style=\"color: #222;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003eThe \u003cstrong\u003ePrimus 12000S\u003c\/strong\u003e connects directly to existing radiator or underfloor heating flow-and-return pipework in place of a gas system boiler — no need to resize radiators or re-pipe the property.\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eFor domestic hot water, it must be paired with a separate \u003cstrong\u003eunvented indirect cylinder\u003c\/strong\u003e (not included). Adding an external timer or smart thermostat lets the cylinder be heated on off-peak or night-rate electricity for lower running costs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003e12kW single-phase output\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eSized for small to medium homes running a wet central heating or underfloor heating system on a standard single-phase electricity supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eIntegrated pump \u0026amp; expansion vessel\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eThe circulating pump and expansion vessel are built into the boiler casing, reducing the parts list and labour time on install.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003ePre-wired chassis\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eInternal wiring is done at the factory, cutting down on-site electrical work for the installer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eNo flue or gas supply\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eRemoves combustion risk entirely — no carbon monoxide exposure, no flue routing constraints, and flexible siting anywhere in the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eTouch-screen control panel\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eFront-mounted touchscreen gives clear, direct control over temperature and operating mode at the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eCompatible with off-peak tariffs\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eWorks with external RF or Wi-Fi programmable thermostats, enabling cylinder heating on cheaper night-rate electricity.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eBoiler Details\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003ePrimus (EHS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eElectric Heating Systems Ltd (EHS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003ePrimus 12000S Electric System Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eSKU \/ Part Code\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\u003cstrong\u003eALS1-1PSY-12\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eProduct Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eElectric system boiler — wet central heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eNominal Output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\n\u003cstrong\u003e12 kW\u003c\/strong\u003e, single-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eElectrical \u0026amp; Installation\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e230V AC, single-phase, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHeating Application\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eRadiator and underfloor heating via a sealed primary circuit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHot Water\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eRequires a separate unvented indirect cylinder (not included)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eIntegrated Components\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eCirculating pump and expansion vessel, factory-fitted in the casing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eControls\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eFront-mounted touch-screen panel; compatible with external RF \/ Wi-Fi thermostats\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eFlue Requirement\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eNone — no flue or gas connection needed\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eDimensions \u0026amp; Support\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e630 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e380 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e230 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eServicing\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eNo mandatory annual service requirement (see EHS warranty terms)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e, subject to manufacturer's T\u0026amp;Cs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 30px;\"\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 17px; color: #008377cf; margin-bottom: 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eDo I need to change my radiators or pipework to fit this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eNo. The Primus 12000S is designed as a direct replacement for a gas system boiler and connects to the existing flow and return pipework, so your current radiators or underfloor heating loops can stay exactly as they are.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eDoes the EHS Primus 12000S provide hot water on its own?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eIt provides central heating on its own, but domestic hot water requires a separate \u003cstrong\u003eunvented indirect cylinder\u003c\/strong\u003e, which is not included with the boiler. Once fitted, the boiler heats the cylinder to deliver mains-pressure hot water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eCan I run this boiler on a cheaper night-rate electricity tariff?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eYes. The boiler's controls are compatible with external RF or Wi-Fi programmable thermostats and timers, so the cylinder can be scheduled to heat during off-peak or night-rate periods to reduce running costs.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eIs a flue or gas supply needed for installation?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eNo. As a fully electric system boiler, the Primus 12000S needs no flue and no gas connection, which removes carbon monoxide risk and gives much more flexibility over where it can be sited in the property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eWhat warranty does the EHS Primus 12000S carry?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eIt carries a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e, subject to EHS's standard terms and conditions. There's no mandatory annual service requirement, which keeps ongoing maintenance costs low compared with a combustion boiler.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eIs the 12kW output enough for my property?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003e12kW single-phase output is generally suited to small to medium homes on a wet central heating or underfloor heating system. For larger or higher-demand properties, the equivalent 14kW Primus system boiler may be a better match — a heat loss calculation is the reliable way to confirm sizing before ordering.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":62994144297309,"sku":"ALS1-1PSY-12","price":1330.0,"currency_code":"GBP","in_stock":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 14kW Single-Phase Electric System Boiler | ALS1-1PSY-14 | 5-Yr Warranty","description":"\u003c!-- SEO Product Name: EHS Primus 14kW Single-Phase Electric System Boiler | ALS1-1PSY-14 | 5-Yr Warranty --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; color: #222; line-height: 1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eEHS Primus 14000S\u003c\/strong\u003e is a \u003cstrong\u003e14kW single-phase electric system boiler\u003c\/strong\u003e, designed as a direct, no-flue replacement for a gas system boiler in larger homes. It connects into an existing wet central heating or underfloor heating circuit — same radiators, same pipework — using only a standard electricity supply.\u003c\/p\u003e\n\u003cp\u003eWith \u003cstrong\u003eno combustion, no gas connection, and no flue\u003c\/strong\u003e, the Primus 14000S carries zero risk of carbon monoxide and can be sited flexibly around the property. Paired with a separate unvented indirect cylinder, it also delivers \u003cstrong\u003emains-pressure hot water\u003c\/strong\u003e for multi-bathroom homes, with the option to heat the cylinder on off-peak electricity to reduce running costs.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e14 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eNominal output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e230V\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eSingle-phase supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e5 Yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e0\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eFlue or gas connection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003e630×380×230mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eH × W × D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4fbfa; border: 1px solid #008377CF; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; color: #008377cf;\"\u003ePump + Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333; margin-top: 4px;\"\u003eBuilt in\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border-left: 4px solid #008377CF; border-radius: 6px; padding: 16px 18px; margin: 20px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eHow it fits your system\u003c\/div\u003e\n\u003cdiv style=\"color: #222;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003eThe \u003cstrong\u003ePrimus 14000S\u003c\/strong\u003e connects directly to existing radiator or underfloor heating flow-and-return pipework in place of a gas system boiler, so no radiator changes or re-piping are needed.\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eFor domestic hot water, pair it with a separate \u003cstrong\u003eunvented indirect cylinder\u003c\/strong\u003e (not included) — the higher 14kW output makes this combination well suited to larger, multi-bathroom homes. External timers or smart thermostats allow the cylinder to be heated on off-peak or night-rate electricity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003e14kW single-phase output\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eSized for larger domestic properties running a wet central heating or underfloor heating system on a standard single-phase electricity supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eIntegrated pump \u0026amp; expansion vessel\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eThe circulating pump and expansion vessel are built into the boiler casing, cutting the parts list and install time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003ePre-wired chassis\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eFactory pre-wiring reduces on-site electrical work for the installer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eNo flue or gas supply\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eRemoves combustion risk entirely — no carbon monoxide exposure, no flue routing constraints, and much more freedom over where the unit is sited.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eTouch-screen control panel\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eFront-mounted touchscreen gives clear, direct control over temperature and operating mode at the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #e0e6e5; border-radius: 8px; padding: 16px 18px; background: #fff;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eCompatible with off-peak tariffs\u003c\/div\u003e\n\u003cdiv style=\"color: #333; font-size: 14.5px;\"\u003eWorks with external RF or Wi-Fi programmable thermostats, enabling cylinder heating during cheaper night-rate periods.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eBoiler Details\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003ePrimus (EHS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eElectric Heating Systems Ltd (EHS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003ePrimus 14000S Electric System Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eSKU \/ Part Code\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\u003cstrong\u003eALS1-1PSY-14\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eProduct Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eElectric system boiler — wet central heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eNominal Output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\n\u003cstrong\u003e14 kW\u003c\/strong\u003e, single-phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eElectrical \u0026amp; Installation\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e230V AC, single-phase, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHeating Application\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eRadiator and underfloor heating via a sealed primary circuit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHot Water\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eRequires a separate unvented indirect cylinder (not included)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eIntegrated Components\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eCirculating pump and expansion vessel, factory-fitted in the casing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eControls\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eFront-mounted touch-screen panel; compatible with external RF \/ Wi-Fi thermostats\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eFlue Requirement\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eNone — no flue or gas connection needed\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden; margin-bottom: 22px;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 14px; border-radius: 6px 6px 0 0; font-size: 15px;\"\u003eDimensions \u0026amp; Support\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e630 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e380 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e230 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eServicing\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003eNo mandatory annual gas-safety service; maintenance is simpler than for a combustion boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f4fbfa; border-bottom: 1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex: 0 0 42%; padding: 10px 14px; font-weight: 600; color: #333;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; color: #222;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e, subject to manufacturer's T\u0026amp;Cs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #008377CF; margin: 28px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 30px;\"\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 17px; color: #008377cf; margin-bottom: 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eDo I need to change my radiators or pipework to fit this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eNo. The Primus 14000S is designed as a direct replacement for a gas system boiler and connects to the existing flow and return pipework, so current radiators or underfloor heating loops don't need to be altered.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eDoes the EHS Primus 14000S provide hot water on its own?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eIt provides central heating on its own; domestic hot water needs a separate \u003cstrong\u003eunvented indirect cylinder\u003c\/strong\u003e, which isn't included with the boiler. Once fitted, the boiler heats the cylinder to deliver mains-pressure hot water, suited to larger and multi-bathroom properties.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eCan I run this boiler on a cheaper night-rate electricity tariff?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eYes. The controls are compatible with external RF or Wi-Fi programmable thermostats and timers, so the cylinder can be scheduled to heat during off-peak or night-rate periods for lower running costs.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eIs a flue or gas supply needed for installation?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eNo. As a fully electric system boiler, the Primus 14000S needs no flue and no gas connection, removing carbon monoxide risk and allowing much more flexibility over siting within the property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eWhat warranty does the EHS Primus 14000S carry?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eIt carries a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e, subject to EHS's standard terms and conditions. There's no mandatory annual gas-safety service, keeping ongoing maintenance simpler than a combustion boiler.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 10px; border: 1px solid #e6ebea; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; cursor: pointer; list-style: none;\"\u003eHow does the 14kW model compare to the 12kW Primus system boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; color: #222; background: #fff;\"\u003eBoth share the same physical footprint, integrated pump and vessel, and touch-screen controls. The 14kW model delivers a higher heat output, making it the better fit for larger homes or properties with a greater heating and hot water demand — a heat loss calculation will confirm which size is right before ordering.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":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":"biasi-pro-electric-system-boiler-6kw-single-phase","title":"Biasi Pro Electric System Boiler 6kW Single Phase","description":"\u003c!-- SEO Product Name: Biasi 6kW Single Phase Electric System Boiler | BIPROELEC6S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 6kW Single Phase Electric System Boiler (BIPROELEC6S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 6kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e26A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e32A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e26A\u003c\/strong\u003e at full load on a 230V single phase supply and Biasi recommend a \u003cstrong\u003e32A\u003c\/strong\u003e breaker with \u003cstrong\u003e6mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 6kW System Boiler, BIPROELEC6S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle phase 230V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e26A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 6kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e26A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e32A breaker\u003c\/strong\u003e with \u003cstrong\u003e6mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63239726104925,"sku":"BIPROELEC6S","price":870.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-pro-electric-system-boiler-8kw-single-phase","title":"Biasi Pro Electric System Boiler 8kW Single Phase","description":"\u003c!-- SEO Product Name: Biasi 8kW Single Phase Electric System Boiler | BIPROELEC8S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 8kW Single Phase Electric System Boiler (BIPROELEC8S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 8kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e8kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e35A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e40A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e35A\u003c\/strong\u003e at full load on a 230V single phase supply and Biasi recommend a \u003cstrong\u003e40A\u003c\/strong\u003e breaker with \u003cstrong\u003e6mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 8kW System Boiler, BIPROELEC8S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle phase 230V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e35A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e40A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e6mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e8kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 8kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e35A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e40A breaker\u003c\/strong\u003e with \u003cstrong\u003e6mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63239914520925,"sku":"BIPROELEC8S","price":895.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-pro-electric-system-boiler-12kw-single-phase","title":"Biasi Pro-Electric 12kW System Boiler | Single Phase Flueless","description":"\u003c!-- SEO Product Name: Biasi 12kW Single Phase Electric System Boiler | BIPROELEC12S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 12kW Single Phase Electric System Boiler (BIPROELEC12S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 12kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e12kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e52A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e63A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e10mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e230V 1-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e52A\u003c\/strong\u003e at full load on a 230V single phase supply and Biasi recommend a \u003cstrong\u003e63A\u003c\/strong\u003e breaker with \u003cstrong\u003e10mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 12kW System Boiler, BIPROELEC12S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eSingle phase 230V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e52A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e63A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e12kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 12kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e52A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e63A breaker\u003c\/strong\u003e with \u003cstrong\u003e10mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63240035172701,"sku":"BIPROELEC12S","price":950.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"biasi-pro-electric-system-boiler-16kw-three-phase","title":"Biasi Pro Electric System Boiler 16kW Three Phase","description":"\u003c!-- SEO Product Name: Biasi 16kW 3 Phase Electric System Boiler | BIPROELEC16S --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBiasi Pro-Electric 16kW Three Phase Electric System Boiler (BIPROELEC16S)\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted, flueless electric system boiler\u003c\/strong\u003e that is a direct replacement for a gas system boiler. It works with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e to supply central heating and stored hot water, which makes it the right route for homes with \u003cstrong\u003emore than one bathroom\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThere is \u003cstrong\u003eno flue, no gas and no condensate\u003c\/strong\u003e, and the boiler modulates its output towards full 16kW power, running at \u003cstrong\u003eclose to 100% efficiency\u003c\/strong\u003e. It has an \u003cstrong\u003eintegrated pump and expansion vessel\u003c\/strong\u003e, a \u003cstrong\u003etouchscreen control panel\u003c\/strong\u003e and very few moving parts, and it can be paired with a timer to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e or integrated with a \u003cstrong\u003esolar PV system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e16kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRated Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e23A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eFull-Load Current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e32A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 x 4mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e400V 3-Ph\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSupply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 30%; min-width:130px; box-sizing:border-box; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e3 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eFittings Pack Optional\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe Biasi Pro-Electric System Boiler Fittings Pack (\u003cstrong\u003eEi1124501\u003c\/strong\u003e) is \u003cstrong\u003ean optional item sold separately\u003c\/strong\u003e. Add it to your order if you need the fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eThree Phase Supply Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler needs a \u003cstrong\u003e400V three-phase (3N~) supply\u003c\/strong\u003e and is not compatible with standard single-phase domestic wiring. Confirm a three-phase supply before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eElectrical Supply Check Before You Order\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model draws \u003cstrong\u003e23A\u003c\/strong\u003e at full load on a 400V three-phase supply and Biasi recommend a \u003cstrong\u003e32A\u003c\/strong\u003e breaker with \u003cstrong\u003e3 x 4mm²\u003c\/strong\u003e cable. Biasi require a voltage and load test calculation to confirm the breaker size and that the property supply can carry the load before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eIndirect Cylinder Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It does \u003cstrong\u003enot\u003c\/strong\u003e supply instantaneous hot water on its own and must be paired with a \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNo Flue, No Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eWith \u003cstrong\u003ezero combustion\u003c\/strong\u003e there is no flue, no condensate and no carbon monoxide risk, so siting is flexible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDirect Gas System Boiler Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e using the \u003cstrong\u003esame \u0026amp;frac34\" heating connections\u003c\/strong\u003e as a gas system boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMulti-Bathroom Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003ePaired with an indirect cylinder, Biasi rate every output for \u003cstrong\u003eradiators, taps, showers and baths\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIntegrated Pump and Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ecirculating pump, expansion vessel, pressure gauge and safety valve\u003c\/strong\u003e are pre-fitted and the boiler is \u003cstrong\u003epre-wired\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTouchscreen Control Panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eHandles \u003cstrong\u003ewinter and summer mode, 24-hour timing, radiator or floor heating mode and child lock\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F4FAF9; border:1px solid #BFE0DC; border-top:4px solid #008377CF; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSolar PV and Off-Peak Friendly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eUse a timer to heat during \u003cstrong\u003eoff-peak periods\u003c\/strong\u003e, or integrate with \u003cstrong\u003esolar PV\u003c\/strong\u003e to use self-generated power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIdentity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBiasi\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eModel \/ MPN\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePro-Electric 16kW System Boiler, BIPROELEC16S\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWall-mounted electric system boiler (indirect cylinder required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFittings Pack (optional)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEi1124501 - sold separately\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThree phase 400V, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eCurrent at Full Load\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e23A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Breaker\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e32A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRecommended Cable\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 x 4mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIPX4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRated Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e16kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eMax \/ Min Heating Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e2.5 bar \/ 0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eRadiator \/ Floor Heating Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e30-80°C \/ 30-60°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eConnections and Size\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eHeating Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e¾\" male\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003ePRV Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e630 x 380 x 230mm (H x W x D)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eWarranty and Standards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3 years, registered within 45 days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #BFE0DC;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#008377CF;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7671\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#D32F2F; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWarranty and Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003e3-year Biasi warranty\u003c\/strong\u003e is only valid if the boiler is installed by a competent, registered installer, a \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e is issued immediately after the live connection, the guarantee is \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e, the appliance is \u003cstrong\u003eserviced annually by a registered electrician\u003c\/strong\u003e, and a \u003cstrong\u003emagnetic filter is fitted to the heating return\u003c\/strong\u003e. Biasi state they accept no responsibility for failures where these terms are not met.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF; margin:28px 0 12px 0; padding-bottom:6px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eIs the fittings pack included?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eNo. The \u003cstrong\u003eBiasi System Boiler Fittings Pack (Ei1124501)\u003c\/strong\u003e is an optional item sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhich cylinder do I need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eA \u003cstrong\u003evented or unvented indirect hot water cylinder\u003c\/strong\u003e. This boiler is a system boiler and does not provide instantaneous hot water by itself.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eWhat electrical supply does the 16kW need?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eIt draws \u003cstrong\u003e23A\u003c\/strong\u003e at full load and Biasi recommend a \u003cstrong\u003e32A breaker\u003c\/strong\u003e with \u003cstrong\u003e3 x 4mm² cable\u003c\/strong\u003e. A voltage and load test is required before installation, and a Part P certificate must be issued.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eCan I use it with solar panels or off-peak tariffs?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eYes. Biasi state it can be \u003cstrong\u003eintegrated with a solar PV system\u003c\/strong\u003e and, with a timer, set up to take advantage of \u003cstrong\u003eoff-peak electricity\u003c\/strong\u003e to heat your water.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#ffffff; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#008377CF;\"\u003e\u003cspan\u003eHow is the warranty validated?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; background:#ffffff;\"\u003eRegister within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e, have a \u003cstrong\u003ePart P certificate\u003c\/strong\u003e issued after the live connection, fit a \u003cstrong\u003emagnetic filter on the return\u003c\/strong\u003e and arrange an \u003cstrong\u003eannual service by a registered electrician\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Biasi","offers":[{"title":"Default Title","offer_id":63240066400605,"sku":"BIPROELEC16S","price":1100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BiasiProElectricBoiler.webp?v=1770371223"},{"product_id":"baxi-amptec-s-electric-system-boiler-4kw-to-18kw-electric-central-heating","title":"Baxi Amptec S Electric System Boiler - 4kW to 18kW Electric Central Heating","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- Intro --\u003e\n  \u003cp style=\"margin:0 0 24px;\"\u003eThe \u003cstrong\u003eBaxi Amptec S\u003c\/strong\u003e is a \u003cstrong\u003ecompact, UK-manufactured electric system boiler\u003c\/strong\u003e that brings the familiar look and feel of a gas boiler to homes and properties where mains gas is not an option. Available in \u003cstrong\u003esix output sizes from 4 kW to 18 kW\u003c\/strong\u003e, with both single-phase and three-phase models, it suits everything from small flats to larger properties requiring more heating capacity. With a \u003cstrong\u003emodulating ratio of up to 9:1\u003c\/strong\u003e, \u003cstrong\u003eOpenTherm compatibility\u003c\/strong\u003e, and a built-in circulation pump and expansion vessel, the Amptec S is engineered to deliver genuinely efficient electric heating — and to keep installation tidy and fast.\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:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;line-height:1;\"\u003e6\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eoutput sizes: 4–18 kW\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;line-height:1;\"\u003e9:1\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003emodulating ratio\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;line-height:1;\"\u003e35–80°C\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003etemperature range\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;line-height:1;\"\u003e284mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003edepth — fits 290mm cupboard\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;line-height:1;\"\u003e2yr\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eparts \u0026amp; labour warranty\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Callout: no flue \/ no gas installer needed (teal - informational) --\u003e\n  \u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;border-radius:4px;padding:14px 16px;margin:0 0 16px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eNo Flue. No Gas Supply. No Annual Gas Safety Check.\u003c\/strong\u003e — As a fully electric boiler, the Amptec S requires no flue, no gas connection, and no Gas Safe engineer. It is an ideal retrofit solution for properties with flue restrictions, rural off-gas homes, or any project where removing gas from the heating system is the goal.\n  \u003c\/div\u003e\n\n  \u003c!-- Callout: installer amber — electrical supply requirements --\u003e\n  \u003cdiv style=\"background:#fff8e1;border-left:4px solid #f9a825;border-radius:4px;padding:14px 16px;margin:0 0 16px;\"\u003e\n    \u003cstrong style=\"color:#7a5800;\"\u003eElectrical Supply Note\u003c\/strong\u003e — Models \u003cstrong\u003eAmptec S4, S6, S8, and S12\u003c\/strong\u003e run on a standard \u003cstrong\u003e230 V single-phase\u003c\/strong\u003e supply. The \u003cstrong\u003eAmptec S14 and S18\u003c\/strong\u003e require a \u003cstrong\u003e400 V three-phase\u003c\/strong\u003e supply. Always confirm the available electrical supply before specifying a model. Installation and connection must be carried out by a qualified electrician.\n  \u003c\/div\u003e\n\n  \u003c!-- Callout: system boiler — cylinder required for hot water (amber) --\u003e\n  \u003cdiv style=\"background:#fff8e1;border-left:4px solid #f9a825;border-radius:4px;padding:14px 16px;margin:0 0 28px;\"\u003e\n    \u003cstrong style=\"color:#7a5800;\"\u003eSystem Boiler — Cylinder Required for Hot Water\u003c\/strong\u003e — The Amptec S is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e and does not provide hot water directly. A separate \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e is required for domestic hot water supply. It can also be used with a \u003cstrong\u003eSolar PV battery\u003c\/strong\u003e to help reduce running costs.\n  \u003c\/div\u003e\n\n  \u003c!-- Feature cards --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-weight:700;font-size:15px;\"\u003eKey Features\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;padding:16px;margin:0 0 28px;\"\u003e\n    \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;margin-top:4px;\"\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eSix Output Sizes\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eAvailable as \u003cstrong\u003eAmptec S4, S6, S8, S12, S14, and S18\u003c\/strong\u003e — covering outputs from 4 kW to 18 kW. Single-phase models cover 4–12 kW; three-phase models cover 14 and 18 kW, giving specifiers the right fit for small flats up to larger multi-room properties.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eModulating Output up to 9:1\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eRather than simply switching on and off at full power, the Amptec S \u003cstrong\u003emodulates its heating element output\u003c\/strong\u003e in a ratio of up to 9:1. This means it intelligently matches heat delivery to demand, consuming only the electricity needed and directly cutting running costs.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eRadiator \u0026amp; Underfloor Heating\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eA \u003cstrong\u003ewide temperature range of 35°C to 80°C\u003c\/strong\u003e makes the Amptec S equally at home driving a traditional radiator system at higher flow temperatures or an underfloor heating circuit at lower temperatures — no additional controls or settings needed to switch between system types.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eOpenTherm Certified\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eFull \u003cstrong\u003eOpenTherm compatibility\u003c\/strong\u003e allows the boiler to communicate with smart controls — including the \u003cstrong\u003eBaxi uSense 2\u003c\/strong\u003e — enabling weather compensation and load modulation for maximum system efficiency. OpenTherm connection unlocks better performance than a simple on\/off thermostat connection.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eBuilt-In Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eThe Amptec S ships with a \u003cstrong\u003ebuilt-in circulation pump and 7-litre expansion vessel\u003c\/strong\u003e. These components are housed within the boiler casing, reducing pipework, cutting installation time, and keeping the plant space tidy — all pipework connections are contained inside the unit.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eCompact Cupboard Fit\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eAt just \u003cstrong\u003e284 mm deep\u003c\/strong\u003e, the Amptec S fits comfortably inside a standard 290 mm deep cupboard. Weighing between 20 and 22.5 kg empty depending on model, it is light enough for one person to handle safely, making installation easier in tight or awkward spaces.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eDuty Cycling of Elements\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003eDuty cycling\u003c\/strong\u003e rotates which heating elements are active, distributing wear evenly across all elements. This extends the working life of each element, improves long-term reliability, and helps maintain consistent thermal efficiency across the product's lifespan.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eLPG Alternative for Off-Gas Properties\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eFor properties without mains gas — rural homes, older buildings with flue restrictions, flats, garages, or extensions — the Amptec S is a \u003cstrong\u003ecleaner, safer alternative to LPG\u003c\/strong\u003e. No fuel deliveries, no storage tanks, no flue penetrations. Just a reliable electric heating solution.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#008377CF;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eSolar PV Battery Compatible\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:15px;\"\u003eThe Amptec S can be used in conjunction with a \u003cstrong\u003eSolar PV battery system\u003c\/strong\u003e, allowing homeowners to use self-generated renewable electricity to run the boiler and directly offset running costs — making it a strong choice for homes with existing or planned solar installations.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Dimensions --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-weight:700;font-size:15px;\"\u003eDimensions \u0026amp; Clearances\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;overflow:hidden;margin:0 0 28px;\"\u003e\n    \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;font-weight:600;width:50%;\"\u003eWidth (A)\u003c\/td\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e395 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eHeight (B)\u003c\/td\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e718 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eDepth (C)\u003c\/td\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e284 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eSide Clearance (D)\u003c\/td\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eUpper Clearance (E)\u003c\/td\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e200 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eLower Clearance (F)\u003c\/td\u003e\n          \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e200 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:10px 14px;font-weight:600;\"\u003eFront Clearance (G)\u003c\/td\u003e\n          \u003ctd style=\"padding:10px 14px;\"\u003e6 mm in operation \/ 450 mm for servicing\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Full technical spec table --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-weight:700;font-size:15px;\"\u003eTechnical Specifications — All Models\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;overflow-x:auto;margin:0 0 28px;\"\u003e\n    \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;min-width:660px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n          \u003cth style=\"padding:9px 12px;text-align:left;font-weight:600;\"\u003eSpecification\u003c\/th\u003e\n          \u003cth style=\"padding:9px 12px;text-align:center;font-weight:600;\"\u003eS4\u003c\/th\u003e\n          \u003cth style=\"padding:9px 12px;text-align:center;font-weight:600;\"\u003eS6\u003c\/th\u003e\n          \u003cth style=\"padding:9px 12px;text-align:center;font-weight:600;\"\u003eS8\u003c\/th\u003e\n          \u003cth style=\"padding:9px 12px;text-align:center;font-weight:600;\"\u003eS12\u003c\/th\u003e\n          \u003cth style=\"padding:9px 12px;text-align:center;font-weight:600;\"\u003eS14\u003c\/th\u003e\n          \u003cth style=\"padding:9px 12px;text-align:center;font-weight:600;\"\u003eS18\u003c\/th\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#008377CF;color:#fff;\"\u003e\n          \u003ctd style=\"padding:6px 12px;font-size:13px;\"\u003eProduct Code\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\"\u003e7828706\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\"\u003e7828707\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\"\u003e7828708\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\"\u003e7828710\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\"\u003e7828711\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\"\u003e7828712\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#e6f4f3;color:#005c54;\"\u003e\n          \u003ctd style=\"padding:6px 12px;font-size:13px;font-style:italic;\"\u003ePhase\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\" colspan=\"4\"\u003eSingle Phase (230 V)\u003c\/td\u003e\n          \u003ctd style=\"padding:6px 12px;text-align:center;font-size:13px;\" colspan=\"2\"\u003eThree Phase (400 V)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eMax output (kW)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e4\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e6\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e8\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e12\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e14\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e18\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eWeight empty (kg)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e20\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e20\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e21.5\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e21.5\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e22.5\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e22.5\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eWeight full (kg)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e21\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e21\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e23\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e23\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e24.5\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e24.5\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eInternal volume (litres)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e1\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e1\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e1.5\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e1.5\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e2\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e2\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eExpansion vessel (litres)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"6\"\u003e7 (all models)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eTemperature range\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"6\"\u003e35–80°C (all models)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eMin \/ Max heating pressure (bar)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"6\"\u003e0.5 \/ 2.8 (all models)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003ePRV setting (bar)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"6\"\u003e2.8 (all models)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eSupply voltage\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"4\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"2\"\u003e400 V 3-ph \/ 50 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003ePower consumption (W)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e4,060\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e6,060\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e8,060\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e12,060\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e14,060\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e18,060\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;font-weight:600;\"\u003eInternal MCB (elements)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"2\"\u003e10 A × 3\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\" colspan=\"2\"\u003e20 A × 3\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e32 A × 3\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;text-align:center;\"\u003e32 A × 4\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#fff;\"\u003e\n          \u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003ePipe connections (flow \u0026amp; return)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 12px;text-align:center;\" colspan=\"6\"\u003e22 mm (all models)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\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;font-weight:700;font-size:15px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;padding:8px 0;margin:0 0 28px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:0 16px;\"\u003e\n      \u003csummary style=\"font-weight:600;padding:12px 0;cursor:pointer;color:#005c54;\"\u003eWhich Amptec S model is right for my property?\u003c\/summary\u003e\n      \u003cp style=\"margin:8px 0 14px;\"\u003eOutput sizing depends on the heat loss of the property. As a rough guide, \u003cstrong\u003e4–6 kW\u003c\/strong\u003e suits smaller flats or well-insulated properties; \u003cstrong\u003e8–12 kW\u003c\/strong\u003e suits typical 2–3 bedroom homes; and \u003cstrong\u003e14–18 kW\u003c\/strong\u003e (three-phase) suits larger properties with higher heat demand. A heat loss calculation by a qualified engineer will give you an accurate answer. Note that S14 and S18 models require a \u003cstrong\u003ethree-phase 400 V supply\u003c\/strong\u003e.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:0 16px;\"\u003e\n      \u003csummary style=\"font-weight:600;padding:12px 0;cursor:pointer;color:#005c54;\"\u003eDoes the Amptec S provide hot water as well as heating?\u003c\/summary\u003e\n      \u003cp style=\"margin:8px 0 14px;\"\u003eNo. The Amptec S is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e and provides central heating only. To supply domestic hot water you will need a separate \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e. The boiler heats the cylinder's coil, which in turn heats the stored water. This is a standard and straightforward arrangement for system boiler installations.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:0 16px;\"\u003e\n      \u003csummary style=\"font-weight:600;padding:12px 0;cursor:pointer;color:#005c54;\"\u003eIs the Amptec S suitable for underfloor heating?\u003c\/summary\u003e\n      \u003cp style=\"margin:8px 0 14px;\"\u003eYes. The \u003cstrong\u003eadjustable temperature range of 35°C to 80°C\u003c\/strong\u003e means the Amptec S can operate at the low flow temperatures typically required for underfloor heating (usually 35–45°C) as well as the higher temperatures needed for standard radiator systems. No additional low-loss header or blending valve is required for typical UFH circuits, though system design will dictate the exact configuration.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:0 16px;\"\u003e\n      \u003csummary style=\"font-weight:600;padding:12px 0;cursor:pointer;color:#005c54;\"\u003eWhat does OpenTherm compatibility mean in practice?\u003c\/summary\u003e\n      \u003cp style=\"margin:8px 0 14px;\"\u003eOpenTherm is a communication standard that allows a smart thermostat — such as the \u003cstrong\u003eBaxi uSense 2\u003c\/strong\u003e — to send temperature demand information directly to the boiler rather than simply switching it on or off. This enables the Amptec S to \u003cstrong\u003emodulate its output precisely to match the demand\u003c\/strong\u003e, avoiding over-heating and reducing electricity consumption. An OpenTherm-connected system will typically be more efficient than a standard on\/off thermostat installation.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:0 16px;\"\u003e\n      \u003csummary style=\"font-weight:600;padding:12px 0;cursor:pointer;color:#005c54;\"\u003eDoes the Amptec S need an annual service?\u003c\/summary\u003e\n      \u003cp style=\"margin:8px 0 14px;\"\u003eElectric boilers generally require \u003cstrong\u003eless routine maintenance\u003c\/strong\u003e than gas boilers. There is no annual gas safety certificate requirement, no combustion analysis, and no flue inspection. Baxi recommends a periodic check by a qualified engineer to inspect electrical connections, system pressure, and the condition of the heating water — but the service requirements are significantly lighter than for gas or oil appliances.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"padding:0 16px;\"\u003e\n      \u003csummary style=\"font-weight:600;padding:12px 0;cursor:pointer;color:#005c54;\"\u003eCan the Amptec S work with a Solar PV or battery system?\u003c\/summary\u003e\n      \u003cp style=\"margin:8px 0 14px;\"\u003eYes. The Amptec S is compatible with use alongside a \u003cstrong\u003eSolar PV battery system\u003c\/strong\u003e. By diverting surplus solar-generated electricity to run the boiler, homeowners can reduce the amount of grid electricity consumed for heating — directly lowering running costs. This makes the Amptec S a particularly strong choice for properties with existing solar installations or those planning to add renewables in the future.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"4kW - Single Phase","offer_id":64662582722909,"sku":"7828706","price":1190.0,"currency_code":"GBP","in_stock":true},{"title":"6kW - Single Phase","offer_id":64662582755677,"sku":"7828707","price":1270.0,"currency_code":"GBP","in_stock":true},{"title":"8kW - Single Phase","offer_id":64662582788445,"sku":"7828708","price":1360.0,"currency_code":"GBP","in_stock":true},{"title":"12kW - Single Phase","offer_id":64662582821213,"sku":"7828710","price":1395.0,"currency_code":"GBP","in_stock":true},{"title":"14kW - Three Phase","offer_id":64662582853981,"sku":"7828711","price":1795.0,"currency_code":"GBP","in_stock":true},{"title":"18kW - Three Phase","offer_id":64662582886749,"sku":"7828712","price":1835.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BaxiAmptecSElectricSystemBoiler-4kWto18kWElectricCentralHeating_d0439b2a-7571-48c1-8038-fa08659f9626.png?v=1783691287"},{"product_id":"ehc-comet-2-4-6-8kw-system-electric-boiler-ehc-cs8kw-5-year-warranty","title":"EHC Comet 2\/4\/6\/8kW System Electric Boiler | EHC.CS8KW | 5-Year Warranty","description":"\u003c!-- SEO Product Name: EHC Comet 2\/4\/6\/8kW System Electric Boiler | EHC.CS8KW | 5-Year Warranty --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eEHC Comet 2\/4\/6\/8kW System Electric Boiler\u003c\/strong\u003e (EHC.CS8KW) is the entry-power model in the Comet Standard System range, built on over \u003cstrong\u003e21 years of EHC electric heating expertise\u003c\/strong\u003e. It replaces a gas or oil system boiler where no flue is available, delivering \u003cstrong\u003ecentral heating and domestic hot water via an S-Plan configuration\u003c\/strong\u003e from a single, compact wall-mounted unit.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThis model runs on a \u003cstrong\u003esingle-phase 230V supply\u003c\/strong\u003e with \u003cstrong\u003efour selectable output settings — 2kW, 4kW, 6kW or 8kW\u003c\/strong\u003e — configured on-site to match the property’s heat loss and available electrical capacity. The pump, expansion vessel, automatic air vent, auto-bypass and high-current thermal cut-out are all \u003cstrong\u003efactory-fitted inside the casing\u003c\/strong\u003e, so there is no external plumbing or pipework to install.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e2–8 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eSelectable Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e230V 1N~\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eSingle Phase Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e41 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eQuiet Operation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e20.5 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eBoiler Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e20–85°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e5 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eManufacturer Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#D32F2F; margin-bottom:6px; font-size:14.5px;\"\u003eImportant Safety Information\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e Wiring Regulations. A \u003cstrong\u003e30mA RCD\u003c\/strong\u003e, dedicated local isolation and an in-line \u003cstrong\u003emagnetic filter\u003c\/strong\u003e are all mandatory — failure to fit a magnetic filter to this boiler will \u003cstrong\u003einvalidate the manufacturer’s warranty\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#E0942A; margin-bottom:6px; font-size:14.5px;\"\u003ePlease Note\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eA \u003cstrong\u003eload check of the property’s incoming electrical supply\u003c\/strong\u003e should be carried out before installation, as upgrading the main fuse may be required at higher output settings. Minimum supply cable cross-section must be calculated by a qualified electrician in line with \u003cstrong\u003eBS 7671\u003c\/strong\u003e, using the load current values in the specification table below.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eFlexible Multi-Output Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eFour selectable outputs (2, 4, 6 or 8kW) let installers range-rate the boiler on site to match the exact heat loss of the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eSix-Stage Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eA \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e with six-stage heating modulates output in real time, reducing electricity consumption and running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eVirtually Silent Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eRated at just \u003cstrong\u003e41dB\u003c\/strong\u003e, the Comet Standard operates quietly enough for airing cupboards, kitchens and utility rooms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eUnderfloor Heating Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eAdjustable flow temperature from \u003cstrong\u003e20–85°C\u003c\/strong\u003e makes it equally suited to underfloor heating and traditional radiator systems.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eCompact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eAll core components — pump, expansion vessel, auto-air vent and auto-bypass — are built into a single \u003cstrong\u003e716 x 316 x 235mm\u003c\/strong\u003e casing for a one-person lift and install.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eTrusted EHC Technology \u0026amp; Support\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eBacked by \u003cstrong\u003e21+ years\u003c\/strong\u003e of UK electric heating manufacture and a \u003cstrong\u003e5-year manufacturer’s warranty\u003c\/strong\u003e (registration required).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eRated Power Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e2 \/ 4 \/ 6 \/ 8 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eRated Voltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e230V 1N~ (single phase)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eOutlet Flow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e20–85°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e100°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eSound Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e41 dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum System Flow Rate\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e3.5 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eElectrical Data\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMCB Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e16 \/ 20 \/ 32 \/ 40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eLoad Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e8.7 \/ 17.4 \/ 26.1 \/ 34.8 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum Supply Cable Cross-Section*\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e2.5 \/ 4 \/ 6 mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Supply Cable Cross-Section\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e16 mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Allowed Network Impedance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.27 \/ 0.17 \/ 0.15 Ω\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eHydraulics \u0026amp; Build\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eBoiler Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eG 3\/4\" (internal thread)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum System Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.3 MPa (3 bar)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum System Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.05 MPa (0.5 bar)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eBuilt-In Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5 litres, 1.5 bar precharge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eSafety Class (Ingress Protection)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eIP 22\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eHeat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eStainless steel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eDimensions \u0026amp; Warranty\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e716 x 316 x 235 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e~20.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eManufacturer Warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5 years (registration required, T\u0026amp;Cs apply)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:14.5px;\"\u003eGood to Know\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003e*Minimum cable cross-sections are the manufacturer’s stated minimums only. The cable size for your installation must be calculated separately by a qualified electrician in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e, accounting for cable type, routing and supply voltage deviation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eCan this boiler provide hot water as well as heating?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. The EHC.CS8KW can be installed for \u003cstrong\u003eheating only\u003c\/strong\u003e, or for combined heating and domestic hot water when wired in an \u003cstrong\u003e‘S’ Plan configuration\u003c\/strong\u003e alongside a compatible hot water cylinder and twin-channel control.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eDo I need to choose one fixed output, or can it be changed later?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eThe boiler ships with all four output settings available. The installer configures the required output (2, 4, 6 or 8kW) during commissioning via the DIP switches and control panel software — it is not locked to a single kW rating at the factory.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat electrical supply does this model need?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eThe 2\/4\/6\/8kW model runs on a \u003cstrong\u003esingle-phase 230V\u003c\/strong\u003e supply. Required MCB rating rises with the selected output (from 16A at 2kW up to 40A at 8kW), so a qualified electrician should confirm the property’s available supply capacity before installation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eIs a magnetic filter really mandatory?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. A magnetic filter must be fitted to the return of this boiler. This is a \u003cstrong\u003emanufacturer warranty condition\u003c\/strong\u003e, not just best practice — installing without one will void the warranty regardless of any other fault.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eIs this boiler suitable for underfloor heating?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. The adjustable flow temperature range of \u003cstrong\u003e20–85°C\u003c\/strong\u003e covers both low-temperature underfloor systems and standard radiator circuits, and the boiler is compatible with wet underfloor heating installations.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":65934529397085,"sku":"EHC.CS8KW","price":1220.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHCCometElectricSystemBoiler.jpg?v=1789537046"},{"product_id":"ehc-comet-7-2-9-6-12-14-4kw-system-electric-boiler-ehc-cs14-4kw-5-year-warranty","title":"EHC Comet 7.2\/9.6\/12\/14.4kW System Electric Boiler | EHC.CS14.4KW | 5-Year Warranty","description":"\u003c!-- SEO Product Name: EHC Comet 7.2\/9.6\/12\/14.4kW System Electric Boiler | EHC.CS14.4KW | 5-Year Warranty --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eEHC Comet 7\/9\/12\/14.4kW System Electric Boiler\u003c\/strong\u003e (EHC.CS14.4KW) is the mid-power model in the Comet Standard System range, built on over \u003cstrong\u003e21 years of EHC electric heating expertise\u003c\/strong\u003e. It is designed for properties with a higher heat demand than the base model can cover, delivering \u003cstrong\u003ecentral heating and domestic hot water via an S-Plan configuration\u003c\/strong\u003e from a single wall-mounted unit.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThis model runs on a \u003cstrong\u003esingle-phase 240V supply\u003c\/strong\u003e with \u003cstrong\u003efour selectable output settings — 7.2kW, 9.6kW, 12kW or 14.4kW\u003c\/strong\u003e — configured on-site to match the property’s heat loss and available electrical capacity. The pump, expansion vessel, automatic air vent, auto-bypass and high-current thermal cut-out are all \u003cstrong\u003efactory-fitted inside the casing\u003c\/strong\u003e, removing the need for external plumbing or pipework.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e7.2–14.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eSelectable Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e240V 1N~\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eSingle Phase Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e41 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eQuiet Operation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e20.5 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eBoiler Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e20–85°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e5 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eManufacturer Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#D32F2F; margin-bottom:6px; font-size:14.5px;\"\u003eImportant Safety Information\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e Wiring Regulations. A \u003cstrong\u003e30mA RCD\u003c\/strong\u003e, dedicated local isolation and an in-line \u003cstrong\u003emagnetic filter\u003c\/strong\u003e are all mandatory — failure to fit a magnetic filter to this boiler will \u003cstrong\u003einvalidate the manufacturer’s warranty\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#E0942A; margin-bottom:6px; font-size:14.5px;\"\u003ePlease Note\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eAt this power range, MCB ratings run up to \u003cstrong\u003e63A\u003c\/strong\u003e and load current up to \u003cstrong\u003e60A\u003c\/strong\u003e at the top 14.4kW setting. A \u003cstrong\u003eload check of the property’s incoming electrical supply\u003c\/strong\u003e is strongly recommended, and upgrading the main fuse is often required. Supply cable size must be calculated by a qualified electrician in line with \u003cstrong\u003eBS 7671\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eFlexible Multi-Output Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eFour selectable outputs (7.2, 9.6, 12 or 14.4kW) let installers range-rate the boiler on site to match the exact heat loss of larger properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eSix-Stage Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eA \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e with six-stage heating modulates output in real time, reducing electricity consumption and running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eVirtually Silent Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eRated at just \u003cstrong\u003e41dB\u003c\/strong\u003e, the Comet Standard operates quietly enough for airing cupboards, kitchens and utility rooms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eUnderfloor Heating Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eAdjustable flow temperature from \u003cstrong\u003e20–85°C\u003c\/strong\u003e makes it equally suited to underfloor heating and traditional radiator systems.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eCompact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eAll core components — pump, expansion vessel, auto-air vent and auto-bypass — are built into a single \u003cstrong\u003e716 x 316 x 235mm\u003c\/strong\u003e casing for a one-person lift and install.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eTrusted EHC Technology \u0026amp; Support\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eBacked by \u003cstrong\u003e21+ years\u003c\/strong\u003e of UK electric heating manufacture and a \u003cstrong\u003e5-year manufacturer’s warranty\u003c\/strong\u003e (registration required).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eRated Power Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e7.2 \/ 9.6 \/ 12.0 \/ 14.4 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eRated Voltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e240V 1N~ (single phase)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eOutlet Flow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e20–85°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e100°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eSound Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e41 dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum System Flow Rate\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e4.5 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eElectrical Data\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMCB Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e40 \/ 50 \/ 63 \/ 63 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eLoad Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e30.0 \/ 40.0 \/ 50.0 \/ 60.0 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum Supply Cable Cross-Section*\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e4 \/ 6 \/ 10 mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Supply Cable Cross-Section\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e16 mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Allowed Network Impedance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.24 \/ 0.22 Ω\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eHydraulics \u0026amp; Build\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eBoiler Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eG 3\/4\" (internal thread)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum System Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.3 MPa (3 bar)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum System Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.05 MPa (0.5 bar)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eBuilt-In Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5 litres, 1.5 bar precharge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eSafety Class (Ingress Protection)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eIP 22\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eHeat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eStainless steel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eDimensions \u0026amp; Warranty\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e716 x 316 x 235 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e~20.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eManufacturer Warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5 years (registration required, T\u0026amp;Cs apply)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:14.5px;\"\u003eGood to Know\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003e*Minimum cable cross-sections are the manufacturer’s stated minimums only. The cable size for your installation must be calculated separately by a qualified electrician in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e, accounting for cable type, routing and supply voltage deviation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWill my property’s electrics cope with the 14.4kW setting?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eAt 14.4kW this boiler draws up to \u003cstrong\u003e60A\u003c\/strong\u003e and requires a \u003cstrong\u003e63A MCB\u003c\/strong\u003e. A qualified electrician should carry out a full load check of the incoming supply before installation, as an upgrade to the property’s main fuse is often needed at this output.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eCan this boiler provide hot water as well as heating?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. The EHC.CS14.4KW can be installed for \u003cstrong\u003eheating only\u003c\/strong\u003e, or for combined heating and domestic hot water when wired in an \u003cstrong\u003e‘S’ Plan configuration\u003c\/strong\u003e alongside a compatible hot water cylinder and twin-channel control.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eDo I need to choose one fixed output, or can it be changed later?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eThe boiler ships with all four output settings available. The installer configures the required output (7.2, 9.6, 12 or 14.4kW) during commissioning via the DIP switches and control panel software — it is not locked to a single kW rating at the factory.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eIs a magnetic filter really mandatory?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. A magnetic filter must be fitted to the return of this boiler. This is a \u003cstrong\u003emanufacturer warranty condition\u003c\/strong\u003e, not just best practice — installing without one will void the warranty regardless of any other fault.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eIs this boiler suitable for underfloor heating?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. The adjustable flow temperature range of \u003cstrong\u003e20–85°C\u003c\/strong\u003e covers both low-temperature underfloor systems and standard radiator circuits, and the boiler is compatible with wet underfloor heating installations.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":65934532444509,"sku":"EHC.CS14.4KW","price":1240.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHCCometElectricSystemBoiler.jpg?v=1789537046"},{"product_id":"ehc-comet-12-16-20-24kw-3-phase-system-electric-boiler-ehc-cs24kw-400v","title":"EHC Comet 12\/16\/20\/24kW 3 Phase System Electric Boiler | EHC.CS24KW | 400V","description":"\u003c!-- SEO Product Name: EHC Comet 12\/16\/20\/24kW 3 Phase System Electric Boiler | EHC.CS24KW | 400V --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eEHC Comet 12\/16\/20\/24kW System Electric Boiler\u003c\/strong\u003e (EHC.CS24KW) is the highest-output model in the Comet Standard System range, built on over \u003cstrong\u003e21 years of EHC electric heating expertise\u003c\/strong\u003e. It is intended for larger domestic properties and light-commercial systems where a \u003cstrong\u003e3-phase electrical supply\u003c\/strong\u003e is available, delivering central heating and domestic hot water via an S-Plan configuration from a single wall-mounted unit.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThis model runs on a \u003cstrong\u003e3-phase 400V supply\u003c\/strong\u003e with \u003cstrong\u003efour selectable output settings — 12kW, 16kW, 20kW or 24kW\u003c\/strong\u003e — configured on-site to match the property’s heat loss and balance load evenly across all three phases. The pump, expansion vessel, automatic air vent, auto-bypass and high-current thermal cut-out are all \u003cstrong\u003efactory-fitted inside the casing\u003c\/strong\u003e, removing the need for external plumbing or pipework.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e12–24 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eSelectable Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e400V 3N~\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003e3-Phase Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e41 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eQuiet Operation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e20.5 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eBoiler Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e20–85°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eFlow Temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#00625D;\"\u003e5 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px; color:#555; margin-top:4px;\"\u003eManufacturer Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#D32F2F; margin-bottom:6px; font-size:14.5px;\"\u003eImportant Safety Information\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e Wiring Regulations. A \u003cstrong\u003e30mA RCD\u003c\/strong\u003e, dedicated local isolation and an in-line \u003cstrong\u003emagnetic filter\u003c\/strong\u003e are all mandatory — failure to fit a magnetic filter to this boiler will \u003cstrong\u003einvalidate the manufacturer’s warranty\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#E0942A; margin-bottom:6px; font-size:14.5px;\"\u003ePlease Note\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis model requires a \u003cstrong\u003e3-phase 400V electrical supply\u003c\/strong\u003e — it is not compatible with a standard single-phase domestic supply. Confirm 3-phase availability and carry out a full load check before specifying this boiler. At the 24kW setting, load current reaches \u003cstrong\u003e3 x 34.6A\u003c\/strong\u003e and requires a \u003cstrong\u003e40A MCB\u003c\/strong\u003e per phase.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eFlexible Multi-Output Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eFour selectable outputs (12, 16, 20 or 24kW) let installers range-rate the boiler on site to match the exact heat loss of larger properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eSix-Stage Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eA \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e with six-stage heating modulates output in real time, reducing electricity consumption and running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eBalanced 3-Phase Loading\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eOutput is spread evenly across all three phases, helping avoid overloading any single phase on larger installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eVirtually Silent Operation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eRated at just \u003cstrong\u003e41dB\u003c\/strong\u003e, the Comet Standard operates quietly enough for plant rooms, kitchens and utility spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eUnderfloor Heating Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eAdjustable flow temperature from \u003cstrong\u003e20–85°C\u003c\/strong\u003e makes it equally suited to underfloor heating and traditional radiator systems.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00625D; font-size:15.5px; margin-bottom:6px;\"\u003eCompact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#444; line-height:1.55;\"\u003eAll core components — pump, expansion vessel, auto-air vent and auto-bypass — are built into a single \u003cstrong\u003e716 x 316 x 235mm\u003c\/strong\u003e casing for a one-person lift and install.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eRated Power Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e12 \/ 16 \/ 20 \/ 24 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eRated Voltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e400V 3N~ (3-phase)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eOutlet Flow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e20–85°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e100°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eSound Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e41 dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum System Flow Rate\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e4.5 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eElectrical Data\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMCB Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e20 \/ 32 \/ 32 \/ 40 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eLoad Current\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e3x17.4 \/ 3x23.1 \/ 3x28.8 \/ 3x34.6 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum Supply Cable Cross-Section*\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5x2.5 \/ 5x4 \/ 5x6 mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Supply Cable Cross-Section\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5x16 mm²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum Allowed Network Impedance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.27 \/ 0.13 Ω\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eHydraulics \u0026amp; Build\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eBoiler Connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eG 3\/4\" (internal thread)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMaximum System Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.3 MPa (3 bar)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eMinimum System Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e0.05 MPa (0.5 bar)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eBuilt-In Expansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5 litres, 1.5 bar precharge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eSafety Class (Ingress Protection)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eIP 22\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eHeat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003eStainless steel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:18px; border:1px solid #D9EDEA; border-radius:6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:10px 14px;\"\u003eDimensions \u0026amp; Warranty\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e716 x 316 x 235 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F1F8F7; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e~20.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:9px 14px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; font-size:14.5px; color:#444;\"\u003eManufacturer Warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; font-size:14.5px; font-weight:700; color:#222;\"\u003e5 years (registration required, T\u0026amp;Cs apply)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:14.5px;\"\u003eGood to Know\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003e*Minimum cable cross-sections are the manufacturer’s stated minimums only, given per phase across a 5-core cable. The cable size for your installation must be calculated separately by a qualified electrician in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e, accounting for cable type, routing and supply voltage deviation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eDoes this boiler need a 3-phase supply?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. The EHC.CS24KW is a \u003cstrong\u003e3-phase 400V\u003c\/strong\u003e model and is not compatible with a standard single-phase domestic supply. If only single-phase power is available, the 2\/4\/6\/8kW or 7.2\/9.6\/12\/14.4kW Comet Standard models are the correct choice instead.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat electrical supply capacity do I need for the 24kW setting?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eAt the top 24kW output, load current reaches \u003cstrong\u003e3 x 34.6A\u003c\/strong\u003e and requires a \u003cstrong\u003e40A MCB\u003c\/strong\u003e per phase. A full load check of the property’s 3-phase supply by a qualified electrician is essential before installation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eCan this boiler provide hot water as well as heating?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. The EHC.CS24KW can be installed for \u003cstrong\u003eheating only\u003c\/strong\u003e, or for combined heating and domestic hot water when wired in an \u003cstrong\u003e‘S’ Plan configuration\u003c\/strong\u003e alongside a compatible hot water cylinder and twin-channel control.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eDo I need to choose one fixed output, or can it be changed later?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eThe boiler ships with all four output settings available. The installer configures the required output (12, 16, 20 or 24kW) during commissioning via the DIP switches and control panel software — it is not locked to a single kW rating at the factory.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eIs a magnetic filter really mandatory?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eYes. A magnetic filter must be fitted to the return of this boiler. This is a \u003cstrong\u003emanufacturer warranty condition\u003c\/strong\u003e, not just best practice — installing without one will void the warranty regardless of any other fault.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#E6F4F3; color:#00625D; font-weight:700; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eIs this boiler suitable for larger commercial-style installations?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#FFFFFF;\"\u003eThe 3-phase design and up to 24kW output make it suitable for larger domestic properties and light-commercial systems. For higher demand still, EHC also offers dedicated 3-phase commercial boiler ranges and cascade-linked multi-boiler setups.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"EHC","offers":[{"title":"Default Title","offer_id":65934533263709,"sku":"EHC.CS24KW","price":1720.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHCCometElectricSystemBoiler.jpg?v=1789537046"},{"product_id":"ehs-flex-7kw-range-rateable-electric-system-boiler-als1-1psy-7f-5-yr-warranty","title":"EHS Flex 7kW Range-Rateable Electric System Boiler | ALS1-1PSY-7F | 5-Yr Warranty","description":"\u003c!-- SEO Product Name: EHS Flex 7kW Range-Rateable Electric System Boiler | ALS1-1PSY-7F | 5-Yr Warranty --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; color:#222; line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEHS Flex 7kW Electric System Boiler\u003c\/strong\u003e is a compact, \u003cstrong\u003erange-rateable\u003c\/strong\u003e heat-only electric boiler for wet central heating or underfloor heating systems. It connects directly into existing radiator or UFH pipework in place of a gas system boiler, needs \u003cstrong\u003eno flue and no gas supply\u003c\/strong\u003e, and heats the home purely from a standard single-phase electricity supply.\u003c\/p\u003e\n\u003cp\u003eAs part of EHS's current Flex platform, this model can have its \u003cstrong\u003emaximum heating output configured by a qualified installer\u003c\/strong\u003e to match the exact heat loss of the property, rather than needing a different fixed-output boiler for every size of home. Paired with a separate unvented indirect cylinder, it can also support mains-pressure domestic hot water on smaller, lower-demand properties.\u003c\/p\u003e\n\n\u003cdiv style=\"border-top:2px solid #008377CF; margin:28px 0;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#f4fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e7 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333; margin-top:4px;\"\u003eMax heating output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#f4fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e230V\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333; margin-top:4px;\"\u003eSingle-phase supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#f4fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003eRange-Rated\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333; margin-top:4px;\"\u003eConfigurable down to 2.3kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#f4fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e19 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333; margin-top:4px;\"\u003eNet weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#f4fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e585×380×235mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333; margin-top:4px;\"\u003eH × W × D\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#f4fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e5 Yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#333; margin-top:4px;\"\u003eManufacturer warranty*\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f0faf9; border-left:4px solid #008377CF; border-radius:6px; padding:16px 18px; margin:20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eHow it fits your system\u003c\/div\u003e\n\u003cdiv style=\"color:#222;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe \u003cstrong\u003eFlex 7kW\u003c\/strong\u003e connects to existing radiator or underfloor heating flow-and-return pipework in place of a gas system boiler, with no need to resize radiators or re-pipe the property. It is \u003cstrong\u003eheating-only\u003c\/strong\u003e — domestic hot water requires a separate cylinder connected to the same circuit.\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eBecause it is \u003cstrong\u003erange-rateable\u003c\/strong\u003e, a qualified installer can set its maximum output anywhere between roughly 2.3kW and 7kW to closely match the property's heat loss, reducing short-cycling and wasted running costs compared to a fixed-output boiler that's oversized for the job.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6; border-left:4px solid #b8860b; border-radius:6px; padding:16px 18px; margin:20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b8860b; margin-bottom:6px;\"\u003eInstallation requirements\u003c\/div\u003e\n\u003cdiv style=\"color:#222;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003e\u003cstrong\u003eRange rating must only be carried out by a qualified electrical installer\u003c\/strong\u003e via EHS's online installer support portal — the cable size and circuit protection must always match the maximum output the boiler could deliver, not the de-rated setting.\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eAn \u003cstrong\u003eautomatic bypass valve (ABV)\u003c\/strong\u003e and an external \u003cstrong\u003einline magnetic filter\u003c\/strong\u003e must be fitted on every installation; omitting either can trigger boiler fault codes and will affect the manufacturer's warranty. The boiler must be filled and pressure-tested before any electrical connection is made.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e6e5; border-radius:8px; padding:16px 18px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eRange-rateable output\u003c\/div\u003e\n\u003cdiv style=\"color:#333; font-size:14.5px;\"\u003eMaximum heating power can be configured by a qualified installer from roughly 2.3kW up to the full 7kW, letting one boiler cover a wider range of heat loss calculations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e6e5; border-radius:8px; padding:16px 18px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eIntegrated pump \u0026amp; expansion vessel\u003c\/div\u003e\n\u003cdiv style=\"color:#333; font-size:14.5px;\"\u003eA circulating pump and 5-litre expansion vessel are built into the casing, along with pressure and flow sensors, reducing the ancillary parts an installer needs to source.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e6e5; border-radius:8px; padding:16px 18px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eNo flue or gas supply\u003c\/div\u003e\n\u003cdiv style=\"color:#333; font-size:14.5px;\"\u003eFully electric operation removes combustion risk entirely — no carbon monoxide exposure and far more flexibility over where the unit can be sited.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e6e5; border-radius:8px; padding:16px 18px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eTouch-screen control panel\u003c\/div\u003e\n\u003cdiv style=\"color:#333; font-size:14.5px;\"\u003eFront-mounted digital display with clear on\/off, mode, and temperature controls, plus a boiler lock to prevent unauthorised or accidental adjustment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e6e5; border-radius:8px; padding:16px 18px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eBuilt-in frost protection\u003c\/div\u003e\n\u003cdiv style=\"color:#333; font-size:14.5px;\"\u003eTwo-stage frost protection automatically runs the pump and heat exchanger if the internal temperature drops too low, protecting the system when power remains connected.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e6e5; border-radius:8px; padding:16px 18px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eCompact, wall-mounted design\u003c\/div\u003e\n\u003cdiv style=\"color:#333; font-size:14.5px;\"\u003eAt 585 × 380 × 235mm and around 19kg net, the unit mounts on six fixing points and needs only 100mm clearance on each side for servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top:2px solid #008377CF; margin:28px 0;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e6ebea; border-radius:6px; overflow:hidden; margin-bottom:22px;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003eBoiler Details\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eEHS Flex\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eElectric Heating Systems Ltd (EHS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e7kW EHS Flex System Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eSKU \/ Part Code\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e\u003cstrong\u003eALS1-1PSY-7F\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eProduct Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eElectric system boiler — heating only, range-rateable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eHeating Power\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e\n\u003cstrong\u003e7 kW\u003c\/strong\u003e maximum, single-phase (configurable from 2.3kW)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eHot Water Power\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eN\/A — heating only; requires a separate indirect cylinder for DHW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e6ebea; border-radius:6px; overflow:hidden; margin-bottom:22px;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003eElectrical \u0026amp; Installation\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eElectrical Supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e230V AC, single-phase, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eRated Current @ Full Output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e26 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eMinimum MCB \/ RCBO\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e32 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eMinimum Cable Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e6 mm² (3-core)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eRange Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eField-configurable in steps from 2.3kW to 7kW via EHS installer portal — qualified electrician only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eIP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eIPX1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eFlue Requirement\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eNone — no flue or gas connection needed\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e6ebea; border-radius:6px; overflow:hidden; margin-bottom:22px;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003ePlumbing \u0026amp; Physical\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eFlow \u0026amp; Return Connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eG3\/4\" male thread\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eOperating Water Pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e1–3 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eExpansion Vessel Capacity\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e5 litres, internal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eHeating Flow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e30–80°C (radiators) \/ 30–60°C (underfloor heating)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e585 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e380 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e235 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eNet Weight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e19 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e6ebea; border-radius:6px; overflow:hidden; margin-bottom:22px;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003eServicing \u0026amp; Support\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eAnnual Service\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eRecommended and required to maintain full warranty cover\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eRequired Ancillaries\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003eAutomatic bypass valve and external inline magnetic filter (both mandatory for warranty)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#f4fbfa; border-bottom:1px solid #e6ebea;\"\u003e\n\u003cdiv style=\"flex:0 0 42%; padding:10px 14px; font-weight:600; color:#333;\"\u003eWarranty*\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; color:#222;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e when registered with EHS within 30 days of installation (2 years parts \u0026amp; labour, plus 3 years parts only); unregistered installs default to 1 year parts \u0026amp; labour only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top:2px solid #008377CF; margin:28px 0;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-top:30px;\"\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#008377CF; margin-bottom:14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #e6ebea; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eDoes the EHS Flex 7kW boiler provide hot water on its own?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; color:#222; background:#fff;\"\u003eNo. This is a heating-only system boiler with no built-in hot water power. Domestic hot water needs a separate indirect cylinder connected to the same heating circuit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #e6ebea; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eWhat does 'range-rateable' actually mean for this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; color:#222; background:#fff;\"\u003eThe boiler's maximum heating output can be configured by a qualified installer to a lower setting than its full 7kW, so it can be matched more precisely to a property's calculated heat loss. This is done through EHS's online installer support portal and must only be carried out by a qualified electrical installer.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #e6ebea; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eDo I need to change my radiators or pipework to fit this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; color:#222; background:#fff;\"\u003eNo. It connects to existing radiator or underfloor heating flow-and-return pipework via G3\/4\" connections in place of a gas system boiler, so current radiators or UFH loops don't need to be replaced.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #e6ebea; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eWhat electrical supply does the Flex 7kW need?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; color:#222; background:#fff;\"\u003eA 230V single-phase supply with a minimum 32A MCB\/RCBO and 6mm² cable at full 7kW output. An electrician should always carry out a load and voltage test before installation to confirm the property's supply is adequate.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #e6ebea; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eIs a flue or gas connection required?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; color:#222; background:#fff;\"\u003eNo. As a fully electric boiler it needs no flue and no gas supply, which removes carbon monoxide risk and gives much greater flexibility over where it can be sited in the property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #e6ebea; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eWhat do I need to do to get the full 5-year warranty?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; color:#222; background:#fff;\"\u003eThe boiler must be registered with EHS within 30 days of installation, fitted exactly per the manufacturer's installation manual — including an automatic bypass valve and external magnetic filter — and serviced annually by a qualified engineer. Missing the registration window resets cover to 1 year parts and labour only.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":65934775714141,"sku":"ALS1-1PSY-7F","price":1100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHSPrimusElectricSystemBoiler.webp?v=1767108933"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/collections\/A_schematic_of_a_Biasi_electric_system_boiler_installation_showing_its_compact_setup.png?v=1778566351","url":"https:\/\/qualityheating.co.uk\/collections\/electric-system-boilers.oembed?page=2","provider":"AIZO Quality Heating","version":"1.0","type":"link"}