{"title":"Strom – Smart, Sustainable Electric Heating Made in the UK","description":"\u003cp data-start=\"192\" data-end=\"577\"\u003eStrom Heating Group, also known as Strom Limited, is a UK-based company specialising in electric heating systems that offer a modern, carbon-free alternative to traditional gas and oil solutions. With a focus on energy efficiency, compact design, and sustainability, it’s products are built for homes and properties looking to transition to cleaner heating technologies.\u003c\/p\u003e\n\n\u003cp data-start=\"579\" data-end=\"979\"\u003eTheir product range includes combi and heat-only electric boilers, high-efficiency unvented hot water cylinders like the Prime2o, and a selection of heating controls for full system optimisation. The boilers are designed to be smaller, quieter, and easier to install than conventional boilers — requiring no flue and integrating seamlessly into both residential and commercial settings.\u003c\/p\u003e\n\n\u003cp data-start=\"981\" data-end=\"1335\"\u003eManufactured and engineered in the UK, Strom systems are especially suitable for off-grid homes, space-limited installations, and buildings looking to pair heating with renewable energy sources such as solar panels. When combined with a 100% renewable electricity tariff, id’s solutions offer a truly sustainable path to low-carbon living.\u003c\/p\u003e\n\n\u003cp data-start=\"1337\" data-end=\"1436\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eExplore our Strom product range to upgrade your home with efficient, future-ready electric heating.\u003c\/p\u003e","products":[{"product_id":"strom-7kw-electric-combi-boiler-single-phase","title":"Strom 7kW Single Phase Electric Combi Boiler - SBSP7C","description":"\u003cdiv style=\"font-size:16px;line-height:1.6;color:#1a1a1a;font-family:Arial,sans-serif;max-width:900px;margin:0 auto;\"\u003e\n\n  \u003c!-- Intro --\u003e\n  \u003cp style=\"font-size:1.05em;margin-bottom:20px;\"\u003e\n    The \u003cstrong\u003eStrom SBSP7C 7kW Single Phase Electric Combi Boiler\u003c\/strong\u003e delivers \u003cstrong\u003ecentral heating and instant domestic hot water from a single compact unit\u003c\/strong\u003e — with no flue, no carbon monoxide risk, and no gas supply needed. Designed from the ground up to replicate the familiar experience of gas, oil or LPG boilers, it is the ideal solution for \u003cstrong\u003eoff-grid properties, gas-free homes, and spaces where a conventional boiler cannot be fitted\u003c\/strong\u003e. Running on a standard \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e and drawing just 32A, the SBSP7C is small enough to fit almost anywhere yet powerful enough to serve a compact home with \u003cstrong\u003eradiators, underfloor heating and a shower\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- Badge strip --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;\"\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003e7kW Output\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eSingle Phase 230V\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eNo Flue Required\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eZero CO Risk\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eErP Hot Water: A\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003e5-Year Warranty\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eSolar Compatible\u003c\/span\u003e\n    \u003cspan style=\"background:#008377CF;color:#fff;padding:5px 14px;border-radius:20px;font-size:0.82em;font-weight:600;\"\u003eEconomy 10 Ready\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Stat tiles --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e7kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eMax Heat \u0026amp; DHW Output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e4 L\/min\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eDHW Flow Rate (30°C Rise)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e80°C\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eMax Flow Temperature\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e\u0026gt;99%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eThermal Efficiency\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:2em;font-weight:700;line-height:1.1;\"\u003e5 Yrs\u003c\/div\u003e\n      \u003cdiv style=\"font-size:0.8em;margin-top:5px;opacity:0.9;\"\u003eWarranty (registered)\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Section: Why Electric Combi --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eWhy Choose an Electric Combi Boiler?\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:20px;margin-bottom:26px;\"\u003e\n    \u003cp style=\"margin:0 0 12px;\"\u003e\n      Electric combi boilers are the \u003cstrong\u003eclean alternative to gas for homes off the mains gas network\u003c\/strong\u003e — and increasingly popular in new builds, flats, and rural properties. Unlike oil or LPG, there are no delivery logistics, no external storage tanks, and \u003cstrong\u003eno requirement for an annual Gas Safe service\u003c\/strong\u003e. The SBSP7C combines heating and on-demand hot water in one wall-hung cabinet, \u003cstrong\u003eeliminating the need for a separate hot water cylinder\u003c\/strong\u003e in smaller applications.\n    \u003c\/p\u003e\n    \u003cp style=\"margin:0;\"\u003e\n      With \u003cstrong\u003eover 99% thermal efficiency\u003c\/strong\u003e, virtually every unit of electricity drawn from the supply becomes useful heat. Paired with a solar PV system or an Economy 10 tariff, running costs can be kept highly competitive against fossil-fuel alternatives.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Features grid --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:18px;margin-bottom:26px;\"\u003e\n    \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;\"\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eSerpentine Heat Exchanger\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eStrom's \u003cstrong\u003eproprietary serpentine heating element\u003c\/strong\u003e transfers heat across the full surface area rather than a single hot spot. Multiple independent strands share the load, \u003cstrong\u003eminimising limescale formation\u003c\/strong\u003e and extending element life significantly compared with conventional immersion-style elements.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eFully Self-Modulating\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003e\u003cstrong\u003eOutput modulates down to as little as 1kW\u003c\/strong\u003e, matching heat production precisely to demand. This avoids energy waste during mild weather and \u003cstrong\u003ereduces electricity bills\u003c\/strong\u003e compared with fixed-output boilers.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eBoth the \u003cstrong\u003ecirculation pump and expansion vessel are built in\u003c\/strong\u003e, reducing the number of external components required during installation. The boiler arrives ready to connect, saving time and materials on site.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eTouchscreen Control \u0026amp; LED Display\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eAn \u003cstrong\u003eintuitive LED digital touchscreen\u003c\/strong\u003e provides clear status information and easy temperature adjustment. The display shows the current time, allowing homeowners to confirm the programmer is running correctly at a glance.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eNo Flue — Site Almost Anywhere\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eBecause \u003cstrong\u003eelectric boilers produce no combustion gases, no flue or air supply is needed\u003c\/strong\u003e. The SBSP7C can be installed in a kitchen, airing cupboard, utility room or bedroom — anywhere a standard 230V supply is available.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eZero Carbon Monoxide Risk\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eWith \u003cstrong\u003eno combustion process whatsoever, CO is simply impossible\u003c\/strong\u003e. A significant safety advantage for flats, HMOs, and any property where CO alarm regulations and inspections are a concern.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eNear-Silent Operation\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003e\u003cstrong\u003eMinimal moving parts mean minimal noise\u003c\/strong\u003e. Unlike gas boilers that ignite and modulate a burner, the SBSP7C operates almost silently — ideal for bedrooms, home offices or noise-sensitive installations.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eCompact Wall-Hung Design\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eAt just \u003cstrong\u003e700 × 425 × 250mm\u003c\/strong\u003e, the SBSP7C is smaller than most standard gas boilers. Its slim footprint makes it suitable for tight spaces where a combi replacement was previously impossible.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eSolar \u0026amp; Economy 10 Compatible\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003e\u003cstrong\u003eCompatible with solar PV systems\u003c\/strong\u003e, the SBSP7C can use excess generation to heat your home. On \u003cstrong\u003eEconomy 10 tariffs\u003c\/strong\u003e it competes favourably against oil and LPG on running cost when managed across off-peak periods.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eFrost Protection\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eBuilt-in \u003cstrong\u003efrost protection monitors internal temperature\u003c\/strong\u003e and triggers an automatic defrost cycle when the boiler drops dangerously low — protecting pipework in unheated areas or holiday properties.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eNo Annual Service Required\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eUnlike gas appliances, \u003cstrong\u003eelectric boilers have no combustion components to check, clean or certify annually\u003c\/strong\u003e. Maintenance is limited to system pressure and inhibitor levels — \u003cstrong\u003edramatically reducing ongoing ownership costs\u003c\/strong\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"flex:1;min-width:220px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:7px;border-bottom:2px solid #008377CF;padding-bottom:6px;\"\u003eUnderfloor Heating Compatible\u003c\/div\u003e\n        \u003cp style=\"margin:0;font-size:0.93em;\"\u003eWith a \u003cstrong\u003eflow temperature range of 20°C–80°C and modulation down to 1kW\u003c\/strong\u003e, the SBSP7C works equally well with low-temperature underfloor heating circuits and conventional radiator systems.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Installer callout --\u003e\n  \u003cdiv style=\"background:#fff0f0;border-left:4px solid #cc0000;padding:14px 18px;border-radius:4px;margin-bottom:18px;\"\u003e\n    \u003cstrong style=\"color:#cc0000;\"\u003eInstaller Notice\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:0.93em;\"\u003eThis boiler \u003cstrong\u003emust be installed by a competent, certified plumber or heating engineer\u003c\/strong\u003e in accordance with the Building Regulations in force at the time of installation. Electrical connection must comply with BS 7671 and be carried out by a qualified electrician. \u003cstrong\u003eMinimum breaker size: 40A. Minimum cable size: 4mm².\u003c\/strong\u003e Strom Limited are not responsible for faulty installations performed by unqualified tradespeople.\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- DHW advisory --\u003e\n  \u003cdiv style=\"background:#fff8e1;border-left:4px solid #f59e0b;padding:14px 18px;border-radius:4px;margin-bottom:26px;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003eDHW Flow Rate Advisory\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:0.93em;\"\u003eThe 7kW single-phase unit delivers a DHW flow rate of \u003cstrong\u003e4 litres per minute at a 30°C rise\u003c\/strong\u003e — well suited to showers and basins. \u003cstrong\u003eStrom recommend selecting a 3-phase model for applications that include a bath\u003c\/strong\u003e, as the higher outputs of 18–24kW units are better matched to bath-filling demands.\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Technical spec table --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eFull Technical Specification — SBSP7C\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;overflow:hidden;margin-bottom:26px;\"\u003e\n    \u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.93em;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;width:55%;\"\u003eModel \/ Part Number\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eSBSP7C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMaximum Heat Output\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e7kW\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003ePhase \/ Supply Voltage\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eSingle Phase \/ \u003cstrong\u003e230V AC\u003c\/strong\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eCurrent Draw\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e32A\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e40A\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMinimum Cable Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e4mm²\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMax. Flow Temperature\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e80°C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMin. Flow Temperature\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e20°C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDHW Default Temperature\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e45°C (user adjustable when outlet open)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMax. Heating System Pressure\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e1.5 Bar\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMin. Heating System Pressure\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e0.5 Bar\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMax. DHW Pressure\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e6 Bar\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDHW Flow Rate (30°C Rise)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e4 litres\/min\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eHeating Connection Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e¾\" Male (flexi hoses recommended)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDHW Connection Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e½\" Male (flexi hoses recommended)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003ePRV Connection Size\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e15mm Compression (female)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003e700 × 425 × 250mm\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eErP Domestic Hot Water Rating\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u003cstrong\u003eA\u003c\/strong\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eErP Heating Rating\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eD\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eThermal Efficiency\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\u0026gt;99%\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eMin. Modulation Level\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e1kW\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eIntegrated Pump\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eIntegrated Expansion Vessel\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eFlue Required\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eNo\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eControls Interface\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eLED Digital Touchscreen\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eFrost Protection\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes — automatic defrost cycle\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eSolar PV Compatible\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eEconomy 10 Tariff Compatible\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eCylinder Compatibility\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eVented \u0026amp; unvented indirect cylinders\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eFor Indoor Use Only\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eManufacturer Warranty\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e\n\u003cstrong\u003e5 Years\u003c\/strong\u003e (registered within 45 days at stromltd.com\/guarantee)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#ffffff;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eDefault Warranty (unregistered)\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003e1 Year\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background:#f0faf9;\"\u003e\n          \u003ctd style=\"padding:9px 16px;font-weight:600;\"\u003eManufacturer\u003c\/td\u003e\n          \u003ctd style=\"padding:9px 16px;\"\u003eStrom Limited — ISO Accredited, UK\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Installation requirements --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eInstallation Requirements\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:20px;margin-bottom:26px;font-size:0.93em;\"\u003e\n    \u003cp style=\"margin:0 0 10px;\"\u003e\u003cstrong\u003eElectrical:\u003c\/strong\u003e Dedicated \u003cstrong\u003e40A MCB\u003c\/strong\u003e on a \u003cstrong\u003e4mm² cable\u003c\/strong\u003e from your consumer unit. Must be wired by a Part P qualified electrician. Confirm your existing consumer unit has capacity before ordering.\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 10px;\"\u003e\u003cstrong\u003ePlumbing:\u003c\/strong\u003e The system must be flushed to \u003cstrong\u003e10% of mains PPM (chloride and otherwise)\u003c\/strong\u003e prior to first fill. If retrofitting into an existing system, a \u003cstrong\u003epower flush must be completed\u003c\/strong\u003e to remove debris from radiators and pipework. Use flexi hoses on all connections.\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 10px;\"\u003e\u003cstrong\u003eSystem pressure:\u003c\/strong\u003e Fill the heating circuit when cold to \u003cstrong\u003e1.0–1.5 Bar\u003c\/strong\u003e. The filling loop must comply with current Water Regulations and must be removed and capped after filling.\u003c\/p\u003e\n    \u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eInhibitor:\u003c\/strong\u003e Add a suitable central heating inhibitor (e.g. Fernox F1 or equivalent) to protect the heat exchanger and system components. System water quality directly affects boiler longevity and warranty validity.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eFrequently Asked Questions\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #008377CF;border-top:none;border-radius:0 0 6px 6px;padding:8px 16px;margin-bottom:26px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan the SBSP7C replace my existing gas combi boiler?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eThe SBSP7C has been designed to replicate the combi boiler experience\u003c\/strong\u003e familiar from gas, oil or LPG systems. You will need a competent engineer to reconfigure the pipework and remove the gas components. At 7kW single phase the \u003cstrong\u003eDHW flow rate of 4 L\/min suits showers and basins well\u003c\/strong\u003e; for bath-filling applications a 3-phase model is recommended.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eDo I need a hot water cylinder with a combi boiler?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eNo — hot water is heated on demand directly from the mains cold supply\u003c\/strong\u003e; there is no storage tank or cylinder required for DHW. The SBSP7C can, however, also work in conjunction with a vented or unvented indirect cylinder for system configurations that require stored hot water.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eHow do I register for the 5-year warranty?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003eRegister at \u003cstrong\u003estromltd.com\/guarantee within 45 days of purchase\u003c\/strong\u003e using the registration card supplied in the box and the details from your original merchant invoice. Only the \u003cstrong\u003elegal owner of the building\u003c\/strong\u003e can register. If not registered within 45 days the warranty defaults to 12 months.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eIs the boiler compatible with solar panels?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e The SBSP7C is compatible with solar PV systems and can use excess generation to run the boiler, \u003cstrong\u003esignificantly reducing running costs\u003c\/strong\u003e during sunny periods. For optimum solar integration consider adding a power diverter such as a myenergi eddi to automatically redirect surplus export.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eDoes the boiler need a service every year?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003e\u003cstrong\u003eNo annual service is required.\u003c\/strong\u003e Because there are no combustion components, there is nothing equivalent to a gas boiler's annual safety inspection. Routine maintenance is limited to checking system pressure and ensuring the water inhibitor concentration remains adequate.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan I control the boiler with a room thermostat or smart thermostat?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003eYes. The SBSP7C accepts a \u003cstrong\u003estandard room thermostat connection\u003c\/strong\u003e and is compatible with a wide range of programmable and smart thermostats. Strom also offer a \u003cstrong\u003eControls Pack A bundle\u003c\/strong\u003e which includes a programmable RF room stat for wireless control.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"padding:12px 0;\"\u003e\n      \u003csummary style=\"cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhat is the default hot water temperature?\u003c\/summary\u003e\n      \u003cp style=\"margin:10px 0 0 0;font-size:0.93em;\"\u003eThe DHW temperature is set to \u003cstrong\u003e45°C by default\u003c\/strong\u003e. The user can adjust this using the increase\/decrease buttons on the touchscreen, but \u003cstrong\u003eonly while a hot water outlet is actively open\u003c\/strong\u003e — a safety feature to prevent scalding from excessive stored heat.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- Related products --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    \u003cstrong style=\"font-size:1.05em;\"\u003eFrequently Bought Together\u003c\/strong\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;border-radius:0 0 6px 6px;padding:16px;\"\u003e\n    \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;\"\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003eSmart Room Thermostat\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eProgrammable RF stat for wireless boiler control\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003emyenergi eddi Solar Diverter\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eRedirect surplus solar PV to your boiler automatically\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003eMagnetic System Filter\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eProtects the heat exchanger from debris and magnetite\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex:1;min-width:160px;background:#fff;border-radius:6px;padding:16px;\"\u003e\n        \u003cdiv style=\"font-weight:700;font-size:0.9em;color:#005c54;margin-bottom:5px;border-bottom:2px solid #008377CF;padding-bottom:5px;\"\u003eUnvented Hot Water Cylinder\u003c\/div\u003e\n        \u003cdiv style=\"font-size:0.85em;color:#444;\"\u003eFor system configurations requiring stored hot water\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954485240157,"sku":"SBSP7C","price":1150.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_ca2662e2-d9d0-46dc-abae-efede8275572.png?v=1751972890"},{"product_id":"strom-11kw-electric-combi-boiler-single-phase","title":"Strom 11kW Electric Combi Boiler Single Phase Instant Hot Water \u0026 Heating SBSP11C","description":"\u003cstyle\u003e\n  .dw-wrap{font-family:inherit;color:inherit;line-height:1.7;font-size:16px}\n  .dw-wrap p,.dw-wrap li,.dw-wrap td,.dw-wrap th{font-size:16px!important;line-height:1.7}\n  .dw-wrap h2{font-size:22px!important;font-weight:700;color:#1a3a5c;border-bottom:3px solid #008377;padding-bottom:6px;margin:2rem 0 1rem;line-height:1.3}\n  .dw-wrap h3{font-size:17px!important;font-weight:700;color:#1a3a5c;margin:1.2rem 0 0.4rem;line-height:1.4}\n  .dw-wrap p{margin:0 0 1rem}\n  .dw-wrap ul{padding-left:1.5rem;margin:0 0 1rem}\n  .dw-wrap ul li{margin-bottom:0.5rem}\n  .dw-badge{display:inline-block;font-size:13px!important;font-weight:700;border-radius:4px;padding:2px 10px;margin-right:5px;margin-bottom:4px;vertical-align:middle}\n  .dw-badge.blue{background:#008377;color:#fff}\n  .dw-badge.navy{background:#1a3a5c;color:#fff}\n  .dw-badge.teal{background:#0d9488;color:#fff}\n  .dw-badge.green{background:#1a7a3c;color:#fff}\n  .dw-badge.grey{background:#555;color:#fff}\n  .dw-intro-box{background:#e0f2fe;border-left:4px solid #008377CF;padding:1.1rem 1.4rem;border-radius:0 6px 6px 0;margin-bottom:1.5rem}\n  .dw-intro-box p{margin:0!important}\n  .dw-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:0.85rem;margin-bottom:1.2rem}\n  .dw-card{background:#e0f2fe;border:1px solid #90caf9;border-radius:6px;padding:1rem 1.1rem;line-height:1.6}\n  .dw-card strong{display:block;color:#1a3a5c;margin-bottom:0.35rem;font-size:16px!important}\n  .dw-info-box{background:#f0fdf4;border:1px solid #86efac;border-radius:6px;padding:1rem 1.2rem;margin:1.2rem 0}\n  .dw-info-box p{margin:0 0 0.5rem!important;color:#065f46;font-weight:700}\n  .dw-comp-box{background:#fff3cd;border:1px solid #ffc107;border-radius:5px;padding:0.9rem 1.1rem;margin:0.8rem 0}\n  .dw-spec-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}\n  .dw-spec-table th{background:#1a3a5c;color:#fff!important;text-align:left;padding:0.7rem 1rem;font-weight:700;font-size:16px!important}\n  .dw-spec-table td{padding:0.6rem 1rem;border-bottom:1px solid #bde0f5;vertical-align:top;font-size:16px!important}\n  .dw-spec-table tr:nth-child(even) td{background:#e0f2fe}\n  .dw-spec-table td:first-child{font-weight:600;color:#111;width:44%}\n  .dw-faq-item{border-bottom:1px solid #bde0f5;padding:0.9rem 0}\n  .dw-faq-item:last-child{border-bottom:none}\n  .dw-faq-item strong{color:#1a3a5c;font-size:16px!important;display:block;margin-bottom:0.3rem}\n  .dw-contents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0.6rem;margin-bottom:1.2rem}\n  .dw-contents-item{background:#f0f9ff;border:1px solid #bde0f5;border-radius:5px;padding:0.6rem 0.9rem;font-size:15px!important}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dw-wrap\"\u003e\n\n  \u003cdiv style=\"margin-bottom:1rem\"\u003e\n    \u003cspan class=\"dw-badge blue\"\u003eSBSP11C\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eStrom\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003e11 kW\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003eElectric Combi\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eSingle Phase\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eInstant Hot Water\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eStrom 11kW Electric Combi Boiler – Single Phase (SBSP11C)\u003c\/strong\u003e — Compact electric combi boiler providing central heating \u0026amp; instant hot water up to 5.5 l\/min | 11 kW output on 230 V single-phase | Touchscreen controls \u0026amp; LED display | Integrated pump \u0026amp; expansion vessel | No flue, no carbon monoxide risk | Near-silent operation | Solar-compatible \u0026amp; underfloor heating ready | 5-year warranty (registration required) | Ideal for small to medium homes or apartments\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ Flue-free, zero-emission heating \u0026amp; hot water – perfect for gas-free homes or off-grid properties\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003eRuns on standard single-phase 230 V supply (50 A breaker, 10 mm² cable recommended). No gas supply or flue needed — zero CO risk. High DHW flow rate suits 1–2 bathroom properties. Compatible with solar PV diverters \u0026amp; Economy 10 tariffs for maximum savings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe Strom 11kW Electric Combi Boiler (SBSP11C) is a compact, high-efficiency electric combi unit that delivers reliable central heating and instant domestic hot water without a separate cylinder or hot water tank. With 11 kW output on single-phase 230 V, it provides up to 5.5 litres per minute of hot water at a 30 °C rise — perfect for small to medium homes, apartments, or properties with 1–2 bathrooms and moderate simultaneous demand.\u003c\/p\u003e\n\n  \u003cp\u003eFeaturing intuitive touchscreen digital controls with LED display, advanced serpentine heating elements for rapid heat transfer, integrated circulation pump and expansion vessel, the boiler operates almost silently (15 dB sound pressure level) thanks to minimal moving parts. No flue or chimney required — completely emission-free and carbon monoxide safe. Fully compatible with solar PV systems (via diverter), underfloor heating, and smart tariffs (Economy 10), it offers a modern, low-maintenance heating solution for homes transitioning away from gas or oil.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the Strom 11kW Electric Combi Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstant Hot Water \u0026amp; Heating in One Unit\u003c\/strong\u003e — Combi design eliminates need for hot water cylinder — saves space \u0026amp; installation costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlue-Free \u0026amp; Zero Emissions\u003c\/strong\u003e — No gas, no flue, no CO risk — safe for any property, including new-builds or urban retrofits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNear-Silent Operation\u003c\/strong\u003e — Only 15 dB — quieter than a whisper — ideal for installation near living areas or bedrooms.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchscreen Controls\u003c\/strong\u003e — Modern digital interface for easy temperature adjustment, scheduling \u0026amp; status monitoring.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Vessel\u003c\/strong\u003e — All-in-one system — simplifies plumbing \u0026amp; reduces external components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSolar \u0026amp; Economy Tariff Ready\u003c\/strong\u003e — Pair with PV diverter or Economy 10 for significantly reduced running costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5-Year Warranty\u003c\/strong\u003e — Register online for full coverage — long-term peace of mind.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"dw-grid\"\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003e11 kW Output\u003c\/strong\u003eSuitable single-phase performance — ideal for small to medium homes.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eInstant DHW Flow\u003c\/strong\u003eUp to 5.5 l\/min at 30 °C rise — fast filling sinks \u0026amp; powerful showers.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eTouchscreen \u0026amp; LED Display\u003c\/strong\u003eIntuitive digital controls for precise temperature \u0026amp; timer settings.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/strong\u003eCompact all-in-one design — fewer external parts \u0026amp; easier install.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNo Flue or CO Risk\u003c\/strong\u003eEmission-free electric operation — safe for any property.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNear-Silent Running\u003c\/strong\u003eOnly 15 dB — suitable for quiet environments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eSolar PV Compatible\u003c\/strong\u003eUse with diverter to heat water for free using surplus solar.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"dw-spec-table\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMPN \/ SKU\u003c\/td\u003e\n\u003ctd\u003eSBSP11C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5060438331966 \/ 5060797570013\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e230 V AC, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e48 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Breaker\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Cable Size\u003c\/td\u003e\n\u003ctd\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax DHW Pressure\u003c\/td\u003e\n\u003ctd\u003e6.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd\u003e80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDHW Flow Rate @ 30 °C Rise\u003c\/td\u003e\n\u003ctd\u003e5.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003eHeating: 3\/4\" Male, PRV: 1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e700 × 425 × 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eErP Rating (Heating \/ DHW)\u003c\/td\u003e\n\u003ctd\u003eD \/ A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cdiv class=\"dw-contents-grid\"\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ 1 × Strom 11kW Electric Combi Boiler (SBSP11C)\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Wall fixings \u0026amp; mounting guide\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Installation \u0026amp; user manual\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Installation by qualified electrician\/plumber per BS 7671 \u0026amp; building regulations. Recommended 50 A breaker \u0026amp; 10 mm² cable. Compatible with solar PV diverters, Economy 10 tariffs, underfloor heating \u0026amp; most UK domestic systems. Register online for full 5-year warranty. No flue or gas supply required — zero CO risk.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it require a flue or gas connection?\u003c\/strong\u003e\n    No — 100% electric operation. No flue, no gas supply, no carbon monoxide risk — safe for any property.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat size property is this suitable for?\u003c\/strong\u003e\n    Ideal for small to medium homes or apartments with 1–2 bathrooms and moderate hot water demand (5.5 l\/min @ 30 °C rise). For larger properties consider the 14.4 kW model.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it work with solar panels?\u003c\/strong\u003e\n    Yes — pair with a solar diverter to heat water using surplus PV generation — significantly reduces running costs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow quiet is the boiler?\u003c\/strong\u003e\n    Extremely quiet — only 15 dB sound pressure level — suitable for installation near living areas or bedrooms.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat electrical supply is needed?\u003c\/strong\u003e\n    Single-phase 230 V, 48 A draw. Requires 50 A breaker \u0026amp; minimum 10 mm² cable — consult electrician for load check.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs there a warranty?\u003c\/strong\u003e\n    Yes — 5 years manufacturer warranty (registration required on Strom website). Covers manufacturing defects.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it supply underfloor heating?\u003c\/strong\u003e\n    Yes — fully compatible with underfloor systems (max flow temp 80 °C). Low running costs when paired with Economy tariffs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWho installs it?\u003c\/strong\u003e\n    Qualified electrician \u0026amp; plumber per BS 7671 \u0026amp; building regulations. Full electrical \u0026amp; plumbing checks required before use.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954495529309,"sku":"SBSP11C","price":1270.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_dca31396-49d4-4bc4-8e02-090258499d18.png?v=1751972915"},{"product_id":"strom-14-4kw-electric-combi-boiler-single-phase","title":"Strom 14.4kW Electric Combi Boiler Single Phase Instant Hot Water \u0026 Heating SBSP15C","description":"\u003cstyle\u003e\n  .dw-wrap{font-family:inherit;color:inherit;line-height:1.7;font-size:16px}\n  .dw-wrap p,.dw-wrap li,.dw-wrap td,.dw-wrap th{font-size:16px!important;line-height:1.7}\n  .dw-wrap h2{font-size:22px!important;font-weight:700;color:#1a3a5c;border-bottom:3px solid #008377;padding-bottom:6px;margin:2rem 0 1rem;line-height:1.3}\n  .dw-wrap h3{font-size:17px!important;font-weight:700;color:#1a3a5c;margin:1.2rem 0 0.4rem;line-height:1.4}\n  .dw-wrap p{margin:0 0 1rem}\n  .dw-wrap ul{padding-left:1.5rem;margin:0 0 1rem}\n  .dw-wrap ul li{margin-bottom:0.5rem}\n  .dw-badge{display:inline-block;font-size:13px!important;font-weight:700;border-radius:4px;padding:2px 10px;margin-right:5px;margin-bottom:4px;vertical-align:middle}\n  .dw-badge.blue{background:#008377;color:#fff}\n  .dw-badge.navy{background:#1a3a5c;color:#fff}\n  .dw-badge.teal{background:#0d9488;color:#fff}\n  .dw-badge.green{background:#1a7a3c;color:#fff}\n  .dw-badge.grey{background:#555;color:#fff}\n  .dw-intro-box{background:#e0f2fe;border-left:4px solid #008377CF;padding:1.1rem 1.4rem;border-radius:0 6px 6px 0;margin-bottom:1.5rem}\n  .dw-intro-box p{margin:0!important}\n  .dw-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:0.85rem;margin-bottom:1.2rem}\n  .dw-card{background:#e0f2fe;border:1px solid #90caf9;border-radius:6px;padding:1rem 1.1rem;line-height:1.6}\n  .dw-card strong{display:block;color:#1a3a5c;margin-bottom:0.35rem;font-size:16px!important}\n  .dw-info-box{background:#f0fdf4;border:1px solid #86efac;border-radius:6px;padding:1rem 1.2rem;margin:1.2rem 0}\n  .dw-info-box p{margin:0 0 0.5rem!important;color:#065f46;font-weight:700}\n  .dw-comp-box{background:#fff3cd;border:1px solid #ffc107;border-radius:5px;padding:0.9rem 1.1rem;margin:0.8rem 0}\n  .dw-spec-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}\n  .dw-spec-table th{background:#1a3a5c;color:#fff!important;text-align:left;padding:0.7rem 1rem;font-weight:700;font-size:16px!important}\n  .dw-spec-table td{padding:0.6rem 1rem;border-bottom:1px solid #bde0f5;vertical-align:top;font-size:16px!important}\n  .dw-spec-table tr:nth-child(even) td{background:#e0f2fe}\n  .dw-spec-table td:first-child{font-weight:600;color:#111;width:44%}\n  .dw-faq-item{border-bottom:1px solid #bde0f5;padding:0.9rem 0}\n  .dw-faq-item:last-child{border-bottom:none}\n  .dw-faq-item strong{color:#1a3a5c;font-size:16px!important;display:block;margin-bottom:0.3rem}\n  .dw-contents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0.6rem;margin-bottom:1.2rem}\n  .dw-contents-item{background:#f0f9ff;border:1px solid #bde0f5;border-radius:5px;padding:0.6rem 0.9rem;font-size:15px!important}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dw-wrap\"\u003e\n\n  \u003cdiv style=\"margin-bottom:1rem\"\u003e\n    \u003cspan class=\"dw-badge blue\"\u003eSBSP15C\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eStrom\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003e14.4 kW\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003eElectric Combi\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eSingle Phase\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eInstant Hot Water\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eStrom 14.4kW Electric Combi Boiler – Single Phase (SBSP15C)\u003c\/strong\u003e — Powerful electric combi boiler delivering central heating \u0026amp; instant hot water up to 7 l\/min | 14.4 kW output on 230 V single-phase | Touchscreen controls \u0026amp; LED display | Integrated pump \u0026amp; expansion vessel | No flue, no carbon monoxide risk | Near-silent operation | Solar-compatible \u0026amp; underfloor heating ready | 5-year warranty (registration required) | Ideal for larger homes or high hot water demand properties\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ Flue-free, emission-free alternative to gas\/oil – perfect for off-grid, new-build or retrofit homes\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003eRuns on standard single-phase 230 V supply (63 A breaker, 10 mm² cable recommended). No gas supply or flue needed — zero CO risk. High DHW flow rate suits larger properties. Compatible with solar PV diverters \u0026amp; Economy 10 tariffs for maximum savings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe Strom 14.4kW Electric Combi Boiler (SBSP15C) is a compact, high-performance electric combi unit that provides reliable central heating and instant domestic hot water without the need for a separate cylinder or hot water tank. With 14.4 kW output on single-phase 230 V, it delivers up to 7 litres per minute of hot water at a 30 °C rise — ideal for larger family homes, properties with multiple bathrooms or higher simultaneous demand.\u003c\/p\u003e\n\n  \u003cp\u003eFeaturing advanced touchscreen digital controls with LED display, serpentine heating elements for efficient heat transfer, integrated circulation pump and expansion vessel, the boiler is exceptionally quiet (15 dB sound pressure level) thanks to minimal moving parts. No flue or chimney required — completely emission-free and carbon monoxide safe. Compatible with solar PV systems (via diverter), underfloor heating, and smart tariffs (Economy 10), it offers a future-proof, low-maintenance heating solution for homes moving away from gas or oil.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the Strom 14.4kW Electric Combi Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstant Hot Water \u0026amp; Heating in One Unit\u003c\/strong\u003e — Combi design eliminates need for hot water cylinder — saves space \u0026amp; installation costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlue-Free \u0026amp; Zero Emissions\u003c\/strong\u003e — No gas, no flue, no CO risk — perfect for new-builds, off-grid properties or urban retrofits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNear-Silent Operation\u003c\/strong\u003e — Only 15 dB — quieter than a whisper — ideal for living areas or bedrooms.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchscreen Controls\u003c\/strong\u003e — Intuitive LED display \u0026amp; digital interface for easy temperature \u0026amp; timer adjustments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Vessel\u003c\/strong\u003e — All-in-one system — simplifies plumbing \u0026amp; reduces external components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSolar \u0026amp; Economy Tariff Ready\u003c\/strong\u003e — Pair with PV diverter or Economy 10 for massive running cost savings.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5-Year Warranty\u003c\/strong\u003e — Register online for full coverage — long-term peace of mind.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"dw-grid\"\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003e14.4 kW Output\u003c\/strong\u003ePowerful single-phase performance — suits larger homes \u0026amp; high DHW demand.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eInstant DHW Flow\u003c\/strong\u003eUp to 7 l\/min at 30 °C rise — fast filling baths \u0026amp; powerful showers.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eTouchscreen \u0026amp; LED Display\u003c\/strong\u003eModern digital controls for precise temperature \u0026amp; scheduling.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/strong\u003eCompact all-in-one design — fewer external parts \u0026amp; easier install.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNo Flue or CO Risk\u003c\/strong\u003eEmission-free electric operation — safe for any property.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNear-Silent Running\u003c\/strong\u003eOnly 15 dB — ideal for quiet environments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eSolar PV Compatible\u003c\/strong\u003eUse with diverter to heat water for free using surplus solar.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"dw-spec-table\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMPN \/ SKU\u003c\/td\u003e\n\u003ctd\u003eSBSP15C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5060438331973 \/ 5060797570029\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e14.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e230 V AC, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e62 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Breaker\u003c\/td\u003e\n\u003ctd\u003e63 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Cable Size\u003c\/td\u003e\n\u003ctd\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax DHW Pressure\u003c\/td\u003e\n\u003ctd\u003e6.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd\u003e80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDHW Flow Rate @ 30 °C Rise\u003c\/td\u003e\n\u003ctd\u003e7 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003eHeating: 3\/4\" Male, PRV: 1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e700 × 425 × 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eErP Rating (Heating \/ DHW)\u003c\/td\u003e\n\u003ctd\u003eD \/ A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cdiv class=\"dw-contents-grid\"\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ 1 × Strom 14.4kW Electric Combi Boiler (SBSP15C)\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Wall fixings \u0026amp; mounting guide\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Installation \u0026amp; user manual\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Installation by qualified electrician\/plumber per BS 7671 \u0026amp; building regulations. Recommended 63 A breaker \u0026amp; 10 mm² cable. Compatible with solar PV diverters, Economy 10 tariffs, underfloor heating \u0026amp; most UK domestic systems. Register online for full 5-year warranty. No flue or gas supply required — zero CO risk.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it need a flue or gas connection?\u003c\/strong\u003e\n    No — 100% electric operation. No flue, no gas supply, no carbon monoxide risk — safe for any property.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat size property is this suitable for?\u003c\/strong\u003e\n    Ideal for larger homes or properties with higher hot water demand (7 l\/min @ 30 °C rise). For very large homes consider 3-phase models or multiple units.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it work with solar panels?\u003c\/strong\u003e\n    Yes — pair with a solar diverter to heat water using surplus PV generation — significantly reduces running costs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow quiet is the boiler?\u003c\/strong\u003e\n    Extremely quiet — only 15 dB sound pressure level — suitable for installation near living areas or bedrooms.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat electrical supply is needed?\u003c\/strong\u003e\n    Single-phase 230 V, 62 A draw. Requires 63 A breaker \u0026amp; minimum 10 mm² cable — consult electrician for load check.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs there a warranty?\u003c\/strong\u003e\n    Yes — 5 years manufacturer warranty (registration required on Strom website). Covers manufacturing defects.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it supply underfloor heating?\u003c\/strong\u003e\n    Yes — fully compatible with underfloor systems (max flow temp 80 °C). Low running costs when paired with Economy tariffs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWho installs it?\u003c\/strong\u003e\n    Qualified electrician \u0026amp; plumber per BS 7671 \u0026amp; building regulations. Full electrical \u0026amp; plumbing checks required before use.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954497560925,"sku":"SBSP15C","price":1330.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"},{"product_id":"strom-6kw-electric-heat-only-boiler-150l-pre-plumbed-indirect-cylinder","title":"Strom 6kW Electric Heat Only Boiler \u0026 150L Pre-Plumbed Indirect Cylinder – SBSP6H150PP","description":"\u003c!-- SEO Product Name: Strom 6kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder – SBSP6H150PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 6kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP6H150PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e6kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e150L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e1–2 bedroom property (smaller flat or well-insulated terrace)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e6kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e150L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e6kWkW heat-only boiler is mounted directly onto the outside of the 150L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e6kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e26A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2.5 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e150L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e147 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e48 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e196 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1.32 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1075 × 580 × 660 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP6H150PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 6kWkW boiler require?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 6kWkW boiler draws \u003cstrong\u003e26AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e32AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e2.5 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 6kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e6kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e150L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954525413725,"sku":"SBSP6H150PP","price":2100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1_4dbd0339-3d41-4201-b5fa-929725ce7945.png?v=1751977058"},{"product_id":"strom-9kw-electric-heat-only-boiler-150l-pre-plumbed-indirect-cylinder","title":"Strom 9kW Electric Heat Only Boiler \u0026 150L Pre-Plumbed Indirect Cylinder – SBSP9H150P","description":"\u003c!-- SEO Product Name: Strom 9kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder – SBSP9H150PP --\u003e\n\u003cmeta charset=\"UTF-8\"\u003e\u003cmeta name=\"viewport\" content=\"width=device-width,initial-scale=1\"\u003e\u003ctitle\u003eStrom 9kW + 150L Pre-Plumbed Boiler\u003c\/title\u003e\u003cdiv style=\"font-size:16px;font-family:'Segoe UI',Helvetica,Arial,sans-serif;color:#222;background:#fff;max-width:900px;line-height:1.5;\"\u003e\n\u003cp style=\"font-size:16px;line-height:1.75;color:#333;margin:0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 9kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP9H150PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e9kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e150L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e2–3 bedroom property (well-insulated semi or end-terrace)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"background:#008377;color:#fff;border-radius:8px;padding:14px 16px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:800;line-height:1;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;opacity:.85;margin-top:4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#005c54;color:#fff;border-radius:8px;padding:14px 16px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:800;line-height:1;\"\u003e150L\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;opacity:.85;margin-top:4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377;color:#fff;border-radius:8px;padding:14px 16px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:800;line-height:1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;opacity:.85;margin-top:4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#005c54;color:#fff;border-radius:8px;padding:14px 16px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:800;line-height:1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;opacity:.85;margin-top:4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377;color:#fff;border-radius:8px;padding:14px 16px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:800;line-height:1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;opacity:.85;margin-top:4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#005c54;color:#fff;border-radius:8px;padding:14px 16px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:800;line-height:1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;opacity:.85;margin-top:4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e1;border-left:4px solid #f0a500;border-radius:0 8px 8px 0;padding:14px 18px;margin:6px 0 16px;font-size:15px;color:#5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e1;border-left:4px solid #f0a500;border-radius:0 8px 8px 0;padding:14px 18px;margin:6px 0 16px;font-size:15px;color:#5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;color:#005c54;border-bottom:3px solid #008377;padding-bottom:8px;margin:28px 0 14px;text-transform:uppercase;letter-spacing:.05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#e6f4f3;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe \u003cstrong\u003e9kWkW heat-only boiler is mounted directly onto the outside of the 150L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#f8f8f8;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#e6f4f3;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#f8f8f8;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#e6f4f3;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#f8f8f8;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#e6f4f3;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#f8f8f8;border-left:4px solid #008377;border-radius:0 6px 6px 0;margin-bottom:8px;\"\u003e\n\u003cdiv style=\"flex-shrink:0;width:30px;height:30px;background:#008377;border-radius:50%;display:flex;align-items:center;justify-content:center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top:8px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;color:#005c54;border-bottom:3px solid #008377;padding-bottom:8px;margin:28px 0 14px;text-transform:uppercase;letter-spacing:.05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin-bottom:24px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-family:'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eBoiler\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e9kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e41A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e6 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eCylinder\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e150L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e147 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e48 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e196 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e1.32 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e1075 × 580 × 660 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eSBSP9H150PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:46%;border-bottom:1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;color:#005c54;border-bottom:3px solid #008377;padding-bottom:8px;margin:28px 0 14px;text-transform:uppercase;letter-spacing:.05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 9kWkW boiler require?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 9kWkW boiler draws \u003cstrong\u003e41AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e50AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e6 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eNo. The Strom 9kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eThe unit includes: \u003cstrong\u003e9kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e150L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;color:#005c54;border-bottom:3px solid #008377;padding-bottom:8px;margin:28px 0 14px;text-transform:uppercase;letter-spacing:.05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-bottom:10px;\"\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;padding:16px 18px;text-align:center;background:#f5fbfa;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;color:#666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;padding:16px 18px;text-align:center;background:#f5fbfa;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;color:#666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;padding:16px 18px;text-align:center;background:#f5fbfa;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;color:#666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;padding:16px 18px;text-align:center;background:#f5fbfa;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;color:#666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954541896029,"sku":"SBSP9H150PP","price":2200.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1_da3c3387-0be2-4452-94fe-52061684cefd.png?v=1751976983"},{"product_id":"strom-11kw-electric-heat-only-boiler-150l-pre-plumbed-indirect-cylinder","title":"Strom 11kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder – SBSP11H150PP","description":"\u003c!-- SEO Product Name: Strom 11kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder – SBSP11H150PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 11kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP11H150PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e11kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e150L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e3–4 bedroom property (semi-detached or detached, average insulation)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e11kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e150L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e11kWkW heat-only boiler is mounted directly onto the outside of the 150L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e11kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e48A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e150L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e147 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e48 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e196 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1.32 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1075 × 580 × 660 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP11H150PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 11kWkW boiler require?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 11kWkW boiler draws \u003cstrong\u003e48AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e63AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e10 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 11kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e11kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e150L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954553561437,"sku":"SBSP11H150PP","price":2192.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1_bbd4a858-d52b-46f2-892b-61c3eba8cc90.png?v=1751976931"},{"product_id":"strom-14-4kw-electric-heat-only-boiler-150l-pre-plumbed-indirect-cylinder","title":"Strom 14.4kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder – SBSP15H150PP","description":"\u003c!-- SEO Product Name: Strom 14.4kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder – SBSP15H150PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 14.4kW Electric Heat-Only Boiler with 150L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP15H150PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e14.4kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e150L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e4+ bedroom property (larger detached, higher heat demand or commercial light use)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e14.4kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e150L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e14.4kWkW heat-only boiler is mounted directly onto the outside of the 150L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e14.4kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e62A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e150L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e147 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e48 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e196 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1.32 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1075 × 580 × 660 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP15H150PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 14.4kWkW boiler require?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 14.4kWkW boiler draws \u003cstrong\u003e62AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e63AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e10 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 14.4kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e14.4kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e150L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954558738781,"sku":"SBSP15H150PP","price":2400.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1.png?v=1768820651"},{"product_id":"strom-7kw-electric-system-boiler-single-phase","title":"Strom 7kW Single Phase Electric System Boiler SBSP7S — No Flue Off-Grid UFH Vented Unvented Cylinder Compatible","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eStrom 7kW Single Phase Electric System Boiler\u003c\/strong\u003e is a \u003cstrong\u003ecompact, fully self-contained central heating boiler\u003c\/strong\u003e with an integrated pump, expansion vessel, and a unique multi-strand heat exchanger — designed from the ground up to be familiar to installers with experience of gas, oil, or LPG systems. It connects to an indirect hot water cylinder (vented or unvented) for domestic hot water, and circulates water around a conventional radiator or underfloor heating circuit without requiring a flue, gas supply, or annual Gas Safe inspection. \u003cstrong\u003eSuitable for all off-gas-grid properties\u003c\/strong\u003e and for gas conversions where a flue route is not available. Fully self-modulating — the boiler steps down to as little as 1kW, reducing running costs on mild days and on time-of-use tariffs such as Economy 10. \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e when registered within 45 days of purchase.\n  \u003c\/p\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ──────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Qualified Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e working with a qualified heating engineer. The electrical installation must comply with BS 7671 (IET Wiring Regulations) and Part P of the Building Regulations. A \u003cstrong\u003eminimum 40A MCB and 4mm² cable\u003c\/strong\u003e are required on a dedicated circuit from the consumer unit. The boiler requires a double-pole isolation switch. Flexi hoses (¾\") are recommended for the primary heating connections. Fixings are not supplied.\n  \u003c\/div\u003e\n\n  \u003c!-- ── TEAL CYLINDER \/ HOT WATER CALLOUT ──────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ System Boiler — Cylinder Required for Hot Water\u003c\/strong\u003e\u003cbr\u003e\n    The Strom 7kW is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e: it heats the central heating circuit and an indirect hot water cylinder for DHW. \u003cstrong\u003eA separate hot water cylinder is required\u003c\/strong\u003e — it is not a combi boiler and does not produce instantaneous hot water. It is compatible with both \u003cstrong\u003evented (gravity-fed) and unvented (mains-pressure) indirect cylinders\u003c\/strong\u003e. For a complete heating and hot water solution, pair with an appropriate indirect cylinder and wiring centre for zone control.\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e7 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSingle phase 230V\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eNo flue\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eSite anywhere\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e~100%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficient\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eModulates\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDown to 1kW\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e5-year\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Multi-Strand Heat Exchanger — Self-Modulating to 1kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWhere most electric boiler competitors use a single heating element strand, the Strom uses \u003cstrong\u003emultiple independent heating strands\u003c\/strong\u003e within a single heat exchanger unit — each strand individually controlled. This enables \u003cstrong\u003efully self-modulating output from as little as 1kW up to 7kW\u003c\/strong\u003e, stepping in fine increments to match demand precisely. On mild days or in well-insulated properties, the boiler runs at a fraction of its rated output rather than cycling on\/off at full power — reducing electricity consumption and improving comfort stability. Modulation also reduces thermal stress on the element, extending component life.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — No Gas — No Annual Safety Certificate\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThere are \u003cstrong\u003eno combustion gases, no flue terminal required\u003c\/strong\u003e, and no obligation to obtain an annual Gas Safe safety certificate. The boiler can be installed in any interior location where an electrical supply can be run — kitchen, utility room, airing cupboard, or garage — regardless of proximity to an external wall. This removes the most common constraint in boiler installation and is particularly important in \u003cstrong\u003elisted buildings, conservation areas, and flats\u003c\/strong\u003e where flue positions are restricted or prohibited by planning conditions.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Integrated Pump, Expansion Vessel \u0026amp; Filter\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Strom system boiler contains \u003cstrong\u003epump, expansion vessel, and a magnetic system filter\u003c\/strong\u003e within the compact 700 × 425 × 250mm body — no separate sealed system kit, external pump, or expansion vessel is required. Compared to a heat-only boiler, this dramatically simplifies installation and reduces the number of external fittings in the airing cupboard or plant room. The \u003cstrong\u003eintegrated filter\u003c\/strong\u003e captures ferrous debris from the heating circuit, protecting the heat exchanger from sludge accumulation without requiring a separate magnetic filter to be fitted to the pipework.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ UFH, Radiators \u0026amp; Vented or Unvented Cylinders\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Strom 7kW is compatible with \u003cstrong\u003econventional panel radiator circuits, underfloor heating (wet), and both vented and unvented indirect hot water cylinders\u003c\/strong\u003e. The adjustable flow temperature range of 20–80°C means it can supply the lower flow temperatures required by underfloor heating manifolds (typically 35–50°C) as well as the higher temperatures needed for radiators in less well-insulated properties. A single wiring centre (S-plan or Y-plan) provides zone control between heating and hot water when combined with a cylinder thermostat and motorised zone valves.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Touch Screen — Near-Silent Operation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003etouch screen control panel\u003c\/strong\u003e provides direct access to flow temperature setting, operating mode selection, and system pressure display without requiring an external controller for basic operation. With \u003cstrong\u003eminimal moving parts\u003c\/strong\u003e — the only significant moving component is the circulation pump — the Strom operates near-silently compared to gas boilers with their combustion fan, ignition sequence, and flue gas noise. This makes it suitable for installation adjacent to living areas, bedrooms, or in open-plan properties where boiler noise would be intrusive.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Economy Tariff Compatible — Off-Grid Ideal\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWhen paired with a hot water cylinder and timed on a \u003cstrong\u003etime-of-use tariff\u003c\/strong\u003e (Economy 10, Octopus Go, Agile), the Strom 7kW system boiler is a competitive heating solution for off-grid properties that would otherwise rely on oil or LPG. The cylinder stores hot water heated during cheap-rate periods; the boiler's modulating output means the heating circuit can also be programmed to run primarily during low-rate windows. \u003cstrong\u003e100% renewable electricity tariffs\u003c\/strong\u003e make this the lowest carbon heating option available for off-gas-grid homes without a heat pump.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — Strom 7kW Single Phase (SBSP7S)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStrom Limited (UK)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eModel Code\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSBSP7S \/ WBSP7S\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eElectric system boiler (cylinder required for DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Heating Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e7 kW\u003c\/strong\u003e — modulates down to 1kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase 230V AC, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLoad Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum MCB \/ Breaker\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e40A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e4mm²\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlow Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C – 80°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. System Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin. System Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" Male BSP (flexi hoses recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15mm compression female\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegral Components\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003ePump · expansion vessel · magnetic system filter · touch screen\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCylinder Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eVented indirect · unvented indirect\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e700 × 425 × 250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eErP Heating Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e5 years\u003c\/strong\u003e — must register at stromltd.com within 45 days of purchase. Defaults to 1 year if not registered.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs 7kW enough to heat my property?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003e7kW is sufficient for a well-insulated property with a heat loss up to approximately 7kW — typically a \u003cstrong\u003e1–3 bedroom flat or smaller house\u003c\/strong\u003e. The starting point is always a heat loss calculation to BS EN 12831, which a heating engineer can carry out. As a rough rule of thumb, a modern well-insulated 2-bedroom house in England might have a heat loss of around 3–5kW, meaning the 7kW model has headroom to spare. For larger or older properties with higher heat loss, the Strom range also offers 11kW and 14.4kW single-phase models. Because the boiler is fully self-modulating, it will run efficiently even if the 7kW rating is significantly higher than the actual heat loss — it simply modulates down rather than cycling.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eDoes this boiler need an annual service?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eUnlike gas or oil boilers, the Strom electric system boiler does \u003cstrong\u003enot require a mandatory annual safety service\u003c\/strong\u003e — there are no combustion components, no heat exchanger flue gases, and no Carbon Monoxide risk that drives the legal servicing requirement for fossil fuel appliances. However, Strom recommend \u003cstrong\u003eperiodic maintenance checks\u003c\/strong\u003e by a qualified person — typically every two to three years — covering system pressure, expansion vessel pre-charge, filter cleaning, and a check of the electrical connections. The integrated magnetic filter should be checked and cleaned annually, and the heating system should be treated with corrosion inhibitor. Keeping Benchmark or equivalent service records is good practice and supports any warranty claim.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan I use this with solar panels?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Strom electric system boiler is \u003cstrong\u003edirectly compatible with solar PV systems\u003c\/strong\u003e. When the property generates more solar electricity than it consumes, a solar diverter (such as the Eddi from myenergi, or an iBoost) can redirect the surplus export to the boiler — running the heating circuit and\/or charging a hot water cylinder with otherwise-wasted generation. The boiler's self-modulation is particularly useful in this context: a diverter can instruct the boiler to consume exactly the surplus available (from 1kW up to 7kW) rather than needing a fixed large load. This is one of the most effective ways to maximise self-consumption on a solar PV installation.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat is the warranty and how do I register?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Strom 7kW system boiler carries a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e, subject to registration and Strom's terms and conditions. Registration must be completed \u003cstrong\u003ewithin 45 days of purchase\u003c\/strong\u003e at stromltd.com using the registration card supplied with the boiler. If the boiler is not registered within 45 days, the warranty defaults to 1 year. The 5-year warranty covers manufacturing defects in materials and workmanship. The guarantee is held by the original purchasing homeowner and is not transferable. Annual servicing records — while not strictly mandatory — will support any warranty claim and demonstrate the system has been properly maintained.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan I replace my existing gas or oil boiler with this?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Strom system boiler is designed to connect to \u003cstrong\u003eexisting radiator and pipework\u003c\/strong\u003e without replacement. The existing radiators, pipework, and indirect cylinder can generally remain in place. The key changes are: removing the old boiler and flue, upgrading the electrical supply to provide a dedicated 40A circuit, and potentially adding zone valve controls if not already fitted. If the existing boiler was a combi (no cylinder), a hot water cylinder will need to be added — this is a more significant installation. If the property currently has a separate cylinder (system or regular boiler setup), the changeover is straightforward. The boiler's ¾\" connections match standard UK heating pipework via flexi hoses.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eIs it compatible with underfloor heating?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Strom 7kW is fully compatible with \u003cstrong\u003ewet underfloor heating (UFH) systems\u003c\/strong\u003e. The flow temperature is adjustable down to 20°C, and typical UFH manifold supply temperatures (35–45°C for screed systems, up to 50–55°C for suspended floor systems) are well within the boiler's operating range. For mixed systems combining underfloor heating with panel radiators at different flow temperatures, a thermostatic blending valve or weather compensation control can be added to the UFH circuit. The boiler's modulating output is particularly well-suited to UFH, which responds best to stable, lower-temperature inputs rather than high-temperature on\/off cycling.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954594947421,"sku":"SBSP7S","price":970.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_3c5371ac-7004-4362-9556-e5d1f43aa4ff.png?v=1751972764"},{"product_id":"strom-11kw-electric-system-boiler-single-phase","title":"Strom 11kW Single Phase Electric System Boiler SBSP11S","description":"\u003cdiv style=\"font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:16px;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.65;\"\u003e\n\n  \u003c!-- INTRO --\u003e\n  \u003cp style=\"font-size:17px;margin:0 0 22px;\"\u003e\n    The \u003cstrong\u003eStrom 11kW Single Phase Electric System Boiler\u003c\/strong\u003e is the self-contained electric heating solution built for medium to large homes. Unlike a heat-only boiler, this unit arrives with an \u003cstrong\u003eintegrated pump and expansion vessel already installed\u003c\/strong\u003e — making it faster to fit and easier to commission. Pair it with an indirect hot water cylinder for a complete, flue-free heating system that runs on 100% electrical efficiency with \u003cstrong\u003ezero carbon monoxide at point of use\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- STAT STRIP --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:0 0 28px;\"\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e11kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eHeat Output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e100%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eEfficient\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e55A\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eDraw @ 230VAC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e5 Yr\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eWarranty (registered)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 130px;background:#008377CF;color:#fff;border-radius:8px;padding:18px 14px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;letter-spacing:-0.5px;\"\u003e700mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:4px;opacity:.9;\"\u003eHeight\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CALLOUT: Installer requirement --\u003e\n  \u003cdiv style=\"background:#fff3cd;border-left:4px solid #f59e0b;border-radius:6px;padding:14px 18px;margin:0 0 22px;\"\u003e\n    \u003cstrong style=\"color:#92400e;\"\u003e⚠ Professional Installation Required\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:15px;color:#78350f;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e who is a member of a competent persons scheme. A \u003cstrong\u003ePart P electrical installation certificate\u003c\/strong\u003e is legally required upon completion of any new circuit. Heating pipework must be designed and commissioned by a qualified plumber or heating engineer in accordance with current Building Regulations.\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CALLOUT: System boiler note --\u003e\n  \u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;border-radius:6px;padding:14px 18px;margin:0 0 28px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ System Boiler — Hot Water Cylinder Required\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan style=\"font-size:15px;\"\u003eThis is a \u003cstrong\u003ecentral heating-only\u003c\/strong\u003e boiler. It does not supply domestic hot water directly. An \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e is required for hot water. The pump and expansion vessel are built in, but you will still need to supply: \u003cstrong\u003eisolation valves, automatic bypass valve, zone valves\u003c\/strong\u003e (if required), and \u003cstrong\u003eexternal heating controls\u003c\/strong\u003e (programmer and room thermostat).\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FEATURES SECTION --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 18px;border-radius:6px 6px 0 0;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:0;\"\u003eKEY FEATURES\u003c\/div\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:14px;padding:16px 0 28px;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e⚙ Integrated Pump \u0026amp; Expansion Vessel\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe pump and expansion vessel are \u003cstrong\u003efactory-fitted inside the unit\u003c\/strong\u003e, reducing on-site labour and the number of external components to specify. This makes the Strom System Boiler significantly quicker to install than a heat-only alternative.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📄 Touchscreen Digital Control Panel\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eA clear \u003cstrong\u003etouchscreen display\u003c\/strong\u003e provides at-a-glance system status including flow and return temperatures, pump status, frost protection mode and fault codes — giving engineers and homeowners full visibility without removing any panels.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e♻ Patented Serpentine Heat Exchanger\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eStrom's \u003cstrong\u003epatented heat exchanger design\u003c\/strong\u003e distributes heat evenly across the full element surface, eliminating hot spots that cause limescale and corrosion. Multiple heating strands reduce stress on individual components and significantly extend element life.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🔅 Near-Silent, Zero-Emission Operation\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003eNo flue, no combustion, no carbon monoxide\u003c\/strong\u003e — this boiler can be installed in virtually any room. Minimal moving parts keep noise levels negligible, making it ideal for living spaces, utility rooms and airing cupboards alike.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e☉ Solar PV \u0026amp; Underfloor Heating Compatible\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eDesigned to work with \u003cstrong\u003esolar PV divert controllers\u003c\/strong\u003e, surplus generation from your panels can power your heating — reducing running costs further. The wide flow temperature range (20–80 °C) also makes this boiler fully compatible with \u003cstrong\u003eunderfloor heating systems\u003c\/strong\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e⚡ 100% Electrical Efficiency\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eEvery kilowatt drawn from the supply converts directly to useful heat — \u003cstrong\u003eno flue losses, no standing pilot flame\u003c\/strong\u003e. Pair with a green electricity tariff or Economy 10 to maximise savings against oil or LPG alternatives.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e☀ Built-In Frost Protection\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAn onboard frost-protection mode activates automatically to safeguard the boiler and system pipework in cold conditions. For installations in unheated outbuildings, \u003cstrong\u003ean external frost stat wired inline\u003c\/strong\u003e is also recommended.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 250px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🔌 Modular \u0026amp; Serviceable by Design\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003efully modular component layout\u003c\/strong\u003e means individual parts — including the heating element — can be replaced without swapping the whole unit. This keeps long-term service costs low and maximises the working life of the installation.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- SPEC TABLE --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 18px;border-radius:6px 6px 0 0;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:0;\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;margin-bottom:28px;\"\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;width:45%;border-bottom:1px solid #c8e6e3;\"\u003eModel \/ SKU\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStrom SBSP11S\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeat Output\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e11 kW\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePhase \/ Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle Phase — 230 VAC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCurrent Draw @ 230 VAC\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e55 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum MCB \/ RCB Breaker\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e63 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e10 mm²\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Temperature Range\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20 °C – 80 °C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Pressure Range\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.5 – 1.5 Bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Flow \u0026amp; Return Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" Male BSP (flexi hoses or push-fit irons recommended)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePRV Connection Size\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15 mm Compression\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e700 × 425 × 260 mm (including wall bracket)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEAN\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5060797570142\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWarranty\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5 years when registered at www.stromltd.com\/guarantee within 45 days of purchase\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;font-weight:600;\"\u003eWhat's in the Box\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;\"\u003eSystem boiler, wall fixings \u0026amp; mounting guide, installation manual\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 18px;border-radius:6px 6px 0 0;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:0;\"\u003eFREQUENTLY ASKED QUESTIONS\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 8px 8px;margin-bottom:28px;overflow:hidden;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the difference between this System Boiler and the Strom Heat Only Boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        The key difference is what's built into the unit. The \u003cstrong\u003eSystem Boiler includes an integrated circulating pump and expansion vessel\u003c\/strong\u003e, so fewer external components need to be sourced and fitted by your installer. The Heat Only boiler is a stripped-back unit where pump, vessel and pressure relief valve are all supplied and fitted externally — making it smaller and more flexible in certain system designs, but requiring more on-site work.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat electrical supply and cable does this boiler need?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        At 11kW on 230V single phase, the boiler draws \u003cstrong\u003e55 A\u003c\/strong\u003e. Your installer must provide a \u003cstrong\u003eminimum 63 A MCB\/RCB breaker\u003c\/strong\u003e and a \u003cstrong\u003eminimum 10 mm² cable\u003c\/strong\u003e — though final cable sizing must always be calculated against actual installation conditions (route length, ambient temperature, cable grouping). A linked isolator switch with at least 3 mm contact gap per pole is also required. As a new circuit, a \u003cstrong\u003ePart P electrical installation certificate\u003c\/strong\u003e is a legal requirement on completion.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes this boiler provide domestic hot water?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        No. This is a \u003cstrong\u003ecentral heating-only\u003c\/strong\u003e system boiler. For domestic hot water, an \u003cstrong\u003eindirect hot water cylinder\u003c\/strong\u003e must be installed as part of the overall system. The boiler heats the cylinder via a primary coil. If you need combined heating and instantaneous hot water from a single electric unit, consider the Strom Electric Combi Boiler range instead.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eIs this boiler compatible with underfloor heating?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        Yes. The adjustable \u003cstrong\u003eflow temperature range of 20–80 °C\u003c\/strong\u003e means the boiler can be dialled down to the lower temperatures typically required by water underfloor heating systems (usually 35–45 °C). It is also compatible with \u003cstrong\u003esolar PV divert systems\u003c\/strong\u003e, so surplus electricity from solar panels can be directed to heat the system — reducing daytime running costs.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat heating controls do I need?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        Under Part L of the Building Regulations, external time and temperature controls are mandatory. You can use a \u003cstrong\u003eseparate programmer and room thermostat\u003c\/strong\u003e, or an \u003cstrong\u003eall-in-one programmable room thermostat\u003c\/strong\u003e. The boiler's PCB accepts a standard switch-live signal, making it compatible with most third-party smart thermostats as well as Strom's own programmer and thermostat range.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;cursor:pointer;font-weight:600;list-style:none;\"\u003eHow do I register the 5-year warranty?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:14px 18px;font-size:15px;background:#f9fefe;\"\u003e\n        Register online at \u003cstrong\u003ewww.stromltd.com\/guarantee\u003c\/strong\u003e within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e using the details on the registration card supplied with the boiler. Only the legal owner of the building can register. The warranty covers manufacturing defects, parts and labour during the covered period. It does not cover damage caused by poor installation, water ingress from unchecked pipework, or work not organised through Strom.\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954601828701,"sku":"SBSP11S","price":999.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_c6b5b4f7-73d3-4e88-957d-98fa093a6d6d.png?v=1751972650"},{"product_id":"strom-14-4kw-electric-system-boiler-single-phase","title":"Strom 14.4kW Electric System Boiler – Single Phase","description":"\u003ch2\u003eStrom 14.4kW Electric System Boiler – Single Phase\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 14.4kW Electric System Boiler\u003c\/strong\u003e is a powerful, flexible solution for larger homes or properties with higher heating demands. With advanced digital controls, integrated pump and expansion vessel, and compatibility with modern heating controls, it’s a future-ready choice for electric central heating.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating only – for use with an indirect hot water cylinder\u003c\/li\u003e\n\u003cli\u003eTouchscreen digital control panel\u003c\/li\u003e\n\u003cli\u003eIntegrated pump and expansion vessel\u003c\/li\u003e\n\u003cli\u003eSerpentine heating element for efficiency\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for near-silent operation\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer’s warranty (registration required)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e14.4kW System Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060797570159\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e14.4kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e62A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd\u003e10mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Flow Temp\u003c\/th\u003e\n\u003ctd\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Flow Temp\u003c\/th\u003e\n\u003ctd\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Connection\u003c\/th\u003e\n\u003ctd\u003e3\/4\" Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePRV Connection\u003c\/th\u003e\n\u003ctd\u003e1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd\u003e700 x 425 x 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eERP Rating (Heating)\u003c\/th\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954608120157,"sku":"SBSP15S","price":1085.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase.png?v=1751972342"},{"product_id":"strom-18kw-electric-system-boiler-three-phase","title":"Strom 18kW Electric System Boiler – Three Phase","description":"\u003ch2\u003eStrom 18kW Electric System Boiler – Three Phase\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 18kW Electric System Boiler\u003c\/strong\u003e is engineered for large homes or commercial premises needing robust, high-output central heating. With a familiar layout for installers, advanced digital controls, and integrated pump and expansion vessel, it’s a powerful, low-maintenance electric heating solution.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating only – for use with an indirect hot water cylinder\u003c\/li\u003e\n\u003cli\u003eTouchscreen digital control panel\u003c\/li\u003e\n\u003cli\u003eIntegrated pump and expansion vessel\u003c\/li\u003e\n\u003cli\u003eSerpentine heating element for efficiency\u003c\/li\u003e\n\u003cli\u003eThree-phase power for maximum output\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for near-silent operation\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer’s warranty (registration required)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; height: 313.501px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eModel\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e18kW System Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eEAN\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e5060797570166\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003ePower Supply\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e400V, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eOutput\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e18kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eAmps\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e27A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e3 x 4mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMax Heating Pressure\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMin Heating Pressure\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMax Flow Temp\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eMin Flow Temp\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eHeating Connection\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e3\/4\" Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003ePRV Connection\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e700 x 425 x 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 55.8677%; height: 19.5938px;\"\u003eERP Rating (Heating)\u003c\/th\u003e\n\u003ctd style=\"width: 41.2752%; height: 19.5938px;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954626634077,"sku":"SBTP18S","price":1170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_b30d133a-aad9-4639-b733-3f065a976af1.png?v=1751974183"},{"product_id":"strom-21kw-electric-system-boiler-three-phase","title":"Strom 21kW Electric System Boiler – Three Phase","description":"\u003ch2\u003eStrom 21kW Electric System Boiler – Three Phase\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 21kW Electric System Boiler\u003c\/strong\u003e is the ultimate solution for high-demand heating applications in large homes or commercial buildings. With advanced controls, robust build quality, and compatibility with modern heating controls, it is a future-proof choice for electric central heating.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating only – for use with an indirect hot water cylinder\u003c\/li\u003e\n\u003cli\u003eTouchscreen digital control panel\u003c\/li\u003e\n\u003cli\u003eIntegrated pump and expansion vessel\u003c\/li\u003e\n\u003cli\u003eSerpentine heating element for efficiency\u003c\/li\u003e\n\u003cli\u003eThree-phase power for high output\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for near-silent operation\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer’s warranty (registration required)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e21kW System Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060797570173\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e400V, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e21kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd\u003e3 x 6mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Flow Temp\u003c\/th\u003e\n\u003ctd\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Flow Temp\u003c\/th\u003e\n\u003ctd\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Connection\u003c\/th\u003e\n\u003ctd\u003e3\/4\" Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePRV Connection\u003c\/th\u003e\n\u003ctd\u003e1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd\u003e700 x 425 x 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eERP Rating (Heating)\u003c\/th\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954652324189,"sku":"SBTP21S","price":1249.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_c46192ba-299f-4997-a7e8-2b1ecbe0341e.png?v=1751974101"},{"product_id":"strom-24kw-electric-system-boiler-three-phase","title":"Strom 24kW Electric System Boiler – Three Phase","description":"\u003cp\u003eThe \u003cstrong\u003eStrom 24kW Electric System Boiler\u003c\/strong\u003e (Three Phase) is a powerful, compact, and highly efficient solution for large homes or commercial premises requiring robust central heating. With a familiar layout for installers, advanced touchscreen controls, and integrated pump and expansion vessel, this boiler delivers reliable, emission-free performance and is ideal for properties off the gas grid or where flueing is not possible.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh output: 24kW – suitable for large homes or commercial heating systems\u003c\/li\u003e\n\u003cli\u003eThree-phase power supply for maximum efficiency and performance\u003c\/li\u003e\n\u003cli\u003eTouchscreen digital control panel with LED display\u003c\/li\u003e\n\u003cli\u003eIntegrated pump and expansion vessel for easy installation\u003c\/li\u003e\n\u003cli\u003eSerpentine heating element for rapid, efficient heat transfer\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for near-silent, low-maintenance operation\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eCompatible with vented or unvented indirect cylinders\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003eCompact, wall-mounted design – fits in most plant rooms or cupboards\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer’s warranty (registration required)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e24kW Electric System Boiler (Three Phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060438332062\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eSBTP24S \/ WBTP24S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e400V, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e24kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e36A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Breaker\u003c\/th\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Cable Size\u003c\/th\u003e\n\u003ctd\u003e3 x 6mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Heating Pressure\u003c\/th\u003e\n\u003ctd\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Flow Temp\u003c\/th\u003e\n\u003ctd\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin Flow Temp\u003c\/th\u003e\n\u003ctd\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Connection\u003c\/th\u003e\n\u003ctd\u003e3\/4\" Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePRV Connection\u003c\/th\u003e\n\u003ctd\u003e1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBTU Output\u003c\/th\u003e\n\u003ctd\u003e81,900 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd\u003e610 x 320 x 250 mm (some listings: 630 x 350 x 210 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eApprox. 20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eERP Rating (Heating)\u003c\/th\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSound Pressure Level\u003c\/th\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePerfect for large homes, commercial spaces, or properties with high heating demand\u003c\/li\u003e\n\u003cli\u003eNo flue, no risk of carbon monoxide, and no emissions at point of use\u003c\/li\u003e\n\u003cli\u003eMinimal maintenance and silent operation\u003c\/li\u003e\n\u003cli\u003eEasy to install and compatible with modern heating controls\u003c\/li\u003e\n\u003cli\u003eIdeal for Economy 10 tariffs and renewable energy integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoose the Strom 24kW Electric System Boiler for reliable, high-capacity, and future-proof electric heating.\u003c\/p\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954664710493,"sku":"SBTP24S","price":1430.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromCombiBoilerssinglephase_25a78325-8c0e-4c3f-88f0-a56b5d6169ee.png?v=1751974048"},{"product_id":"strom-2-port-28mm-zone-valve","title":"Strom 2 Port 28mm Zone Valve","description":"\u003cp\u003eThe \u003cstrong\u003eStrom 2 Port 28mm Zone Valve\u003c\/strong\u003e is a robust, high-capacity motorised valve designed for efficient control of water flow in domestic and commercial central heating systems. With a large 28mm bore, it is ideal for larger pipework and systems requiring precise zoning and reliable isolation. The valve features a spring return operation, easy-to-replace actuator head, and is fully interchangeable with leading brands for hassle-free maintenance and upgrades.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 port, 28mm compression connections – suitable for large heating circuits\u003c\/li\u003e\n\u003cli\u003eSpring return operation for automatic closure when de-energised\u003c\/li\u003e\n\u003cli\u003eManual lever for system filling or draining\u003c\/li\u003e\n\u003cli\u003eEasy-to-replace actuator head for simple servicing\u003c\/li\u003e\n\u003cli\u003eInterchangeable with industry-standard zone valves\u003c\/li\u003e\n\u003cli\u003eAuxiliary switch for boiler or pump control\u003c\/li\u003e\n\u003cli\u003eReliable, quiet performance\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\u003eSSZV2822\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Size\u003c\/th\u003e\n\u003ctd\u003e28mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Ports\u003c\/th\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e230V AC, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Current Rating\u003c\/th\u003e\n\u003ctd\u003e6 (2) A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Consumption\u003c\/th\u003e\n\u003ctd\u003e6W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Operating Temperature\u003c\/th\u003e\n\u003ctd\u003e88°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin. Operating Temperature\u003c\/th\u003e\n\u003ctd\u003e5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. Static Pressure\u003c\/th\u003e\n\u003ctd\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManual Override\u003c\/th\u003e\n\u003ctd\u003eYes (lever)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActuator Head\u003c\/th\u003e\n\u003ctd\u003eReplaceable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAuxiliary Switch\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060797570357\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e1 year (subject to manufacturer’s T\u0026amp;Cs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating zone control\u003c\/li\u003e\n\u003cli\u003eHot water cylinder isolation\u003c\/li\u003e\n\u003cli\u003eUnderfloor heating manifolds\u003c\/li\u003e\n\u003cli\u003eLarge domestic or light commercial systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoose the Strom 2 Port 28mm Zone Valve for reliable, efficient, and easily serviceable control of your heating zones.\u003c\/p\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57954744074589,"sku":"MV228","price":65.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Strom2Port28mmZoneValve.webp?v=1751866610"},{"product_id":"strom-6kw-single-phase-heat-only-e-boiler","title":"Strom 6kW Single Phase Heat Only E-Boiler","description":"\u003cp\u003eThe \u003cstrong\u003eStrom 6kW Electric Heat Only Boiler\u003c\/strong\u003e is a compact and efficient electric boiler, perfect for small homes, flats, or extensions requiring central heating only. With no flue, near-silent operation, and minimal maintenance, it’s ideal for properties off the gas grid or where space is at a premium.\u003c\/p\u003e\n\u003ch3\u003eElectric Heat Only Boiler Key Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentral heating only – pair with an indirect hot water cylinder\u003c\/li\u003e\n\u003cli\u003eUltra-compact wall-mounted design\u003c\/li\u003e\n\u003cli\u003eMinimal moving parts for silent, reliable operation\u003c\/li\u003e\n\u003cli\u003eNo flue required – zero emissions at point of use\u003c\/li\u003e\n\u003cli\u003eLED digital display and simple controls\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and underfloor heating\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer’s warranty (extendable to 24 months with registration)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eSBSP6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeat Output\u003c\/th\u003e\n\u003ctd\u003e6kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e230V, Single Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003ctd\u003e26A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin. Breaker Size\u003c\/th\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin. Cable Size\u003c\/th\u003e\n\u003ctd\u003e2.5mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eERP Rating\u003c\/th\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Temp Range\u003c\/th\u003e\n\u003ctd\u003e20–80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Pressure Range\u003c\/th\u003e\n\u003ctd\u003e0.5–1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating Connection\u003c\/th\u003e\n\u003ctd\u003e3\/4\" Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePRV Connection\u003c\/th\u003e\n\u003ctd\u003e15mm Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H x W x D)\u003c\/th\u003e\n\u003ctd\u003e520 x 235 x 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN\u003c\/th\u003e\n\u003ctd\u003e5060438333540\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975604183389,"sku":"SBSP6H","price":495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler_bc34beb7-2f81-4641-a1ff-12bf3af79a7d.png?v=1751979167"},{"product_id":"strom-9kw-single-phase-heat-only-e-boiler","title":"Strom 9kW Single Phase Heat Only Electric Boiler","description":"\u003cdiv style=\"font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-size: 16px; color: #1a1a1a; max-width: 900px; margin: 0 auto; line-height: 1.65;\"\u003e\n\u003c!-- INTRO --\u003e\n\u003cp style=\"font-size: 17px; margin: 0 0 22px;\"\u003eThe \u003cstrong\u003eStrom 9kW Single Phase Heat Only Electric Boiler\u003c\/strong\u003e delivers reliable central heating without the bulk — a compact, wall-mounted unit purpose-built for properties where \u003cstrong\u003espace is at a premium\u003c\/strong\u003e or where built-in pumps and expansion vessels simply aren't needed. With \u003cstrong\u003ezero carbon monoxide emissions\u003c\/strong\u003e, near-silent operation and a \u003cstrong\u003epatented serpentine heat exchanger\u003c\/strong\u003e, this is the clean, quiet alternative to gas that fits almost anywhere in your home.\u003c\/p\u003e\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 28px;\"\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e100%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eEfficient\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e41A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eDraw @ 230VAC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e2 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eWarranty (registered)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 18px 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold; letter-spacing: -0.5px;\"\u003e520mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: .9;\"\u003eHeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CALLOUT: Installer requirement --\u003e\n\u003cdiv style=\"background: #fff3cd; border-left: 4px solid #f59e0b; border-radius: 6px; padding: 14px 18px; margin: 0 0 22px;\"\u003e\n\u003cstrong style=\"color: #92400e;\"\u003e⚠ Professional Installation Required\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 15px; color: #78350f;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e who is a member of a competent persons scheme. A \u003cstrong\u003ePart P electrical certificate\u003c\/strong\u003e and notification under Building Regulations are legally required. The heating circuits must also be designed and commissioned by a competent plumber or heating engineer.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- CALLOUT: What you also need --\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 18px; margin: 0 0 28px;\"\u003e\n\u003cstrong style=\"color: #005c54;\"\u003eℹ Heat Only Boiler — External Components Needed\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 15px;\"\u003eUnlike a system boiler, the Heat Only variant has no built-in pump, expansion vessel or pressure relief valve. You will need to supply and fit: \u003cstrong\u003ecirculating pump, expansion vessel \u0026amp; kit, pressure gauge, automatic bypass valve, isolation valves,\u003c\/strong\u003e and \u003cstrong\u003eexternal heating controls\u003c\/strong\u003e (programmer + room thermostat or programmable thermostat).\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION: FEATURES --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 18px; border-radius: 6px 6px 0 0; font-size: 15px; font-weight: bold; letter-spacing: .5px; margin-bottom: 0;\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; padding: 16px 0 28px;\"\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e♻ Patented Serpentine Heat Exchanger\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eStrom's unique heat exchanger distributes heat \u003cstrong\u003eevenly across the entire element surface\u003c\/strong\u003e, eliminating hot spots that cause limescale and corrosion. The result is a longer-lasting element and consistently efficient heat transfer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e🔅 Near-Silent, Zero-Emission Operation\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eWith \u003cstrong\u003eno combustion, no flue and no carbon monoxide\u003c\/strong\u003e, this boiler can be installed in virtually any room. Minimal moving parts mean whisper-quiet performance day and night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e🔍 Compact Form Factor\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAt just \u003cstrong\u003e520 × 235 × 120 mm\u003c\/strong\u003e, the unit is considerably smaller than a conventional boiler. Wall-mounted via an integrated bracket with supplied expanding bolts, it fits neatly in cupboards, utility rooms or airing cupboards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e⚡ 100% Electrical Efficiency\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eEvery kilowatt drawn from the supply converts directly to heat — \u003cstrong\u003eno flue losses, no standby pilot flame\u003c\/strong\u003e. Pair with a green electricity tariff or your own solar panels to reduce running costs further.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e☀ Frost Protection Built-In\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAn onboard frost-protection mode activates automatically to \u003cstrong\u003esafeguard the boiler and pipework\u003c\/strong\u003e in unheated spaces. For external outbuildings, Strom recommends adding an external frost stat wired inline.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e🔌 Modular \u0026amp; Serviceable Design\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003efully modular component layout\u003c\/strong\u003e means individual parts can be replaced without swapping the whole unit, keeping long-term maintenance costs low. The heating element is a single replaceable assembly — straightforward for any qualified engineer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e☹ External Thermostat Compatible\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eA dedicated switch-live thermostat terminal on the PCB accepts \u003cstrong\u003eany standard room thermostat or programmable thermostat\u003c\/strong\u003e, giving you full flexibility over how your heating schedule is managed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 250px; background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 6px;\"\u003e☉ Solar-Ready \u0026amp; Off-Grid Ideal\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eCompatible with \u003cstrong\u003esolar PV divert systems\u003c\/strong\u003e (e.g. via an immersion controller), making this boiler an excellent companion to on-site generation. It's also the go-to choice for \u003cstrong\u003eproperties not connected to the gas network\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION: SPECIFICATIONS --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 18px; border-radius: 6px 6px 0 0; font-size: 15px; font-weight: bold; letter-spacing: .5px; margin-bottom: 0;\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; width: 45%; border-bottom: 1px solid #c8e6e3;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003ePhase\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eSingle Phase (230 VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eCurrent Draw @ 230 VAC\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e41 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMinimum MCB \/ RCB Breaker\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e45 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e6 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e20 °C – 80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e0.5 – 1.5 Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eHeating Flow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e¾\" Male BSP (flexi hoses or push-fit irons recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003ePRV Connection Size\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e15 mm Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003e2 years when registered within 45 days of purchase (1 year if unregistered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eCompliance\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border-bottom: 1px solid #c8e6e3;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS7671 (IEE 19th Ed), BS EN 7593, Part L 2022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; font-weight: 600;\"\u003eWhat's in the Box\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px;\"\u003eHeat Only Boiler, integrated wall mounting bracket, 3× expanding wall bolts, wall mounting guide, installation manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- SECTION: FAQ --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 18px; border-radius: 6px 6px 0 0; font-size: 15px; font-weight: bold; letter-spacing: .5px; margin-bottom: 0;\"\u003eFREQUENTLY ASKED QUESTIONS\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #c8e6e3; border-top: none; border-radius: 0 0 8px 8px; margin-bottom: 28px; overflow: hidden;\"\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat is a Heat Only boiler and how does it differ from a System boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eA \u003cstrong\u003eHeat Only boiler\u003c\/strong\u003e (also called an Open Vent or Regular boiler) provides only the heat source — it has no built-in circulating pump, expansion vessel, pressure gauge or pressure relief valve. Those components are fitted externally by your installer. This makes the unit physically smaller and is ideal for \u003cstrong\u003esituations where you already have a pump and vessel arrangement\u003c\/strong\u003e, or where you need more flexibility in system design. A System boiler packages those components internally for a more self-contained installation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat electrical supply and cable size do I need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eThe 9kW model draws \u003cstrong\u003e41 A at 230 VAC\u003c\/strong\u003e. Your installer must provide a \u003cstrong\u003eminimum 45 A MCB\/RCB breaker\u003c\/strong\u003e and a \u003cstrong\u003eminimum 6 mm² cable\u003c\/strong\u003e — though the actual cable specification should always be calculated against the specific installation conditions (cable length, route, ambient temperature). A linked isolator switch with a minimum 3 mm contact gap in every pole is also required. Because this is a new circuit, a \u003cstrong\u003ePart P electrical installation certificate\u003c\/strong\u003e is legally required on completion.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eDoes this boiler work with solar panels?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eYes. The Strom Heat Only Boiler is \u003cstrong\u003ecompatible with solar PV divert systems\u003c\/strong\u003e. When paired with a solar immersion\/divert controller, surplus generation from your panels can be directed to heat your home, reducing your electricity bill. It is also well suited to \u003cstrong\u003eEconomy 7 \/ Economy 10 tariffs\u003c\/strong\u003e for lower overnight running costs.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhich thermostat or controls do I need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eThe boiler has \u003cstrong\u003eno onboard programmer\u003c\/strong\u003e — external time and temperature controls are required by Building Regulations (Part L). You can use a \u003cstrong\u003eseparate programmer and room thermostat\u003c\/strong\u003e, or an all-in-one \u003cstrong\u003eprogrammable room thermostat\u003c\/strong\u003e. The boiler's PCB accepts a standard switch-live signal, making it compatible with most third-party controls including smart thermostats. Strom also manufactures its own range of programmers and thermostats.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eHow do I register the warranty?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eRegister online at \u003cstrong\u003ewww.stromltd.com\/guarantee\u003c\/strong\u003e within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e using the details on the registration card supplied with the boiler. Registration extends the warranty to \u003cstrong\u003e2 years\u003c\/strong\u003e (parts and labour in year 1, parts only in year 2). Only the legal owner of the building can register. Failing to register within the 45-day window reduces cover to \u003cstrong\u003e1 year\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eCan I install this boiler in a bathroom, cupboard or garage?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 15px; background: #f9fefe;\"\u003eThe boiler can be \u003cstrong\u003esited almost anywhere\u003c\/strong\u003e provided the wall surface is non-combustible and rated above 100 °C, there is at least \u003cstrong\u003e100 mm clearance\u003c\/strong\u003e on all sides, and the location is not accessible to unauthorised persons. Where there is risk of access by children or unqualified individuals, it must be installed in a \u003cstrong\u003elockable enclosure\u003c\/strong\u003e. In areas prone to frost, ensure that an external frost stat is wired inline to supplement the built-in frost-protection mode.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975610245469,"sku":"SBSP9H","price":570.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler_5c1e53a3-deef-4405-8576-75566fb8a832.png?v=1751979087"},{"product_id":"strom-11kw-single-phase-heat-only-e-boiler","title":"Strom 11kW Single Phase Heat Only Electric Boiler — SBSP11H — Wall-Mounted No Flue No Gas","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eStrom 11kW Single Phase Heat Only Electric Boiler (SBSP11H)\u003c\/strong\u003e is a \u003cstrong\u003ecompact, wall-mounted electric boiler\u003c\/strong\u003e designed to provide central heating via an existing radiator circuit — with \u003cstrong\u003eno flue, no gas connection, and no risk of carbon monoxide\u003c\/strong\u003e. It is the most stripped-back form of electric boiler: no integrated pump, no integral expansion vessel, no hot water function — just the essential heating element and controls in a unit measuring \u003cstrong\u003ejust 520 × 235 × 120 mm\u003c\/strong\u003e. This makes it ideal for installations where space is at a premium, where an existing pump and expansion vessel are already in place, or where a system boiler format is not required. The Strom self-modulating heat exchanger supports \u003cstrong\u003eoutput from as low as 1 kW\u003c\/strong\u003e, reducing energy consumption during lower demand periods, and the multi-strand element design eliminates hot spots to minimise limescale build-up and extend service life.\n  \u003c\/p\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e11 kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eHeating output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003efrom 1 kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eModulation range\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e520×235mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eUltra-compact (120mm deep)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e~100%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEfficiency\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:100px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003eNo flue\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eNo gas — install anywhere\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Installer Requirements\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003ePart P registered electrician\u003c\/strong\u003e. Requires a dedicated \u003cstrong\u003e230V single-phase circuit with a minimum 50A breaker and ≥10mm² cable\u003c\/strong\u003e (48A full load). Warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e at stromltd.com. A Part P certificate is required; annual service is recommended but the boiler has no gas-related service obligation.\n  \u003c\/div\u003e\n\n  \u003c!-- ── AMBER HEAT-ONLY CALLOUT ────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ Heat Only — What's Not Included\u003c\/strong\u003e\u003cbr\u003e\n    As a \u003cstrong\u003eheat-only boiler\u003c\/strong\u003e, the SBSP11H provides central heating only — it has \u003cstrong\u003eno domestic hot water function, no integrated circulating pump, and no integral expansion vessel\u003c\/strong\u003e. These must be supplied separately or already exist in the installation. This is the correct boiler type when replacing a heat-only gas boiler in an existing sealed or open-vented system, or where the pump and vessel are located remotely. If you require integrated pump, vessel, and optional DHW, see the \u003cstrong\u003eStrom System Boiler\u003c\/strong\u003e or \u003cstrong\u003eStrom Combi Boiler\u003c\/strong\u003e range instead.\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Features \u0026amp; Benefits\n  \u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Flue — Install Almost Anywhere\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWith no combustion and no exhaust gases, the SBSP11H requires \u003cstrong\u003eno flue penetration through an external wall or roof\u003c\/strong\u003e. It can be installed in any room or cupboard with sufficient wall space and electrical supply — including kitchens, utility rooms, airing cupboards, garages, and roof spaces. There is no planning constraint on flue positioning, no condensate drain, and no annual Gas Safe inspection requirement.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Ultra-Compact — 120mm Deep\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAt \u003cstrong\u003e520 × 235 × 120mm\u003c\/strong\u003e, the SBSP11H is one of the slimmest electric boilers available. The shallow 120mm depth means it fits on walls and in spaces where a conventional boiler would not — it protrudes less from the wall than most combination boilers by a substantial margin, and can be installed inside a slim airing cupboard or recessed into partition boarding.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Self-Modulating — Down to 1 kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Strom heat exchanger uses \u003cstrong\u003emultiple independently controlled heating strands\u003c\/strong\u003e rather than a single element. This allows the boiler to modulate its output from \u003cstrong\u003eas low as 1 kW up to its full 11 kW\u003c\/strong\u003e, matching heat generation precisely to demand. During mild weather or low-load periods, running at 2–3 kW instead of full power significantly reduces energy consumption — an advantage over electric boilers that only switch fully on or off.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Strom Heat Exchanger — Less Limescale\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eHeat is transferred \u003cstrong\u003eacross the whole surface area\u003c\/strong\u003e of the element with water kept separate from the heating strands. This eliminates the hot spots that cause localised limescale formation in conventional immersion-style elements — the primary cause of performance degradation and early element failure in hard water areas. The water-separation design also reduces corrosion of the heating strands, extending service life.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Near Silent — Minimal Moving Parts\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWithout a burner, fan, or combustion process, the SBSP11H operates in near silence. The only moving part in the boiler itself is a basic flow switch or similar; there is no pump or diverter valve within the unit. This makes it suitable for installation in bedrooms, home offices, and living areas adjacent to the boiler location without any noise nuisance.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Zero CO Risk — No Gas Safety Obligation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThere is \u003cstrong\u003eno combustion\u003c\/strong\u003e, so the SBSP11H produces no carbon monoxide and no combustion byproducts of any kind. No CO detector is required by the boiler installation regulations (though always prudent in a property), and there is no Gas Safe registration requirement for the boiler itself. Landlords and building managers benefit from the elimination of one annual safety obligation.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Compatible with Solar PV \u0026amp; Off-Peak Tariffs\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAn electric boiler is the most straightforward heating appliance to integrate with \u003cstrong\u003esolar PV self-consumption and time-of-use electricity tariffs\u003c\/strong\u003e (Octopus Go, Economy 7, Agile). The SBSP11H can be controlled by any standard wired room thermostat or programmer — scheduling heating to run during cheap-rate or self-generated electricity hours is straightforward via the external controls.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Drop-In Replacement for Heat-Only Gas Boiler\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe SBSP11H uses \u003cstrong\u003e¾\" male BSP heating connections\u003c\/strong\u003e — the same connection size as most conventional gas boilers. It can replace a heat-only gas boiler in an existing system with minimal pipework modification, using the existing radiators, pump, and expansion vessel. No system redesign is required in the majority of cases — the main work is the electrical supply upgrade and connection.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Technical Specifications\n  \u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:42%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStrom Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eModel \/ Part No.\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eSBSP11H\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHeat only (no pump, no expansion vessel, no DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e11 kW\u003c\/strong\u003e (modulates down to 1 kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePhase\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSingle phase — 230V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFull Load Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e48 A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e50 A MCB\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin Heating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHeating Connections\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e¾\" Male BSP (flow and return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15mm Compression (½\" Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e~100% (resistive electric — all input converted to heat)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eErP Heating Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eD (standard rating for electric boilers under EU\/UK ERP scheme)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e520 × 235 × 120 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegrated Pump\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo — external pump required\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIntegrated Expansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo — external expansion vessel required\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDomestic Hot Water\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo — heating circuit only\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003eUp to 5 years — \u003cstrong\u003emust register within 45 days\u003c\/strong\u003e at stromltd.com; defaults to 1 year without registration\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Frequently Asked Questions\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat is a heat-only boiler and when is it the right choice?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eA heat-only boiler (also called a regular or heat-only boiler) provides \u003cstrong\u003eheating output only\u003c\/strong\u003e — it heats the water that circulates through the radiators, but does not heat domestic hot water and does not include a built-in pump or expansion vessel. It is the right choice when: (1) you are replacing an existing heat-only boiler and the pump and expansion vessel are already in situ; (2) space is extremely tight and the smallest possible boiler footprint is required; or (3) the pump needs to be located separately for noise or installation reasons. If you need integrated hot water and you do not have a separate hot water cylinder, a combi or system boiler is more appropriate.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat pump and expansion vessel do I need alongside this boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eAny standard central heating circulating pump compatible with your pipework size and system head loss can be used — typically a Grundfos UPS or similar 15–60 unit for a domestic radiator system. The expansion vessel must be sized for the system volume: for most domestic sealed systems up to 10–12 radiators, an 8–12 litre vessel at the correct pre-charge pressure is typical. Your installer will size both components to your specific system. If you are replacing an existing pump and vessel, they can often be reused provided they are in good condition and correctly rated for the existing system.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat electrical supply upgrade is typically required?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eAt 48A full load on a single phase 230V supply, the SBSP11H requires a \u003cstrong\u003ededicated circuit from the consumer unit\u003c\/strong\u003e with a minimum 50A MCB and minimum 10mm² cable. Many UK domestic properties currently served by gas boilers have a 100A single-phase supply available — but the incoming capacity and available consumer unit space must be confirmed before ordering. Your installing electrician will assess the incoming supply rating and consumer unit before proceeding. Properties with a 60A or 80A supply head may need a supply upgrade from the DNO — this should be investigated early in the project.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eHow does the 11kW single-phase compare to the 14.4kW single-phase model?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe 14.4kW model (SBSP15H) delivers more heating output and is suited to larger or less well-insulated properties, but draws 62A at full load — requiring a 63A MCB and 10mm² cable, and placing a higher demand on the incoming single-phase supply. The \u003cstrong\u003e11kW model at 48A\u003c\/strong\u003e is more manageable within typical UK domestic supply constraints. As a guide, 11kW of heating is typically appropriate for a well-insulated 3–4 bedroom property or a smaller property with higher heat loss. If in doubt, a heat loss calculation (BS EN 12831) performed by your installer will confirm the correct output for your property.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975623713117,"sku":"SBSP11H","price":595.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler_515bca4a-3aa4-4ec5-99d6-bf672b846722.png?v=1751979054"},{"product_id":"strom-14-4kw-single-phase-heat-only-e-boiler","title":"Strom 14.4kW Single Phase Heat Only Electric Boiler SBSP15H 230V 62A","description":"\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: transparent; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 14.4 kW Single Phase Heat Only Electric Boiler\u003c\/strong\u003e (SBSP15H) is the \u003cstrong\u003ehighest-output model in the Strom single-phase heat-only range\u003c\/strong\u003e, designed to serve larger homes or properties where a separate indirect hot water cylinder already handles domestic hot water. At just \u003cstrong\u003e520 × 235 × 120 mm\u003c\/strong\u003e and drawing \u003cstrong\u003e62 A from a standard 230 V single-phase supply\u003c\/strong\u003e, it delivers \u003cstrong\u003e14.4 kW of continuous central heating output\u003c\/strong\u003e from a unit smaller than most gas boilers. The heat-only format means there is \u003cstrong\u003eno integrated pump or expansion vessel\u003c\/strong\u003e — these are fitted externally, giving the installer complete control over component selection and positioning. \u003cstrong\u003eNo flue is required\u003c\/strong\u003e, zero CO or CO₂ emissions at point of use, and with almost no moving parts the boiler runs near-silently throughout its service life. Compatible with \u003cstrong\u003esolar PV diversion, underfloor heating and all standard S-plan and Y-plan central heating systems\u003c\/strong\u003e. LED digital display. \u003cstrong\u003e2-year manufacturer’s warranty with registration within 45 days\u003c\/strong\u003e (1 year without).\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(110px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e14.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eHeat output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e230V 1 ph\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eSingle phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e62A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eCurrent draw\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003eNo flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eZero CO emissions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e20– 80°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eFlow temp range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .85; margin-top: 5px;\"\u003eWarranty (registered)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fef2f2; border-left: 4px solid #dc2626; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #7f1d1d;\"\u003e\n\u003cstrong\u003e⚠ Professional installation required:\u003c\/strong\u003e This boiler draws \u003cstrong\u003e62 A at 230 V\u003c\/strong\u003e and must be connected to the mains by a \u003cstrong\u003ecompetent electrician certified to BS 7671 (18th Edition)\u003c\/strong\u003e. Plumbing installation must be completed by a \u003cstrong\u003equalified and certified heating engineer\u003c\/strong\u003e. Strom Limited accepts no liability for installations carried out by unqualified persons.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #d97706; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #92400e;\"\u003e\n\u003cstrong\u003eℹ Register within 45 days for the full 2-year warranty:\u003c\/strong\u003e The standard out-of-box warranty is \u003cstrong\u003e1 year\u003c\/strong\u003e. Register at \u003cstrong\u003estromltd.com\/guarantee\u003c\/strong\u003e within 45 days of purchase using the registration card supplied in the box to extend this to \u003cstrong\u003e2 years\u003c\/strong\u003e. Only the legal owner of the building can register and make a warranty claim. Keep your merchant invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #005c54;\"\u003e\n\u003cstrong\u003eℹ External components required — not included:\u003c\/strong\u003e The heat-only boiler does not include a \u003cstrong\u003epump, expansion vessel or filling loop\u003c\/strong\u003e. These must be installed externally by a qualified engineer. An \u003cstrong\u003eexternal bypass valve\u003c\/strong\u003e must also be fitted to allow system circulation when all TRVs are closed. Flexi hoses are strongly recommended on the flow and return connections.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eWhat’s in the Box\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom SBSP15H Boiler Unit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003e14.4 kW wall-mounted heat-only electric boiler. Built-in auto air vent, LED digital display and 15 mm compression PRV connection. Upright installation only.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eWall Fixings and Mounting Guide\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eAll fixings for wall installation. Wall must support the boiler’s weight when filled. Boiler must be mounted vertically — other orientations void the warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eInstallation Manual\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eStrom installation and operating instructions: system design, electrical connection, commissioning and maintenance requirements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eWarranty Registration Card\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eRegister at stromltd.com\/guarantee within 45 days of purchase to activate the 2-year warranty. Keep your invoice as proof of purchase.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eHeat Only vs System Boiler — Which Do You Need?\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #008377; color: #fff;\"\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; font-size: 13px; font-weight: bold;\"\u003e\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; font-size: 13px; font-weight: bold;\"\u003eHeat Only (this boiler)\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; font-size: 13px; font-weight: bold;\"\u003eSystem Boiler\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated pump\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✘ External (installer’s choice)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Built-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated expansion vessel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✘ External (installer’s choice)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Built-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eDomestic hot water\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✘ Indirect cylinder required\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✘ Indirect cylinder required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003ePhysical size\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eSmallest (520 × 235 × 120mm)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eLarger (includes pump and vessel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eBest for\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eExisting systems with external components; tight spaces; maximum flexibility\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003eNew installations wanting all-in-one unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; font-weight: bold; color: #005c54; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003eBypass valve required\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #222; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Yes (external)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 13px; color: #666; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✓ Yes (external)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 13px; color: #666; margin: -12px 0 20px;\"\u003eBoth types require an indirect hot water cylinder for domestic hot water. Choose the heat-only format when an external pump and vessel are already in place, when space is extremely tight, or when the installer needs to specify their own pump grade.\u003c\/p\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eExternal Components Required — Not Included\u003c\/div\u003e\n\u003cp style=\"font-size: 15px; color: #444; margin: 0 0 14px;\"\u003eThe heat-only format contains only the heating element, controls and safety devices. Your heating engineer will need to supply and fit the following:\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eCirculator Pump (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eCirculates heated water around the system. Use a high-efficiency variable-speed pump. Full bore isolation valves only on flow and return — standard ball valves restrict flow and reduce performance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eExpansion Vessel (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eAccommodates thermal expansion of heating water. Size to suit total system volume. Must be pre-charged to match system fill pressure before commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eBypass Valve (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eAllows system water to circulate when all TRVs are fully closed. Prevents the boiler from overheating under low-demand conditions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eFilling Loop (required)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eFor pressurising the system to 1.0 – 1.5 bar at commissioning. Must be removed after filling per Water Supply (Water Fittings) Regulations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eFull Bore Isolation Valves (strongly recommended)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eFit on flow and return to isolate the boiler for maintenance without draining the whole system. Standard ball valves create flow restrictions; full bore valves do not.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eFlexi Hoses (strongly recommended)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eStrom recommends flexi hoses on the 3\/4\" flow and return connections. Overtightening rigid compression fittings can damage boiler internals — this is explicitly excluded from warranty cover.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003e14.4 kW — Maximum Single-Phase Heat-Only Output\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThis is the \u003cstrong\u003ehighest output available from a 230 V single-phase heat-only electric boiler\u003c\/strong\u003e. A typical UK three-bedroom semi-detached has a design heat load of 6 – 9 kW; larger or poorly insulated properties can reach 12 – 14 kW. At 14.4 kW this boiler covers the full single-phase residential range. Properties needing more than 14.4 kW would require a three-phase supply.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e14.4 kW\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e230V single phase\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e62A \/ min 63A breaker\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSmallest Possible Unit — 520 × 235 × 120 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eStripping out the pump and vessel leaves a unit roughly the size of a large hardback book. The \u003cstrong\u003e120 mm depth\u003c\/strong\u003e is less than many kitchen cupboard shelves. The SBSP15H fits inside a kitchen cabinet, on an airing cupboard wall, in a utility room corner, in a garage, or in any plant room with minimal clear wall space. It must be mounted \u003cstrong\u003eupright on a vertical wall\u003c\/strong\u003e — any other orientation invalidates the warranty.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e520 × 235 × 120mm\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eUpright wall mount only\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Emissions at Point of Use\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eWith no burner, no combustion and no exhaust gas, \u003cstrong\u003eno flue is required and there is zero risk of carbon monoxide\u003c\/strong\u003e. This eliminates the structural and regulatory complexity of gas or oil installation and makes the boiler suitable for any indoor location without ventilation requirements. Ideal for \u003cstrong\u003eoff-gas-grid properties\u003c\/strong\u003e, flats where fluing is impractical, and heritage or listed buildings where external penetrations are restricted.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO risk\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-gas-grid compatible\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eLED Digital Display — External Thermostat Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003eLED digital display\u003c\/strong\u003e shows flow temperature and system status. Temperature is adjustable across the full 20 – 80°C range. An external room thermostat or time clock can be wired in for zone control and scheduling — compatible with standard \u003cstrong\u003eS-plan, Y-plan and wiring centre configurations\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLED display\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExternal thermostat compatible\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar PV Diversion and Underfloor Heating Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eWorks with \u003cstrong\u003esolar PV diversion devices\u003c\/strong\u003e (myenergi Eddi, iBoost, etc.) to use surplus solar generation for space heating instead of exporting at low SEG rates. The 20 – 80°C flow temperature range also makes it compatible with \u003cstrong\u003ewet underfloor heating systems\u003c\/strong\u003e, which typically operate at 35 – 55°C (use manifold mixing valves to maintain correct UFH temperatures).\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV diversion\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eUnderfloor heating\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNear-Silent Operation — Minimal Moving Parts\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eNo burner, no fan, no heat exchanger, no internal pump. The heating element operates in complete silence. The only sound in the system comes from the \u003cstrong\u003eexternal pump\u003c\/strong\u003e, which the installer can position to minimise noise transmission. Minimal moving parts means fewer wear components, lower servicing requirements and high long-term reliability.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo burner or fan\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNear-silent\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLow servicing requirement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eBuilt-in Auto Air Vent and PRV Connection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAn \u003cstrong\u003eautomatic air vent\u003c\/strong\u003e is built into the boiler. If used with an indirect cylinder, an additional auto air vent should be fitted near the cylinder coil. The \u003cstrong\u003e15 mm compression PRV connection\u003c\/strong\u003e accepts the pressure relief valve, which must be piped to a safe discharge point. A system drain point should be fitted at the lowest point of the circuit to allow draining without discharging through the PRV.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBuilt-in auto air vent\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e15mm compression PRV connection\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 28px; height: 28px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"13\" width=\"13\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eAll Standard Heating Configurations Supported\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eCompatible with \u003cstrong\u003eS-plan, Y-plan, fully pumped and gravity-assisted\u003c\/strong\u003e systems. Supplies a heating circuit and can feed an indirect hot water cylinder via a motorised valve or cylinder thermostat. System design to BS EN 12828 \/ 12831. Water treatment to BS EN 7593 with a proprietary inhibitor to protect the heating element and pipework.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eS-plan and Y-plan\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSealed system\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eIndirect cylinder\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eInstallation Quick Reference\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 10px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003e230 V single phase. 62 A draw. Min 63 A circuit breaker. Min 10 mm² cable. Linked isolator with min 3 mm contact gap in every pole. Cable entry at top right panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eElectrical certification\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eConnection by a \u003cstrong\u003ecompetent electrician to BS 7671 (18th Edition)\u003c\/strong\u003e. System must be earthed before any current is applied.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003ePlumbing certification\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eBy a \u003cstrong\u003equalified and certified heating engineer\u003c\/strong\u003e. Design to BS EN 12828, 12831 and 14336. Water treatment to BS EN 7593.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSystem pressure\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eFill to 1.0 – 1.5 bar. Fill slowly, vent all manual release valves to purge air. Remove filling loop after commissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0f9f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003ePipework connections\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003e3\/4\" male (22 mm pipe). Full bore isolation valves on flow and return. Flexi hoses strongly recommended. Do not overtighten rigid fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f8f8f8; border-radius: 8px; padding: 14px 16px; border-left: 4px solid #008377;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eMounting and location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444; line-height: 1.5;\"\u003eUpright on vertical wall only — other orientations void warranty. Wall must support boiler weight when filled. Allow access for front panel removal. Avoid frost-risk locations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP15H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat output\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e14.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP rating (heating)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow temperature range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20 – 80°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating pressure range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eElectrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230 V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent draw\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e62 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum circuit breaker\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum cable size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eConnections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow and return\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3\/4\" Male (22 mm pipe)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15 mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003ePhysical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eWall-mounted, upright only (warranty void otherwise)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eFeatures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eLED digital display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBuilt-in auto air vent\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated pump\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNo — external pump required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eIntegrated expansion vessel\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNo — external expansion vessel required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue required\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eEmissions at point of use\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eZero (no combustion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCompatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating systems\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eS-plan, Y-plan, sealed system, fully pumped\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDomestic hot water\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eVia indirect cylinder (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV diversion\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eUnderfloor heating\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eStandards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating design\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eElectrical\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBS 7671 (18th Edition IEE Wiring Regulations)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWater treatment\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBS EN 7593\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eWarranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eStandard warranty\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1 year (without registration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExtended warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (register within 45 days at stromltd.com\/guarantee)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWarranty holder\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eLegal owner of building only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBox Contents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eIncluded\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler unit, wall fixings, mounting guide, installation manual, registration card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eEAN barcode\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5060438333571\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is the difference between a heat-only and a system electric boiler?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003eheat-only boiler\u003c\/strong\u003e contains only the heating element, controls and safety components. There is no pump or expansion vessel. These are installed externally by the engineer, who chooses their specification and positioning. A \u003cstrong\u003esystem boiler\u003c\/strong\u003e includes both components in a larger housing. The heat-only format is the better choice for existing systems that already have an external pump and vessel, for installations where space is extremely tight, or where the engineer wants full control over component selection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat size indirect cylinder does this boiler need?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe cylinder size depends on the property’s daily hot water demand, not the boiler output. General UK guidance: 1 – 2 people = 120 – 150 litres; 3 – 4 people = 150 – 210 litres; 5+ people = 250 – 300 litres. At 14.4 kW the boiler will heat a 150 litre cylinder from cold to 60°C in approximately 30 minutes. Your heating engineer should complete a full heat loss and cylinder sizing calculation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this boiler work with Economy 7 or Economy 10 tariffs?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The SBSP15H can be controlled via external time clocks or a room thermostat, allowing it to be scheduled to run during off-peak tariff periods. On Economy 7 or Economy 10, the boiler can heat the property and charge the hot water cylinder overnight at reduced electricity rates. Pairing with a solar PV array and diversion device can further reduce daytime grid import by directing surplus solar generation to heating.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhy does Strom recommend flexi hoses rather than rigid fittings?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe 3\/4\" male connections on the boiler require tightening to form a watertight seal. The force applied to rigid compression or push-fit fittings can be transmitted to the boiler’s internal connections, potentially damaging the element housing. Flexi hoses absorb this mechanical stress and accommodate minor misalignment. Strom’s installation manual explicitly states that damage from overtightening rigid fittings is \u003cstrong\u003enot covered under warranty\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhy must I use full bore isolation valves rather than standard ball valves?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eStandard ball valves have a reduced bore that creates a flow restriction when open. Immediately adjacent to the boiler, this limits circulation rates and can cause localised overheating of the heating element. Full bore isolation valves have the same internal diameter as the connected pipework and create no restriction, maintaining correct flow and protecting long-term performance.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eIs this boiler suitable for a property off the gas grid?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes — this is one of the SBSP15H’s primary use cases. Properties that cannot access mains gas, where an LPG installation is impractical, or where fluing is restricted (listed buildings, upper-floor flats) are well served by an electric boiler. The running cost per kWh is higher than gas, but this can be offset by pairing with a solar PV system and\/or battery storage, and by taking advantage of Economy 7 or Economy 10 off-peak tariffs to heat the property and charge hot water storage at lower electricity rates.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(210px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom 14.4kW Single Phase System Boiler\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eSame output with integrated pump and expansion vessel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eIndirect Unvented Hot Water Cylinder\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eRequired for domestic hot water with this heat-only boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eGrundfos UPM3 AUTO 25-70 Circulator Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eHigh-efficiency variable-speed pump for the external circuit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi Eddi Solar PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDiverts surplus solar generation to space heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":57975636590941,"sku":"SBSP15H","price":770.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseHeatOnlyE-Boiler.png?v=1751978952"},{"product_id":"strom-all-in-one-170l-pre-plumbed-cylinder-with-9kw-heat-only-boiler","title":"Strom 9kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder – SBSP9H170PP","description":"\u003c!-- SEO Product Name: Strom 9kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder – SBSP9H170PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 9kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP9H170PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e9kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e170L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e2–3 bedroom property with higher hot water demand\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e9kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e170L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e9kWkW heat-only boiler is mounted directly onto the outside of the 170L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e9kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e41A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e6 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e170L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~166 litres (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~52 kg (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~218 kg (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eapprox. 1.5 kWh\/24h (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~1175 × 580 × 660 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP9H170PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 9kWkW boiler require?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 9kWkW boiler draws \u003cstrong\u003e41AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e50AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e6 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 9kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e9kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e170L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":62735308521821,"sku":"SBSP9H170PP","price":2550.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1.png?v=1768820651"},{"product_id":"strom-all-in-one-170l-pre-plumbed-cylinder-with-11kw-heat-only-boiler","title":"Strom 11kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder – SBSP11H170PP","description":"\u003c!-- SEO Product Name: Strom 11kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder – SBSP11H170PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 11kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP11H170PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e11kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e170L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e3–4 bedroom property with regular family hot water demand\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e11kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e170L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e11kWkW heat-only boiler is mounted directly onto the outside of the 170L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e11kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e48A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e170L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~166 litres (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~52 kg (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~218 kg (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eapprox. 1.5 kWh\/24h (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~1175 × 580 × 660 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP11H170PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 11kWkW boiler require?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 11kWkW boiler draws \u003cstrong\u003e48AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e63AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e10 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 11kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e11kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e170L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":62735356035421,"sku":"SBSP11H170PP","price":2570.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1.png?v=1768820651"},{"product_id":"strom-all-in-one-170l-pre-plumbed-cylinder-with-14kw-heat-only-boiler","title":"Strom 14.4kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder – SBSP15H170PP","description":"\u003c!-- SEO Product Name: Strom 14.4kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder – SBSP15H170PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 14.4kW Electric Heat-Only Boiler with 170L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP15H170PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e14.4kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e170L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e4–5 bedroom property or high-demand household\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e14.4kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e170L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e14.4kWkW heat-only boiler is mounted directly onto the outside of the 170L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e14.4kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e62A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e170L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~166 litres (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~52 kg (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~218 kg (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eapprox. 1.5 kWh\/24h (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~1175 × 580 × 660 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP15H170PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 14.4kWkW boiler require?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 14.4kWkW boiler draws \u003cstrong\u003e62AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e63AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e10 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 14.4kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e14.4kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e170L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":62735389983069,"sku":"SBSP15H170PP","price":2700.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1.png?v=1768820651"},{"product_id":"strom-all-in-one-200l-pre-plumbed-cylinder-with-14kw-heat-only-boiler","title":"Strom 14.4kW Electric Heat-Only Boiler with 200L Pre-Plumbed Indirect Cylinder – SBSP15H200PP","description":"\u003c!-- SEO Product Name: Strom 14.4kW Electric Heat-Only Boiler with 200L Pre-Plumbed Indirect Cylinder – SBSP15H200PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 14.4kW Electric Heat-Only Boiler with 200L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP15H200PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e14.4kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e200L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e5+ bedroom property, high hot water demand or light commercial use\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e14.4kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e200L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e14.4kWkW heat-only boiler is mounted directly onto the outside of the 200L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e14.4kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e62A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e200L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e197 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e56 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e253 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1.7 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~1320 × 580 × 660 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP15H200PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 14.4kWkW boiler require?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 14.4kWkW boiler draws \u003cstrong\u003e62AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e63AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e10 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 14.4kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e14.4kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e200L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":62735413346653,"sku":"SBSP15H200PP","price":2700.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1.png?v=1768820651"},{"product_id":"strom-all-in-one-200l-pre-plumbed-cylinder-with-11kw-heat-only-boiler","title":"Strom 11kW Heat-Only Electric Boiler with 200L Pre-Plumbed Indirect Cylinder – SBSP11H200PP","description":"\u003c!-- SEO Product Name: Strom 11kW Electric Heat-Only Boiler with 200L Pre-Plumbed Indirect Cylinder – SBSP11H200PP --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: #fff; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom 11kW Electric Heat-Only Boiler with 200L Pre-Plumbed Indirect Cylinder\u003c\/strong\u003e (SKU: SBSP11H200PP) is a \u003cstrong\u003ecomplete, factory-assembled one-box heating and hot water system\u003c\/strong\u003e for properties without a mains gas connection. The \u003cstrong\u003e11kW single-phase electric boiler\u003c\/strong\u003e arrives pre-mounted on the outside of the \u003cstrong\u003e200L duplex stainless steel unvented cylinder\u003c\/strong\u003e, with the expansion vessel, circulator pump, pressure gauge, filling loop and safety controls all factory-fitted. On site, only the \u003cstrong\u003eflow, return, cold supply and electrical connections\u003c\/strong\u003e need to be made — no boiler assembly, no pump or vessel mounting, no guesswork. The cylinder uses \u003cstrong\u003eStrom's Prime2o duplex stainless steel\u003c\/strong\u003e construction, with 50mm insulation and a coil rated at 19.94 kW for fast indirect heat-up from the boiler circuit. Backed by a \u003cstrong\u003e25-year manufacturing guarantee on the cylinder\u003c\/strong\u003e and a \u003cstrong\u003e2-year warranty on the boiler\u003c\/strong\u003e (registration within 45 days required). Suitable for: \u003cstrong\u003e4–5 bedroom property with large household hot water demand\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e11kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e200L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e25 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eCyl Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBoiler Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eMax Pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRequired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ G3 \u0026amp; Electrician Required:\u003c\/strong\u003e The cylinder is unvented (pressurised). Installation must be carried out by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e for the cylinder and a \u003cstrong\u003equalified electrician\u003c\/strong\u003e for the boiler wiring. Building Regulations Part G applies.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Boiler Warranty Registration:\u003c\/strong\u003e The 2-year boiler warranty must be \u003cstrong\u003eregistered within 45 days of purchase\u003c\/strong\u003e at stromltd.com. Retain the invoice as proof of purchase.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Box System — Boiler and Cylinder Factory-Mounted Together\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003e11kWkW heat-only boiler is mounted directly onto the outside of the 200L pre-plumbed cylinder\u003c\/strong\u003e before despatch, arriving as a single ready-to-position unit. Expansion vessel, circulator pump, pressure gauge, filling loop and safety controls are all pre-fitted — only the flow, return, cold water and electrical connections need to be made on site.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-assembled\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePre-plumbed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eMinimal site work\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eDuplex Stainless Steel Prime2o Cylinder — 25-Year Manufacturing Guarantee\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is manufactured from \u003cstrong\u003eduplex stainless steel\u003c\/strong\u003e — the same alloy grade used in marine and chemical processing applications for its superior resistance to corrosion and stress cracking. Strom backs it with a \u003cstrong\u003e25-year manufacturing guarantee\u003c\/strong\u003e. 50mm PU foam insulation minimises standby heat loss for efficient round-the-clock performance. Rated to \u003cstrong\u003e10 bar maximum working pressure\u003c\/strong\u003e and \u003cstrong\u003e3 bar fill pressure\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDuplex stainless steel\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e25-yr cylinder guarantee\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e10 bar rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSerpentine Heating Element Technology — Efficient and Reliable\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler uses \u003cstrong\u003eSerpentine heating element\u003c\/strong\u003e technology — a continuous wound element with a larger heat-transfer surface area than dry-core or standard sheathed elements. This means more efficient heat transfer to the system water, lower surface temperature per watt, and extended element life compared with conventional designs.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSerpentine element\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHigh heat transfer\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLong element life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eTouchscreen Control Display — Simple On-Site Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler features a \u003cstrong\u003etouchscreen control panel with backlit display\u003c\/strong\u003e. Flow temperature is adjustable from \u003cstrong\u003e20°C to 80°C\u003c\/strong\u003e in 1°C steps. The display shows current flow temperature, set-point, fault codes and system pressure at a glance. No separate programmer is included — the boiler integrates with standard wiring centres, room thermostats and zone valves.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouchscreen\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e20–80°C range\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFault code display\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo Flue, No Gas, No Carbon Monoxide — Safe for Any Location\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eAs a fully electric system, the Strom boiler requires \u003cstrong\u003eno flue\u003c\/strong\u003e, \u003cstrong\u003eno gas supply\u003c\/strong\u003e and produces \u003cstrong\u003eno carbon monoxide\u003c\/strong\u003e. It can be sited in cupboards, utility rooms or any location where a gas or oil boiler would not be permitted or practical. Ideal for off-grid properties, flats, conversions and commercial premises without a mains gas connection.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo flue needed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo gas supply\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero CO output\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOff-grid ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar Panel Compatible — Reduce Running Costs with PV\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler is \u003cstrong\u003ecompatible with solar PV panels\u003c\/strong\u003e via an appropriate solar diverter (such as Solar iBoost+ or myenergi eddi). Surplus solar generation can be diverted to heat the cylinder immersion, substantially reducing electricity running costs. The pre-plumbed cylinder includes a single immersion heater boss for direct electric top-up.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSolar PV compatible\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eImmersion boss included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eDiverter-ready\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeating Pressure Range: 0.5–1.5 Bar — Standard Sealed System\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe boiler operates within a \u003cstrong\u003e0.5 to 1.5 bar\u003c\/strong\u003e sealed heating circuit pressure range. The pre-fitted expansion vessel accommodates normal system expansion. A pressure relief valve and filling loop are included. System pressure is displayed on the touchscreen — no separate pressure gauge dial to read.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e0.5–1.5 bar working pressure\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePRV + filling loop included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eExpansion vessel pre-fitted\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eQualified Installation Required — G3 Competent Person + Qualified Electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe cylinder is \u003cstrong\u003eunvented (pressurised)\u003c\/strong\u003e and must be installed by a \u003cstrong\u003eG3 Unvented Competent Person\u003c\/strong\u003e in accordance with Building Regulations Part G. The boiler wiring must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to BS 7671. Strom recommend a \u003cstrong\u003ededicated RCD-protected circuit\u003c\/strong\u003e for the boiler. Boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase at stromltd.com.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eG3 competent person\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eQualified electrician\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eRegister within 45 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e11kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V, single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e48A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Breaker Size\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum Cable Size\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow \u0026amp; Return Connection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e¾\" male (flexi hoses or push-fit recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePRV Connection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e15mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e520 × 235 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eTouchscreen with display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003ePre-plumbed indirect unvented (Prime2o)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e200L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e197 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Material\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm PU foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e56 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight Full\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e253 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Loss\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1.7 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e19.94 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Water Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Fill Pressure\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Immersions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Dimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~1320 × 580 × 660 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eERP Rating (Cylinder Only)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCompatibility \u0026amp; Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeating Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eHeat-only (regular boiler) — requires separate system controls (programmer, room stat, zone valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSolar PV Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — via solar diverter to immersion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSKU \/ Part Number\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSBSP11H200PP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years (registration within 45 days at stromltd.com)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCylinder Guarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e25-year manufacturing guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStrom Ltd, UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat electrical supply does the 11kWkW boiler require?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eA \u003cstrong\u003e230V single-phase supply\u003c\/strong\u003e is required. The 11kWkW boiler draws \u003cstrong\u003e48AA\u003c\/strong\u003e at full load. Minimum MCB\/RCB size: \u003cstrong\u003e63AA\u003c\/strong\u003e. Minimum cable size: \u003cstrong\u003e10 mm²\u003c\/strong\u003e. Calculations should always be verified for the specific installation, as local voltage and cable run length affect the correct breaker and cable size. Wiring must be carried out by a qualified electrician to BS 7671.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes this unit need a flue or gas connection?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The Strom 11kWkW is a fully electric boiler — it requires \u003cstrong\u003eno flue, no gas supply and produces no carbon monoxide\u003c\/strong\u003e. It can be installed in any indoor location that meets the electrical supply and physical access requirements, including airing cupboards, utility rooms and plant rooms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWho can install this unit?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unvented cylinder must be installed by a \u003cstrong\u003eG3 Competent Person\u003c\/strong\u003e (registered with a relevant scheme such as CIPHE, APHC or similar). The electrical connection must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. The boiler warranty requires \u003cstrong\u003eregistration within 45 days\u003c\/strong\u003e of purchase.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan it work with solar PV?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The cylinder includes an immersion heater boss, and the boiler is \u003cstrong\u003ecompatible with solar PV diverters\u003c\/strong\u003e such as Solar iBoost+ or myenergi eddi. Surplus solar generation can be diverted to heat the cylinder, reducing electricity running costs substantially on sunny days.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is included in the package?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe unit includes: \u003cstrong\u003e11kWkW single-phase electric heat-only boiler\u003c\/strong\u003e (with built-in expansion vessel, circulator pump, pressure gauge, filling loop, touchscreen controls and safety cut-out), mounted onto a \u003cstrong\u003e200L pre-plumbed duplex stainless steel unvented indirect cylinder\u003c\/strong\u003e (with pre-fitted pipework, immersion heater, T\u0026amp;P relief valve and tundish connection). Flexi hoses, fixings and electrical cable are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Electric Heat-Only Boiler (Boiler Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eBoiler-only option for pairing with existing cylinder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eStrom Prime2o Unvented Cylinder (Cylinder Only)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eStandalone cylinder for pairing with existing boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolar iBoost+ Solar Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDivert surplus PV to heat the cylinder immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003emyenergi eddi PV Diverter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eIntelligent solar diverter compatible with this installation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":62735445229917,"sku":"SBSP11H200PP","price":2450.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Untitleddesign1.png?v=1768820651"},{"product_id":"strom-replacement-3-port-valve-head","title":"Strom Replacement 3 Port Valve Head","description":"\u003cdiv class=\"product-block\"\u003e\n\u003cp\u003eThe Strom replacement actuator head for 3 port mid-position motorised valves \u003cstrong\u003eSSZVA302  \u003c\/strong\u003eused with Strom electric boiler systems. It allows you to renew a failed actuator without draining down or disturbing the existing valve body.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement head only for Strom 3 port mid-position zone valves SSZV2232.\u003c\/li\u003e\n\u003cli\u003eDemountable design so the actuator can be changed in situ without removing the valve body from the pipework.\u003c\/li\u003e\n\u003cli\u003eSpring-return operation with a manual lever for test and override of valve position.\u003c\/li\u003e\n\u003cli\u003eSuitable for fully pumped Y-Plan type systems controlling heating and hot water circuits.\u003c\/li\u003e\n\u003cli\u003eWiring compatible with standard 3 port mid-position controls (live, neutral, earth and switched outputs).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDomestic central heating systems using a single 3 port valve to share boiler output between radiators and hot water cylinder.\u003c\/li\u003e\n\u003cli\u003eReplacement of a worn, noisy or failed 3 port actuator on Strom systems where the valve body is still functioning correctly.\u003c\/li\u003e\n\u003cli\u003eMaintenance and servicing of Strom electric boiler installations requiring quick actuator changeover and minimal downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct code\u003c\/th\u003e\n\u003ctd\u003eSSZVA302\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct type\u003c\/th\u003e\n\u003ctd\u003eReplacement actuator head for 3 port zone valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eValve compatibility\u003c\/th\u003e\n\u003ctd\u003eStrom 3 port mid-position zone valves (e.g. SSZV2232)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem type\u003c\/th\u003e\n\u003ctd\u003eFully pumped, Y-Plan style heating and hot water systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003eMotorised mid-position control of heating and hot water circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstallation\u003c\/th\u003e\n\u003ctd\u003eDemountable head, changeable without draining the system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperation\u003c\/th\u003e\n\u003ctd\u003eSpring-return actuator with manual lever\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWiring\u003c\/th\u003e\n\u003ctd\u003eStandard 3 port mid-position wiring (L, N, E and switch wires)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply voltage\u003c\/th\u003e\n\u003ctd\u003e230 V AC, 50 Hz (typical for domestic motorised valve heads)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower consumption\u003c\/th\u003e\n\u003ctd\u003eApprox. 6 W (typical actuator load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmbient temperature (head)\u003c\/th\u003e\n\u003ctd\u003eUp to 50 °C (typical rating for motorised valve actuators)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlow temperature (valve body)\u003c\/th\u003e\n\u003ctd\u003eTypically up to 88 °C when used with Strom boilers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplications\u003c\/th\u003e\n\u003ctd\u003eDomestic sealed or open-vented central heating systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eNotes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied as actuator head only; valve body is not included.\u003c\/li\u003e\n\u003cli\u003eAlways isolate mains power before replacing the actuator head.\u003c\/li\u003e\n\u003cli\u003eInstall in accordance with Strom boiler and system wiring schematics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":63097547063645,"sku":"SSZVA302","price":49.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromReplacement3PortValveHeadSSZVA302.jpg?v=1768820706"},{"product_id":"strom-18kw-electric-combi-boiler-three-phase","title":"Strom 18kW Electric Combi Boiler Three Phase Instant Hot Water \u0026 Heating SBTP18C","description":"\u003cstyle\u003e\n  .dw-wrap{font-family:inherit;color:inherit;line-height:1.7;font-size:16px}\n  .dw-wrap p,.dw-wrap li,.dw-wrap td,.dw-wrap th{font-size:16px!important;line-height:1.7}\n  .dw-wrap h2{font-size:22px!important;font-weight:700;color:#1a3a5c;border-bottom:3px solid #008377;padding-bottom:6px;margin:2rem 0 1rem;line-height:1.3}\n  .dw-wrap h3{font-size:17px!important;font-weight:700;color:#1a3a5c;margin:1.2rem 0 0.4rem;line-height:1.4}\n  .dw-wrap p{margin:0 0 1rem}\n  .dw-wrap ul{padding-left:1.5rem;margin:0 0 1rem}\n  .dw-wrap ul li{margin-bottom:0.5rem}\n  .dw-badge{display:inline-block;font-size:13px!important;font-weight:700;border-radius:4px;padding:2px 10px;margin-right:5px;margin-bottom:4px;vertical-align:middle}\n  .dw-badge.blue{background:#008377;color:#fff}\n  .dw-badge.navy{background:#1a3a5c;color:#fff}\n  .dw-badge.teal{background:#0d9488;color:#fff}\n  .dw-badge.green{background:#1a7a3c;color:#fff}\n  .dw-badge.grey{background:#555;color:#fff}\n  .dw-intro-box{background:#e0f2fe;border-left:4px solid #008377CF;padding:1.1rem 1.4rem;border-radius:0 6px 6px 0;margin-bottom:1.5rem}\n  .dw-intro-box p{margin:0!important}\n  .dw-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:0.85rem;margin-bottom:1.2rem}\n  .dw-card{background:#e0f2fe;border:1px solid #90caf9;border-radius:6px;padding:1rem 1.1rem;line-height:1.6}\n  .dw-card strong{display:block;color:#1a3a5c;margin-bottom:0.35rem;font-size:16px!important}\n  .dw-info-box{background:#f0fdf4;border:1px solid #86efac;border-radius:6px;padding:1rem 1.2rem;margin:1.2rem 0}\n  .dw-info-box p{margin:0 0 0.5rem!important;color:#065f46;font-weight:700}\n  .dw-comp-box{background:#fff3cd;border:1px solid #ffc107;border-radius:5px;padding:0.9rem 1.1rem;margin:0.8rem 0}\n  .dw-spec-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}\n  .dw-spec-table th{background:#1a3a5c;color:#fff!important;text-align:left;padding:0.7rem 1rem;font-weight:700;font-size:16px!important}\n  .dw-spec-table td{padding:0.6rem 1rem;border-bottom:1px solid #bde0f5;vertical-align:top;font-size:16px!important}\n  .dw-spec-table tr:nth-child(even) td{background:#e0f2fe}\n  .dw-spec-table td:first-child{font-weight:600;color:#111;width:44%}\n  .dw-faq-item{border-bottom:1px solid #bde0f5;padding:0.9rem 0}\n  .dw-faq-item:last-child{border-bottom:none}\n  .dw-faq-item strong{color:#1a3a5c;font-size:16px!important;display:block;margin-bottom:0.3rem}\n  .dw-contents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0.6rem;margin-bottom:1.2rem}\n  .dw-contents-item{background:#f0f9ff;border:1px solid #bde0f5;border-radius:5px;padding:0.6rem 0.9rem;font-size:15px!important}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dw-wrap\"\u003e\n\n  \u003cdiv style=\"margin-bottom:1rem\"\u003e\n    \u003cspan class=\"dw-badge blue\"\u003eSBTP18C\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eStrom\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003e18 kW\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003eElectric Combi\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eThree Phase\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eInstant Hot Water\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eStrom 18kW Electric Combi Boiler – Three Phase (SBTP18C)\u003c\/strong\u003e — High-output electric combi boiler delivering central heating \u0026amp; instant hot water up to 9 l\/min | 18 kW output on 400 V three-phase | Touchscreen controls \u0026amp; LED display | Integrated pump \u0026amp; expansion vessel | No flue, no carbon monoxide risk | Near-silent operation | Solar-compatible \u0026amp; underfloor heating ready | 5-year warranty (registration required) | Ideal for larger homes, multiple bathrooms or high-demand properties\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ Flue-free, emission-free heating \u0026amp; hot water – perfect for larger homes or off-grid properties with three-phase supply\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003eRuns on standard three-phase 400 V supply (32 A breaker per phase, 6 mm² cable recommended). No gas supply or flue needed — zero CO risk. High DHW flow rate suits properties with 2–4 bathrooms or high simultaneous demand. Compatible with solar PV diverters \u0026amp; Economy 10 tariffs for maximum savings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe Strom 18kW Electric Combi Boiler (SBTP18C) is a powerful, all-electric combi unit that provides reliable central heating and instant domestic hot water without the need for a separate cylinder, hot water tank or gas connection. With 18 kW output on three-phase 400 V, it delivers up to 9 litres per minute of hot water at a 30 °C rise — ideal for larger family homes, properties with multiple bathrooms, high-flow showers or demanding simultaneous usage.\u003c\/p\u003e\n\n  \u003cp\u003eFeaturing advanced touchscreen digital controls with LED display, high-efficiency serpentine heating elements, integrated circulation pump and expansion vessel, the boiler operates near-silently (15 dB sound pressure level) thanks to minimal moving parts. No flue or chimney required — completely emission-free and carbon monoxide safe. Fully compatible with solar PV systems (via diverter), underfloor heating, and smart tariffs (Economy 10), it offers a modern, low-maintenance, future-proof heating solution for homes transitioning away from gas or oil, especially those already equipped with three-phase supply.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the Strom 18kW Electric Combi Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstant Hot Water \u0026amp; Heating in One Unit\u003c\/strong\u003e — Combi design eliminates need for hot water cylinder — saves space \u0026amp; installation costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlue-Free \u0026amp; Zero Emissions\u003c\/strong\u003e — No gas, no flue, no CO risk — safe for any property, including new-builds or urban retrofits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNear-Silent Operation\u003c\/strong\u003e — Only 15 dB — quieter than a whisper — ideal for installation near living areas or bedrooms.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchscreen Controls\u003c\/strong\u003e — Intuitive digital interface for precise temperature adjustment, scheduling \u0026amp; status monitoring.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Vessel\u003c\/strong\u003e — All-in-one system — simplifies plumbing \u0026amp; reduces external components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSolar \u0026amp; Economy Tariff Ready\u003c\/strong\u003e — Pair with PV diverter or Economy 10 for significantly reduced running costs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5-Year Warranty\u003c\/strong\u003e — Register online for full coverage — long-term peace of mind.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"dw-grid\"\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003e18 kW Output\u003c\/strong\u003ePowerful three-phase performance — suits larger homes \u0026amp; high DHW demand.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eInstant DHW Flow\u003c\/strong\u003eUp to 9 l\/min at 30 °C rise — fast filling baths \u0026amp; powerful showers.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eTouchscreen \u0026amp; LED Display\u003c\/strong\u003eModern digital controls for precise temperature \u0026amp; timer adjustments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eIntegrated Pump \u0026amp; Expansion Vessel\u003c\/strong\u003eCompact all-in-one design — fewer external parts \u0026amp; easier install.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNo Flue or CO Risk\u003c\/strong\u003eEmission-free electric operation — safe for any property.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eNear-Silent Running\u003c\/strong\u003eOnly 15 dB — suitable for quiet environments.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eSolar PV Compatible\u003c\/strong\u003eUse with diverter to heat water for free using surplus solar.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"dw-spec-table\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMPN \/ SKU\u003c\/td\u003e\n\u003ctd\u003eSBTP18C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5060797570044\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e18 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e400 V AC, Three Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e26 A per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Breaker\u003c\/td\u003e\n\u003ctd\u003e32 A per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended Cable Size\u003c\/td\u003e\n\u003ctd\u003e6 mm² per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeating Pressure Range\u003c\/td\u003e\n\u003ctd\u003e0.5 – 1.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax DHW Pressure\u003c\/td\u003e\n\u003ctd\u003e6.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd\u003e80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDHW Flow Rate @ 30 °C Rise\u003c\/td\u003e\n\u003ctd\u003e9 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003eHeating: 3\/4\" Male, PRV: 1\/2\" Female\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e700 × 425 × 260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd\u003e15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eErP Rating (Heating \/ DHW)\u003c\/td\u003e\n\u003ctd\u003eD \/ A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (registration required)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cdiv class=\"dw-contents-grid\"\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ 1 × Strom 18kW Electric Combi Boiler (SBTP18C)\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Wall fixings \u0026amp; mounting guide\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Installation \u0026amp; user manual\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Installation by qualified electrician\/plumber per BS 7671 \u0026amp; building regulations. Recommended 32 A breaker per phase \u0026amp; 6 mm² cable. Compatible with solar PV diverters, Economy 10 tariffs, underfloor heating \u0026amp; most UK domestic systems. Register online for full 5-year warranty. No flue or gas supply required — zero CO risk.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it need a flue or gas connection?\u003c\/strong\u003e\n    No — 100% electric operation. No flue, no gas supply, no carbon monoxide risk — safe for any property.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat size property is this suitable for?\u003c\/strong\u003e\n    Ideal for larger homes or properties with 2–4 bathrooms and high hot water demand (9 l\/min @ 30 °C rise). For very large properties consider multiple units or higher-output models.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it work with solar panels?\u003c\/strong\u003e\n    Yes — pair with a solar diverter to heat water using surplus PV generation — significantly reduces running costs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow quiet is the boiler?\u003c\/strong\u003e\n    Extremely quiet — only 15 dB sound pressure level — suitable for installation near living areas or bedrooms.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat electrical supply is needed?\u003c\/strong\u003e\n    Three-phase 400 V, 26 A per phase draw. Requires 32 A breaker per phase \u0026amp; minimum 6 mm² cable — consult electrician for load check.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs there a warranty?\u003c\/strong\u003e\n    Yes — 5 years manufacturer warranty (registration required on Strom website). Covers manufacturing defects.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it supply underfloor heating?\u003c\/strong\u003e\n    Yes — fully compatible with underfloor systems (max flow temp 80 °C). Low running costs when paired with Economy tariffs.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWho installs it?\u003c\/strong\u003e\n    Qualified electrician \u0026amp; plumber per BS 7671 \u0026amp; building regulations. Full electrical \u0026amp; plumbing checks required before use.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":63454854971741,"sku":"SBTP18C","price":1370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"},{"product_id":"strom-21kw-three-phase-combi-e-boiler-400v-electric-combi-boiler-touchscreen-no-flue","title":"Strom 21kW Three Phase Combi E-Boiler - 400V Electric Combi Boiler, Touchscreen, No Flue","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 21kW Three Phase Combi E-Boiler\u003c\/strong\u003e is a compact, high-efficiency electric combi boiler designed for properties without a gas supply, delivering instant hot water and central heating with a 21kW output, integrated pump, expansion vessel, and touchscreen controls.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Strom SBTP21C is a modern three-phase electric combi boiler engineered for seamless integration into existing heating systems. It features a serpentine heating element for rapid response, a full-colour touchscreen for intuitive operation, and no requirement for a flue or gas connection. Perfect for off-grid homes, flats, or properties on Economy 10 tariffs, it provides reliable hot water and space heating with near-silent operation and over 99% efficiency. The boiler includes a built-in pump and expansion vessel, making installation straightforward and space-efficient.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21kW output:\u003c\/strong\u003e Sufficient for heating and instant hot water in larger properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-phase 400V supply:\u003c\/strong\u003e Ideal for high-demand applications like multiple baths and showers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen interface:\u003c\/strong\u003e Simple controls and status display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue required:\u003c\/strong\u003e Can be installed almost anywhere, including cupboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated components:\u003c\/strong\u003e Pump and expansion vessel for complete system readiness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Minimal noise for residential comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency:\u003c\/strong\u003e Over 99% with zero CO2 emissions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SBTP21C – Strom 21kW Three Phase Combi E-Boiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat output:\u003c\/strong\u003e 21 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 400 V, Three Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmps:\u003c\/strong\u003e 32 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin breaker size:\u003c\/strong\u003e 40 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin cable size:\u003c\/strong\u003e 3 x 6 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow rate:\u003c\/strong\u003e Limited by water supply (3-phase recommended for baths).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax heating pressure:\u003c\/strong\u003e 1.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection class:\u003c\/strong\u003e IPX4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e Suitable for domestic hot water and central heating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 700 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 425 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 260 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 29.1 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties off the gas grid, flats, or where traditional boilers cannot be fitted.\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and Economy 10 tariffs for cost savings.\u003c\/li\u003e\n\u003cli\u003eInstallation: Wall-mounted; no flue needed; professional electrician required for three-phase supply.\u003c\/li\u003e\n\u003cli\u003eSupports central heating and domestic hot water; perfect replacement for gas\/oil systems.\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer warranty (extendable to 24 months upon registration).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":63454910808413,"sku":"SBTP21C","price":1430.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"},{"product_id":"strom-24kw-three-phase-combi-e-boiler-400v-electric-combi-boiler-touchscreen-no-flue","title":"Strom 24kW Three Phase Combi E-Boiler - 400V Electric Combi Boiler, Touchscreen, No Flue","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eStrom 24kW Three Phase Combi E-Boiler\u003c\/strong\u003e is a compact, high-efficiency electric combi boiler designed for properties without a gas supply, delivering instant hot water and central heating with a 24kW output, integrated pump, expansion vessel, and touchscreen controls.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Strom SBTP24C is a modern three-phase electric combi boiler engineered for seamless integration into existing heating systems. It features a serpentine heating element for rapid response, a full-colour touchscreen for intuitive operation, and no requirement for a flue or gas connection. Perfect for off-grid homes, flats, or properties on Economy 10 tariffs, it provides reliable hot water and space heating with near-silent operation and over 99% efficiency. The boiler includes a built-in pump and expansion vessel, making installation straightforward and space-efficient.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24kW output:\u003c\/strong\u003e Sufficient for heating and instant hot water in larger properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-phase 400V supply:\u003c\/strong\u003e Ideal for high-demand applications like multiple baths and showers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen interface:\u003c\/strong\u003e Simple controls and status display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo flue required:\u003c\/strong\u003e Can be installed almost anywhere, including cupboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated components:\u003c\/strong\u003e Pump and expansion vessel for complete system readiness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-silent operation:\u003c\/strong\u003e Minimal noise for residential comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency:\u003c\/strong\u003e Over 99% with zero CO2 emissions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SBTP24C – Strom 24kW Three Phase Combi E-Boiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat output:\u003c\/strong\u003e 24 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 400 V, Three Phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmps at 230VAC:\u003c\/strong\u003e 36 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin breaker size:\u003c\/strong\u003e 40 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin cable size:\u003c\/strong\u003e 3 x 6 mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow rate:\u003c\/strong\u003e Limited by water supply (3-phase recommended for baths).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax heating pressure:\u003c\/strong\u003e 1.5 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection class:\u003c\/strong\u003e IPX4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e Suitable for domestic hot water and central heating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDimensions \u0026amp; Weights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 700 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 425 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 260 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 29.1 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for properties off the gas grid, flats, or where traditional boilers cannot be fitted.\u003c\/li\u003e\n\u003cli\u003eCompatible with solar panels and Economy 10 tariffs for cost savings.\u003c\/li\u003e\n\u003cli\u003eInstallation: Wall-mounted; no flue needed; professional electrician required for three-phase supply.\u003c\/li\u003e\n\u003cli\u003eSupports central heating and domestic hot water; perfect replacement for gas\/oil systems.\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer warranty (extendable to 24 months upon registration).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"Default Title","offer_id":63454938399069,"sku":"SBTP24C","price":1470.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromSinglePhaseElectricBoiler_8d9c8ca4-3eac-432d-a59c-7974dd468386.png?v=1751972861"},{"product_id":"strom-touch-screen-instantaneous-electric-water-heater-9kw-11kw-13-5kw-single-phase-multipoint","title":"Strom Touch Screen Instantaneous Electric Water Heater 9kW 11kW 13.5kW Single Phase Multipoint","description":"\u003cdiv style=\"font-size: 16px; font-family: Arial,Helvetica,sans-serif; color: #1a1a1a; max-width: 900px; margin: 0 auto; line-height: 1.6;\"\u003e\n\u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n\u003cp style=\"margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eStrom Touch Screen Single Phase Instantaneous Water Heater\u003c\/strong\u003e is a \u003cstrong\u003ewall-mounted electric instantaneous (tankless) water heater\u003c\/strong\u003e available in \u003cstrong\u003e9kW, 11kW, and 13.5kW\u003c\/strong\u003e outputs — delivering an unlimited supply of hot water on demand at mains pressure, with no storage cylinder required. A compact 358 × 246 × 85mm body conceals a \u003cstrong\u003epatented enclosed-loop multi-strand heating element\u003c\/strong\u003e that heats water as it flows through, feeding multiple outlets simultaneously. The \u003cstrong\u003elarge widescreen LED touch screen\u003c\/strong\u003e displays both output and target temperatures in real time and gives audible feedback on button presses — set the exact temperature you want and the heater maintains it automatically. Splash-proof matte IMD front cover, automatic fault detection with on-screen error codes, and an ErP energy efficiency rating of \u003cstrong\u003eA\u003c\/strong\u003e across all variants. Suitable for \u003cstrong\u003edomestic multipoint hot water, shower feeds, kitchen and bathroom top-up, loft conversions, and off-gas properties\u003c\/strong\u003e. Minimum inlet pressure just \u003cstrong\u003e0.2 bar\u003c\/strong\u003e. \u003cstrong\u003e2-year manufacturer's warranty when registered within 45 days\u003c\/strong\u003e of purchase.\u003c\/p\u003e\n\u003c!-- ── RED INSTALLER CALLOUT ──────────────────────────────────── --\u003e\n\u003cdiv style=\"border-left: 4px solid #c0392b; background: #fff5f5; padding: 10px 16px; margin-bottom: 14px; border-radius: 0 6px 6px 0;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003e⚠ Part P Qualified Electrician Required\u003c\/strong\u003e — All variants require a \u003cstrong\u003ededicated circuit from the consumer unit\u003c\/strong\u003e wired by a Part P registered electrician. Minimum cable and breaker sizes vary by model — \u003cstrong\u003e9kW: 6mm² \/ 45A MCB; 11kW: 10mm² \/ 50A MCB; 13.5kW: 10mm² \/ 63A MCB\u003c\/strong\u003e. Ensure your consumer unit has a spare way of sufficient rating before ordering. Plumbing connections are standard ½\" BSP male and can be made by a competent person.\u003c\/div\u003e\n\u003c!-- ── TEAL VARIANT SELECTOR 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 Choosing Between 9kW, 11kW, and 13.5kW\u003c\/strong\u003e\u003cbr\u003eThe right output depends on your \u003cstrong\u003eincoming cold water temperature and your desired hot water flow rate\u003c\/strong\u003e. As a practical guide for UK mains temperatures (10–15°C inlet in winter): the \u003cstrong\u003e9kW\u003c\/strong\u003e delivers a comfortable 37°C at approximately 3.5 L\/min — sufficient for a single shower or basin. The \u003cstrong\u003e11kW\u003c\/strong\u003e raises this to approximately 4–5 L\/min at the same temperature — suitable for a standard shower head or one basin plus one outlet. The \u003cstrong\u003e13.5kW\u003c\/strong\u003e provides approximately 5–6 L\/min at 37°C — the best choice for higher-flow showers, multiple simultaneous outlets, or properties where the incoming cold water is particularly cold (e.g., rural mains or winter loft installations). Higher output always gives more flexibility; if in doubt, specify the next size up.\u003c\/div\u003e\n\u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 90px; background: #008377CF; color: #fff; border-radius: 6px; padding: 11px 8px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold;\"\u003e9 \/ 11 \/ 13.5 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003eThree variants\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: bold;\"\u003eUnlimited\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003eContinuous hot water\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: bold;\"\u003e0.2 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003eMin inlet pressure\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: bold;\"\u003eErP A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003eEnergy rated\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: bold;\"\u003e2 years\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 3px;\"\u003eWarranty (registered)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: 600; font-size: 15px; padding: 10px 16px; border-radius: 6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(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: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Patented Enclosed Loop Multi-Strand Heating Element\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eThe Strom instantaneous heater uses a \u003cstrong\u003epatented enclosed loop heating system\u003c\/strong\u003e with \u003cstrong\u003emultiple independent heating strands\u003c\/strong\u003e inside a single element unit. Unlike competitors that use a single strand — concentrating thermal stress at one point — Strom's multiple strands share the load, reducing element fatigue. \u003cstrong\u003eHeat is transferred across the entire surface area\u003c\/strong\u003e rather than through a localised hot spot, which eliminates the differential thermal stress that accelerates limescale deposition. The element is a single replaceable unit (not a submerged element inside a small tank), making servicing straightforward. Water is kept separate from the heating strands throughout, further reducing corrosion.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 13px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Multi-Layer Chamber — Reduced Limescale\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eThe \u003cstrong\u003emulti-layer heating chamber\u003c\/strong\u003e is specifically designed to reduce limescale accumulation — the most common cause of performance degradation and element failure in instantaneous water heaters. Because \u003cstrong\u003ehotspots are eliminated\u003c\/strong\u003e by the distributed heating surface, calcium carbonate (limescale) is less likely to precipitate and adhere at any single point. Over time, this means the heater maintains closer-to-original output temperatures and flow rates compared to single-strand element designs, which can lose significant efficiency as scale builds on the element surface. Particularly beneficial in hard water areas of England and Wales.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 13px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Touch Screen LED Display — Set Temperature \u0026amp; Hold\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eThe \u003cstrong\u003elarge widescreen LED touch screen\u003c\/strong\u003e simultaneously displays the \u003cstrong\u003ecurrent output temperature\u003c\/strong\u003e (what is coming out of the tap) and the \u003cstrong\u003etarget temperature\u003c\/strong\u003e (what you have set). Touch the up\/down buttons to set the desired output temperature and the heater's modulating element automatically adjusts power to maintain it — \u003cstrong\u003eno manual flow adjustment needed\u003c\/strong\u003e to chase a comfortable temperature. \u003cstrong\u003eAudible button feedback\u003c\/strong\u003e confirms every press. The display also shows \u003cstrong\u003eautomatic fault codes\u003c\/strong\u003e if a problem is detected — rather than the heater simply failing silently, the screen identifies the fault type, making diagnosis and service faster.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 13px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ Splash-Proof IMD Front Cover — Indoor Zones\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eThe \u003cstrong\u003eunique matte IMD (In-Mould Decoration) splash-proof front cover\u003c\/strong\u003e provides protection against water splashes from taps, showers, and accidental spills — making the unit safe for installation in bathrooms (in the appropriate IP zone), en-suites, kitchens, and utility rooms. IMD construction integrates the surface finish into the moulding itself, unlike printed overlays that can peel or fade over time. The matte ABS body is 358 × 246 × 85mm — shallower than a typical storage water heater — and can be surface-mounted to a wall or partially recessed into a stud partition.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 13px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ No Storage — No Heat Loss — No Legionella Risk from Store\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eAs a \u003cstrong\u003etrue instantaneous heater\u003c\/strong\u003e there is no stored water — cold water enters the unit only when a tap is opened, is heated as it passes through the element, and flows immediately to the outlet. This means \u003cstrong\u003ezero standing heat losses\u003c\/strong\u003e (the unit draws no energy when no hot water is being used) and \u003cstrong\u003eno stored water volume\u003c\/strong\u003e that could harbour Legionella. For properties where a storage cylinder poses a Legionella management burden — care homes, commercial premises, holiday lets — an instantaneous heater eliminates the stored water risk at source, though installer responsibility for system risk assessment remains.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 13px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 5px;\"\u003e✔ 0.2 Bar Minimum Pressure — Wide Compatibility\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px;\"\u003eA \u003cstrong\u003eminimum inlet pressure of just 0.2 bar\u003c\/strong\u003e means the Strom instantaneous heater works reliably even with poor mains pressure — covering \u003cstrong\u003erural properties, high-floor flats, loft conversions, and gravity-fed systems\u003c\/strong\u003e where many competitors' units would fail to activate. Maximum working pressure is 6 bar — within the range of all standard UK mains supplies. No pump or pressure booster is required in most domestic installations. The ½\" BSP male water connections match standard UK plumbing and can be connected directly to ½\" compression or push-fit fittings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ── VARIANT 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 Variants\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: 580px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #005c54; color: #fff;\"\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; font-weight: 600; border-bottom: 2px solid #008377CF;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: center; font-weight: 600; border-bottom: 2px solid #008377CF;\"\u003e9kW (SEIH9KTS2)\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: center; font-weight: 600; border-bottom: 2px solid #008377CF;\"\u003e11kW (SEIH11KTS2)\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: center; font-weight: 600; border-bottom: 2px solid #008377CF;\"\u003e13.5kW (SEIH14KTS2)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eHeat Output\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e\u003cstrong\u003e9.0 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e\u003cstrong\u003e11.0 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e\u003cstrong\u003e13.5 kW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eVoltage\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e230VAC\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e230VAC\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e230VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e40A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e48A\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e62A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMin. Cable Size\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e6mm²\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e10mm²\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e10mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMin. MCB \/ Breaker\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e\u003cstrong\u003e45A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e\u003cstrong\u003e50A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e\u003cstrong\u003e63A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMax. Recommended Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e5 L\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e6 L\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e7 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMin. Inlet Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e0.2 bar\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e0.2 bar\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e0.2 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eMax. Working Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e6 bar\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e6 bar\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e6 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eTemperature Cut-Out\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e67°C\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e67°C\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e67°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eWater Connections\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e½\" BSP male\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e½\" BSP male\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e½\" BSP male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eControl Method\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003eTouch screen LED\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003eTouch screen LED\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003eTouch screen LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eBody Material\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003eMatte ABS\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003eMatte ABS\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003eMatte ABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; border-bottom: 1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e358 × 246 × 85 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e358 × 246 × 85 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center; border-bottom: 1px solid #c8e6e3;\"\u003e358 × 246 × 85 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eErP Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e\u003cstrong\u003eA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e\u003cstrong\u003eA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e\u003cstrong\u003eA\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: 600; font-size: 15px; padding: 10px 16px; border-radius: 6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #c8e6e3; border-top: none; border-radius: 0 0 6px 6px; margin-bottom: 8px;\"\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"padding: 13px 16px; cursor: pointer; font-weight: 600; background: #f0faf9;\"\u003eWhat temperature will the hot water come out at?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eThe output temperature of an instantaneous heater depends on \u003cstrong\u003ethree variables: the input power (kW), the incoming cold water temperature, and the flow rate at the tap\u003c\/strong\u003e. The heater adds a fixed amount of thermal energy per litre flowing through it — the faster the flow, the smaller the temperature rise per litre. As a practical example: at a 12°C cold inlet and 40A rated current (9kW), running at 3 L\/min gives approximately a 42°C rise, delivering ~54°C at the heater outlet. Reduce flow to 2 L\/min and the rise increases; open a second tap and total flow rises, reducing the rise per litre. \u003cstrong\u003eYou adjust temperature by adjusting flow\u003c\/strong\u003e at the tap — the touch screen set point tells the heater the ceiling, not a guaranteed delivery temperature regardless of flow. The Strom's modulating element helps compensate for flow variation, but physics limits what any instantaneous heater can do at very high flow rates.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"padding: 13px 16px; cursor: pointer; font-weight: 600; background: #fff;\"\u003eCan I use this as the sole source of hot water in a property?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eYes — the Strom Touch Screen is designed for \u003cstrong\u003emultipoint whole-property hot water supply\u003c\/strong\u003e, not just a single point-of-use. A single 13.5kW unit can typically serve a 1–2 bathroom property with sequential (not fully simultaneous) demand. For larger properties or where two outlets run simultaneously at full flow (e.g., shower and bath filling together), two units on separate circuits may be needed — or a larger output is required. For properties currently on gas with a combi boiler, the electric instantaneous heater is the most direct equivalent: same on-demand delivery concept, same multipoint capability, no storage. The key difference is that electrical cost per kWh is higher than gas, so pairing with solar PV (using a diverter) or an off-peak tariff is recommended where possible.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"padding: 13px 16px; cursor: pointer; font-weight: 600; background: #f0faf9;\"\u003eDoes my consumer unit need upgrading?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eIt depends on the current state of your consumer unit. The \u003cstrong\u003e13.5kW model requires a 63A MCB\u003c\/strong\u003e on a dedicated circuit — most modern consumer units have ways available, but the busbars and main incomer must be rated for the additional load. If your property has an older 60A or 80A main fuse, adding a 63A circuit may exceed the total available supply — an electrician should assess this before purchase. The \u003cstrong\u003e9kW (45A MCB) and 11kW (50A MCB)\u003c\/strong\u003e are more likely to fit within existing capacity. A Part P registered electrician should always check the consumer unit rating, available ways, and total load before installation. In some cases a \u003cstrong\u003e100A supply upgrade\u003c\/strong\u003e from the DNO may be needed — this is typically free for residential properties below the threshold but takes several weeks to arrange.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"padding: 13px 16px; cursor: pointer; font-weight: 600; background: #fff;\"\u003eCan it be used with solar PV?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eYes — the Strom instantaneous water heater is fully compatible with \u003cstrong\u003esolar PV diversion\u003c\/strong\u003e. A solar diverter (such as the myenergi Eddi or an iBoost) monitors the property's generation and import\/export balance, and diverts surplus solar electricity to the water heater's supply when more is being generated than consumed. Because the instantaneous heater only draws power when hot water is being run, it is best used in combination with a solar diverter that can modulate power to the heater — match the heater to the diverter's compatible load range. This is one of the most effective ways to use surplus solar generation in properties without a hot water cylinder — displacing grid electricity consumption with effectively free hot water from daytime generation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"padding: 13px 16px; cursor: pointer; font-weight: 600; background: #f0faf9;\"\u003eWhat does the fault detection display?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 11px 16px; font-size: 14px;\"\u003eThe touch screen's \u003cstrong\u003eautomatic fault detection system\u003c\/strong\u003e monitors the heater's internal sensors and displays an on-screen error code when a fault condition is detected — rather than the unit simply cutting out with no indication. Common fault codes cover over-temperature (water or element above the 67°C safety cut-out), flow sensor errors (no water detected when power is applied), and element faults. The display of a specific code allows a service engineer to diagnose the issue before opening the unit, speeding up repair time. Error codes and their meanings are listed in the Strom installation and user manual, available from stromltd.com.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\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 Touch Screen instantaneous water heater carries a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e when registered at stromltd.com within \u003cstrong\u003e45 days of purchase\u003c\/strong\u003e. Registration requires the product serial number and proof of purchase date. If the product is not registered within 45 days, the warranty defaults to 1 year. The warranty covers manufacturing defects in materials and workmanship. Installation must have been carried out correctly by a competent electrician and plumber, and the unit must have been used within the specified pressure and electrical parameters. Strom can be contacted at 0333 344 24 74 or sales@stromltd.com for warranty and technical support.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Strom","offers":[{"title":"9kW - 1ph","offer_id":64257101398365,"sku":"SEIH9KTS2","price":290.0,"currency_code":"GBP","in_stock":true},{"title":"11kW - 1ph","offer_id":64257101431133,"sku":"SEIH11KTS2","price":320.0,"currency_code":"GBP","in_stock":true},{"title":"13.5 kW -1ph","offer_id":64257101463901,"sku":"SEIH14KTS2","price":330.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromTouchScreenInstantaneousElectricWaterHeater9kW11kW13.5kWSinglePhaseMultipoint.webp?v=1776666585"},{"product_id":"strom-auraheat-9kw-single-phase-35l-stored-combi-boiler-electric-combi-boiler-with-integrated-stainless-steel-cylinder","title":"Strom AuraHeat 9kW Single Phase Stored Combi Boiler - Electric Combi Boiler with 35L Integrated Stainless Steel Buffer Cylinder","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222222; line-height:1.6;\"\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eStrom AuraHeat 9.5kW Single Phase Stored Combi Boiler (SBSP9SC)\u003c\/strong\u003e uses Strom's patented \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e to overcome the flow-rate limitations of conventional instant electric combi boilers. At its core is a \u003cstrong\u003e35-litre stainless steel buffer tank\u003c\/strong\u003e that stores water heated to up to 80°C; when a hot water tap or shower opens, that stored hot water is fed through a \u003cstrong\u003edigital programmable blending valve\u003c\/strong\u003e and then back through the boiler's instantaneous heat exchanger for final temperature control. Because the heat exchanger is receiving pre-warmed water rather than cold mains water, it can sustain significantly higher flow rates — making this the first electric combi where filling a bath is a realistic prospect. With \u003cstrong\u003eno flue, zero local carbon monoxide, and near-silent operation\u003c\/strong\u003e, it is designed for off-grid, all-electric, and gas-free properties.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eFor central heating\u003c\/strong\u003e, the heat exchanger modulates from the full 9.5kW output to as little as 1kW to match the property's demand. \u003cstrong\u003eWhen a hot water outlet opens\u003c\/strong\u003e, the built-in diverter switches priority to the 35L tank — replicating the priority logic of a gas combi. With the tank fully charged, the boiler delivers a \u003cstrong\u003erecommended DHW flow rate of 10 L\/min at a 30°C temperature rise\u003c\/strong\u003e, at output temperatures of \u003cstrong\u003eup to 55°C\u003c\/strong\u003e. Even with the tank fully depleted, the heat exchanger continues to supply up to \u003cstrong\u003e7 L\/min\u003c\/strong\u003e of instant hot water; the tank then recharges in around \u003cstrong\u003e22 minutes\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:24px 0;\"\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e9.5kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eHeat Output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e46A \/ 50A MCB\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eRated Current \/ Min Breaker\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e35L\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eStainless Steel Tank\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e10 LPM\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eRecommended DHW Rate\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003eD \/ A\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eHeating \/ DHW ErP\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e920×570×300mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eH × W × D\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border-left:4px solid #c0392b; background-color:#fdecea; padding:12px 16px; margin:20px 0; border-radius:4px;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003ePart P Notifiable Electrical Work\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0 0;\"\u003eAs an electric boiler, connecting the SBSP9SC is \u003cstrong\u003enotifiable electrical work\u003c\/strong\u003e under Building Regulations. The electrical connection must be carried out by a \u003cstrong\u003ecompetent person registered with a Part P scheme\u003c\/strong\u003e (such as NICEIC), who must issue an electrical installation certificate on completion. The boiler draws \u003cstrong\u003e46A\u003c\/strong\u003e and requires a minimum \u003cstrong\u003e50A MCB\u003c\/strong\u003e and \u003cstrong\u003e10mm² minimum cable\u003c\/strong\u003e. Boiler installation is notifiable building work in its own right regardless of fuel type.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border-left:4px solid #008377; background-color:#e6f4f3; padding:12px 16px; margin:20px 0; border-radius:4px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eWhy the AuraHeat Stored Combi Outperforms a Standard Instant Electric Combi\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0 0;\"\u003eA standard instant electric combi boiler heats domestic hot water solely as it passes through the heat exchanger, so peak flow rate is constrained by how fast the element can transfer heat to cold mains water. The AuraHeat's \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e bypasses this limit by pre-heating mains water through the 35L stored tank before it reaches the heat exchanger, dramatically reducing the temperature rise the element needs to achieve — and allowing significantly higher sustained flow rates. The \u003cstrong\u003eprogrammable blending valve\u003c\/strong\u003e controls exactly how much stored hot water is mixed with incoming cold water, giving precise final temperature control and extending the effective duration of the stored heat.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:18px; margin:28px 0;\"\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eRecirc Technology With Digital Blending Valve\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eRather than feeding cold mains water directly to the heat exchanger, the AuraHeat stores water at up to \u003cstrong\u003e80°C in the 35L stainless steel tank\u003c\/strong\u003e, then mixes it with incoming cold mains water through a \u003cstrong\u003edigital programmable blending valve\u003c\/strong\u003e before returning the blend to the heat exchanger for final temperature trim. The result is that the heat exchanger sees pre-warmed water instead of cold water, enabling it to sustain the flow rates associated with gas combis. The hotter the tank, the longer it can keep the blended supply above the target temperature — extending the effective hot water duration well beyond what the 35L volume alone would suggest.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eFour Selectable Tank Modes\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe 35L tank can be operated in four ways to match how the household uses hot water. \u003cstrong\u003eAlways On\u003c\/strong\u003e keeps the tank heated continuously at the set temperature, ready for immediate use. \u003cstrong\u003eAlways Off\u003c\/strong\u003e leaves the tank unheated and allows the boiler to function as a standard instant electric combi. \u003cstrong\u003eBoost Once\u003c\/strong\u003e heats the tank a single time in around 22 minutes, useful when a bath is anticipated. \u003cstrong\u003eTimed On\u003c\/strong\u003e heats the tank at the same time each day, allowing the household to schedule heating around off-peak tariffs or daily routines.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003ePatented Multi-Strand Heat Exchanger\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eStrom's heat exchanger distributes the heating load across \u003cstrong\u003emultiple independent strands\u003c\/strong\u003e, transferring heat evenly across the whole surface. This eliminates the concentrated hotspots that cause limescale to bake onto single-element designs, and keeps the water circuit physically separated from the heating strands — reducing corrosion and allowing individual strand replacement rather than replacing the whole unit.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eSelf-Modulating 1kW to 9.5kW\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eBecause each strand can be switched independently, the boiler \u003cstrong\u003emodulates output from as little as 1kW up to 9.5kW\u003c\/strong\u003e in fine steps to match the central heating demand at any given moment. This reduces short-cycling, maintains a steadier flow temperature, and avoids the step-change behaviour of single-element electric boilers, all without the need for a separate weather compensation controller.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003e35-Litre Stainless Steel Tank With Integrated Coil\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe domestic hot water side of the cylinder is heated \u003cstrong\u003eindirectly via an integrated coil\u003c\/strong\u003e, keeping the DHW circuit separated from the central heating water. This limits contact between the DHW and the coil surface, giving significantly \u003cstrong\u003ebetter scale resistance\u003c\/strong\u003e than a direct-immersion arrangement — important in hard water areas where limescale build-up would otherwise shorten element life.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eAutomatic Diverter and Programmable DHW Priority\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eA \u003cstrong\u003ebuilt-in diverter valve\u003c\/strong\u003e automatically switches the heat exchanger's output from central heating to DHW as soon as an outlet opens, mirroring the priority logic of a gas combi boiler. Programmable parameters then let the installer or user set whether \u003cstrong\u003estored volume, instantaneous flow rate, or a balance of both\u003c\/strong\u003e takes precedence during draw-off — giving per-household tuning that a fixed factory setting cannot provide.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eFlue-Free, Zero Carbon Monoxide\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eWith \u003cstrong\u003eno combustion\u003c\/strong\u003e, the AuraHeat produces zero local carbon monoxide and requires no flue terminal, soffit clearance, or terminal guard. This opens siting options unavailable to gas or oil boilers: internal cupboards, flats, and properties where cutting through an external wall for a flue is impractical or impossible.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eTouchscreen With a Familiar Boiler Interface\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe on-board \u003cstrong\u003etouchscreen display\u003c\/strong\u003e replicates the layout that installers and homeowners already know from gas, oil, and LPG boilers, showing heating and hot water status, current temperature, and a weekly programme. Handover to the end user does not require retraining on an unfamiliar interface.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin:28px 0; font-size:15px;\"\u003e\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eGeneral\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eManufacturer\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eStrom Limited\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRange\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eAuraHeat Stored Electric Combi\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eManufacturer Part Number (MPN)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eSBSP9SC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eBoiler Type\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eElectric Stored Combination Boiler with 35L integrated stainless steel tank\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeat Output\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e9.5kW\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eLarger Model in Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eSBSP13SC (13.5kW)\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003ePhysical\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e920 × 570 × 300mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eWeight (Empty)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e40kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eWeight (Full)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e75kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eFlue Required\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eNo\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eElectrical Supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003ePhase\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eSingle Phase\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRated Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e230V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRated Current\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e46A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eMinimum Recommended Breaker Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e50A MCB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eMinimum Cable Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e10mm²\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003ePlumbing Connections\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Flow \u0026amp; Return\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e3\/4\" Male\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Inlet \u0026amp; Outlet\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e1\/2\" Male\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eFill Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e1\/2\" Male\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003ePressure Relief Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e1\/2\" Female\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eHeating Performance\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Temperature Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e30–80°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Circuit Pressure Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e0.5–3.0 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eErP Heating Rating\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eD\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eHot Water Performance\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHot Water Storage\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e35-litre stainless steel tank with integrated coil and programmable blending valve\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Temperature Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e30–55°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Circuit Pressure Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e0.1–6.0 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRecommended DHW Flow Rate (30°C rise)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e10 L\/min\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Flow Rate (Tank Depleted)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eUp to 7 L\/min\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eTank Reheat Time\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eApprox. 22 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDiverter Valve\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eIntegrated — automatic central heating \/ DHW switching\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eErP DHW Rating\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eA\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv style=\"margin:28px 0;\"\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat is Recirc Technology and why does it matter for flow rates?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eStandard instant electric combis feed cold mains water directly through the heat exchanger, limiting flow rate to however fast the element can raise the temperature. The AuraHeat's \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e stores hot water at up to 80°C in the 35L tank, then passes it through a \u003cstrong\u003edigital programmable blending valve\u003c\/strong\u003e before the heat exchanger — so the element is heating pre-warmed water rather than cold mains. This dramatically reduces the temperature rise required and allows the boiler to sustain \u003cstrong\u003e10 L\/min at a 30°C rise\u003c\/strong\u003e, a flow rate closer to what a gas combi achieves.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat are the four tank modes and when should each be used?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003e\n\u003cstrong\u003eAlways On\u003c\/strong\u003e keeps the tank continuously heated at the set temperature — best for households with unpredictable hot water demand throughout the day. \u003cstrong\u003eAlways Off\u003c\/strong\u003e disables tank heating so the boiler operates as a standard instant electric combi — useful on warmer days or lower demand periods. \u003cstrong\u003eBoost Once\u003c\/strong\u003e heats the tank a single time (in around 22 minutes), ideal when a bath or heavy use is planned. \u003cstrong\u003eTimed On\u003c\/strong\u003e heats the tank on a daily schedule, which works well alongside off-peak tariffs such as Economy 7.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat happens to hot water if the tank runs out mid-use?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eIf the 35L store is depleted during prolonged use, the boiler does not stop supplying hot water — the heat exchanger alone continues to deliver \u003cstrong\u003eup to 7 L\/min\u003c\/strong\u003e of instant hot water directly. Once the heavy demand ends, the tank recharges in around \u003cstrong\u003e22 minutes\u003c\/strong\u003e and returns to full Recirc performance.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eDoes the Strom AuraHeat 9.5kW need a flue?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eNo. As an electric boiler there is no combustion, so \u003cstrong\u003eno flue, terminal, or soffit clearance is required\u003c\/strong\u003e. The boiler must be wall-mounted with adequate clearance for servicing and ventilation as specified in Strom's installation manual.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWill this boiler require annual servicing under G3 (unvented cylinder) regulations?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eThe DHW circuit operates at mains pressure (0.1–6.0 bar) and the boiler includes a dedicated pressure relief connection. Whether the cylinder arrangement is classified as a G3 notifiable unvented system — and therefore requires a G3-qualified engineer and annual inspection — should be confirmed against Strom's AuraHeat installation documentation and your local authority's building control guidance before specifying.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat's the difference between the SBSP9SC and the SBSP13SC?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eBoth models share the same \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e, 35L stainless steel tank, four operation modes, and 920 × 570 × 300mm casing. The SBSP9SC delivers \u003cstrong\u003e9.5kW\u003c\/strong\u003e with a recommended DHW flow rate of 10 L\/min, while the SBSP13SC steps up to \u003cstrong\u003e13.5kW\u003c\/strong\u003e, a 12 L\/min recommended DHW rate, and a slightly shorter reheat time of 20 minutes. The 13.5kW model draws more current (62A vs 46A) and requires a larger MCB (63A vs 50A).\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":64982942318941,"sku":"SBSP9SC","price":2670.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromAuraHeatSinglePhaseStoredCombiBoiler-ElectricCombiBoilerwithIntegratedStainlessSteelCylinder.jpg?v=1781542593"},{"product_id":"strom-auraheat-13-5kw-single-phase-stored-combi-boiler-electric-combi-boiler-with-35l-integrated-stainless-steel-buffer-cylinder","title":"Strom AuraHeat 13.5kW Single Phase Stored Combi Boiler - Electric Combi Boiler with 35L Integrated Stainless Steel Buffer Cylinder","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222222; line-height:1.6;\"\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eStrom AuraHeat 13.5kW Single Phase Stored Combi Boiler (SBSP13SC)\u003c\/strong\u003e is the higher-output model in Strom's AuraHeat range, using the same patented \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e as the 9.5kW SBSP9SC but with greater heating headroom for properties with a higher heat loss or hot water demand. At its core is a \u003cstrong\u003e35-litre stainless steel buffer tank\u003c\/strong\u003e that stores water heated to up to 80°C; when a hot water outlet opens, stored hot water is fed through a \u003cstrong\u003edigital programmable blending valve\u003c\/strong\u003e and then back through the boiler's instantaneous heat exchanger for final temperature control. Pre-warming the incoming water through the stored tank rather than feeding cold mains water directly to the element is what gives the AuraHeat its \u003cstrong\u003egas-competitive flow rates\u003c\/strong\u003e. With \u003cstrong\u003eno flue, zero local carbon monoxide, and near-silent operation\u003c\/strong\u003e, it is designed for off-grid, all-electric, and gas-free properties.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eFor central heating\u003c\/strong\u003e, the heat exchanger modulates from the full 13.5kW output to as little as 1kW to match the property's demand. \u003cstrong\u003eWhen a hot water outlet opens\u003c\/strong\u003e, the built-in diverter switches priority to the 35L tank — replicating the priority logic of a gas combi. With the tank fully charged, the boiler delivers a \u003cstrong\u003erecommended DHW flow rate of 12 L\/min at a 30°C temperature rise\u003c\/strong\u003e, at output temperatures of \u003cstrong\u003eup to 55°C\u003c\/strong\u003e. Even with the tank fully depleted, the heat exchanger continues to supply up to \u003cstrong\u003e7 L\/min\u003c\/strong\u003e of instant hot water; the tank then recharges in around \u003cstrong\u003e20 minutes\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:24px 0;\"\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e13.5kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eHeat Output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e62A \/ 63A MCB\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eRated Current \/ Min Breaker\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e35L\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eStainless Steel Tank\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e12 LPM\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eRecommended DHW Rate\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003eD \/ A\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eHeating \/ DHW ErP\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e920×570×300mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eH × W × D\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border-left:4px solid #c0392b; background-color:#fdecea; padding:12px 16px; margin:20px 0; border-radius:4px;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003ePart P Notifiable Electrical Work — Higher Current Draw Than 9.5kW Model\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0 0;\"\u003eAs an electric boiler, connecting the SBSP13SC is \u003cstrong\u003enotifiable electrical work\u003c\/strong\u003e under Building Regulations. The electrical connection must be carried out by a \u003cstrong\u003ecompetent person registered with a Part P scheme\u003c\/strong\u003e (such as NICEIC), who must issue an electrical installation certificate on completion. The 13.5kW model draws \u003cstrong\u003e62A\u003c\/strong\u003e and requires a minimum \u003cstrong\u003e63A MCB\u003c\/strong\u003e and \u003cstrong\u003e10mm² minimum cable\u003c\/strong\u003e. Before specifying, confirm the property's single-phase supply head can comfortably accommodate a 63A sustained load — this is notably higher than the 50A MCB required by the 9.5kW SBSP9SC and should be checked against the DNO's agreed supply capacity.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border-left:4px solid #008377; background-color:#e6f4f3; padding:12px 16px; margin:20px 0; border-radius:4px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eWhy the AuraHeat Stored Combi Outperforms a Standard Instant Electric Combi\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0 0;\"\u003eA standard instant electric combi boiler heats domestic hot water solely as it passes through the heat exchanger, so peak flow rate is constrained by how fast the element can transfer heat to cold mains water. The AuraHeat's \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e bypasses this limit by pre-heating mains water through the 35L stored tank before it reaches the heat exchanger, dramatically reducing the temperature rise the element needs to achieve. The \u003cstrong\u003eprogrammable blending valve\u003c\/strong\u003e controls exactly how much stored hot water is mixed with incoming cold water, giving precise final temperature control and extending the effective duration of the stored heat. The 13.5kW SBSP13SC achieves a \u003cstrong\u003e12 L\/min recommended DHW rate at a 30°C rise\u003c\/strong\u003e — the same as many gas combis — within the same 920 × 570 × 300mm footprint as the 9.5kW model.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:18px; margin:28px 0;\"\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eRecirc Technology With Digital Blending Valve\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eRather than feeding cold mains water directly to the heat exchanger, the AuraHeat stores water at up to \u003cstrong\u003e80°C in the 35L stainless steel tank\u003c\/strong\u003e, then mixes it with incoming cold mains water through a \u003cstrong\u003edigital programmable blending valve\u003c\/strong\u003e before returning the blend to the heat exchanger for final temperature trim. The result is that the heat exchanger sees pre-warmed water instead of cold water, enabling it to sustain flow rates associated with gas combis. The hotter the tank, the longer it can keep the blended supply above the target temperature — extending the effective hot water duration well beyond what the 35L volume alone would suggest.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eFour Selectable Tank Modes\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe 35L tank can be operated in four ways to match how the household uses hot water. \u003cstrong\u003eAlways On\u003c\/strong\u003e keeps the tank heated continuously at the set temperature, ready for immediate use. \u003cstrong\u003eAlways Off\u003c\/strong\u003e leaves the tank unheated and allows the boiler to function as a standard instant electric combi. \u003cstrong\u003eBoost Once\u003c\/strong\u003e heats the tank a single time in around 20 minutes, useful when a bath is anticipated. \u003cstrong\u003eTimed On\u003c\/strong\u003e heats the tank at the same time each day, allowing the household to schedule heating around off-peak tariffs or daily routines.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003ePatented Multi-Strand Heat Exchanger\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eStrom's heat exchanger distributes the heating load across \u003cstrong\u003emultiple independent strands\u003c\/strong\u003e, transferring heat evenly across the whole surface. This eliminates the concentrated hotspots that cause limescale to bake onto single-element designs, and keeps the water circuit physically separated from the heating strands — reducing corrosion and allowing individual strand replacement rather than replacing the whole unit.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eSelf-Modulating 1kW to 13.5kW\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eBecause each strand can be switched independently, the boiler \u003cstrong\u003emodulates output from as little as 1kW up to 13.5kW\u003c\/strong\u003e in fine steps to match the central heating demand at any given moment. The wider span between minimum and maximum output makes this model better suited to larger properties with a wider swing between mild and cold day demand, without the short-cycling that a single fixed-output element would cause.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003e35-Litre Stainless Steel Tank With Integrated Coil\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe domestic hot water side of the cylinder is heated \u003cstrong\u003eindirectly via an integrated coil\u003c\/strong\u003e, keeping the DHW circuit separated from the central heating water. This limits contact between the DHW and the coil surface, giving significantly \u003cstrong\u003ebetter scale resistance\u003c\/strong\u003e than a direct-immersion arrangement — important in hard water areas where limescale build-up would otherwise shorten element life.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eAutomatic Diverter and Programmable DHW Priority\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eA \u003cstrong\u003ebuilt-in diverter valve\u003c\/strong\u003e automatically switches the heat exchanger's output from central heating to DHW as soon as an outlet opens, mirroring the priority logic of a gas combi boiler. Programmable parameters then let the installer or user set whether \u003cstrong\u003estored volume, instantaneous flow rate, or a balance of both\u003c\/strong\u003e takes precedence during draw-off — giving per-household tuning that a fixed factory setting cannot provide.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eMore Heating Headroom, Same Footprint\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe SBSP13SC shares the \u003cstrong\u003esame 920 × 570 × 300mm casing\u003c\/strong\u003e as the 9.5kW SBSP9SC and the same 35L stainless steel tank, but delivers 13.5kW of heat output and a faster tank recharge of 20 minutes. For properties with a higher calculated heat loss or greater hot water demand, stepping up to the 13.5kW adds no extra wall space requirement — only the electrical supply needs to be sized for the higher current draw.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eFlue-Free, Zero Carbon Monoxide\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eWith \u003cstrong\u003eno combustion\u003c\/strong\u003e, the AuraHeat produces zero local carbon monoxide and requires no flue terminal, soffit clearance, or terminal guard. This opens siting options unavailable to gas or oil boilers: internal cupboards, flats, and properties where cutting through an external wall for a flue is impractical or impossible.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin:28px 0; font-size:15px;\"\u003e\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eGeneral\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eManufacturer\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eStrom Limited\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRange\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eAuraHeat Stored Electric Combi\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eManufacturer Part Number (MPN)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eSBSP13SC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eBoiler Type\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eElectric Stored Combination Boiler with 35L integrated stainless steel tank\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeat Output\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e13.5kW\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eSmaller Model in Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eSBSP9SC (9.5kW)\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003ePhysical\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e920 × 570 × 300mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eWeight (Empty)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e43kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eWeight (Full)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e78kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eFlue Required\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eNo\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eElectrical Supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003ePhase\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eSingle Phase\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRated Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e230V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRated Current\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e62A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eMinimum Recommended Breaker Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e63A MCB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eMinimum Cable Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e10mm²\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003ePlumbing Connections\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Flow \u0026amp; Return\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e3\/4\" Male\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Inlet \u0026amp; Outlet\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e1\/2\" Male\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eFill Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e1\/2\" Male\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003ePressure Relief Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e1\/2\" Female\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eHeating Performance\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Temperature Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e30–80°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Circuit Pressure Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e0.5–3.0 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eErP Heating Rating\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eD\u003c\/td\u003e\n    \u003c\/tr\u003e\n\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003eHot Water Performance\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHot Water Storage\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e35-litre stainless steel tank with integrated coil and programmable blending valve\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Temperature Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e30–55°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Circuit Pressure Range\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e0.1–6.0 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eRecommended DHW Flow Rate (30°C rise)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e12 L\/min\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Flow Rate (Tank Depleted)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eUp to 7 L\/min\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eTank Reheat Time\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eApprox. 20 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDiverter Valve\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eIntegrated — automatic central heating \/ DHW switching\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eErP DHW Rating\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eA\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv style=\"margin:28px 0;\"\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat is Recirc Technology and why does it matter for flow rates?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eStandard instant electric combis feed cold mains water directly through the heat exchanger, limiting flow rate to however fast the element can raise the temperature. The AuraHeat's \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e stores hot water at up to 80°C in the 35L tank, then passes it through a \u003cstrong\u003edigital programmable blending valve\u003c\/strong\u003e before the heat exchanger — so the element is heating pre-warmed water rather than cold mains. This dramatically reduces the temperature rise required and allows the 13.5kW model to sustain \u003cstrong\u003e12 L\/min at a 30°C rise\u003c\/strong\u003e — matching the output of many gas combi boilers.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat are the four tank modes and when should each be used?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003e\n\u003cstrong\u003eAlways On\u003c\/strong\u003e keeps the tank continuously heated at the set temperature — best for households with unpredictable hot water demand throughout the day. \u003cstrong\u003eAlways Off\u003c\/strong\u003e disables tank heating so the boiler operates as a standard instant electric combi — useful on warmer days or lower demand periods. \u003cstrong\u003eBoost Once\u003c\/strong\u003e heats the tank a single time (in around 20 minutes), ideal when a bath or heavy use is planned. \u003cstrong\u003eTimed On\u003c\/strong\u003e heats the tank on a daily schedule, which works well alongside off-peak tariffs such as Economy 7.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat happens to hot water if the tank runs out mid-use?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eIf the 35L store is depleted during prolonged use, the boiler does not stop supplying hot water — the heat exchanger alone continues to deliver \u003cstrong\u003eup to 7 L\/min\u003c\/strong\u003e of instant hot water directly. Once the heavy demand ends, the tank recharges in around \u003cstrong\u003e20 minutes\u003c\/strong\u003e and returns to full Recirc performance.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eDoes the Strom AuraHeat 13.5kW need a flue?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eNo. As an electric boiler there is no combustion, so \u003cstrong\u003eno flue, terminal, or soffit clearance is required\u003c\/strong\u003e. The boiler must be wall-mounted with adequate clearance for servicing and ventilation as specified in Strom's installation manual.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWill this boiler require annual servicing under G3 (unvented cylinder) regulations?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eThe DHW circuit operates at mains pressure (0.1–6.0 bar) and the boiler includes a dedicated pressure relief connection. Whether the cylinder arrangement is classified as a G3 notifiable unvented system — and therefore requires a G3-qualified engineer and annual inspection — should be confirmed against Strom's AuraHeat installation documentation and your local authority's building control guidance before specifying.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat's the difference between the SBSP13SC and the SBSP9SC?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eBoth models share the same \u003cstrong\u003eRecirc Technology\u003c\/strong\u003e, 35L stainless steel tank, four operation modes, and 920 × 570 × 300mm casing. The SBSP13SC delivers \u003cstrong\u003e13.5kW\u003c\/strong\u003e with a recommended DHW flow rate of 12 L\/min and a tank reheat time of 20 minutes, while the SBSP9SC delivers \u003cstrong\u003e9.5kW\u003c\/strong\u003e, 10 L\/min, and reheats in 22 minutes. The 13.5kW model draws more current (62A vs 46A) and requires a larger MCB (63A vs 50A), and the property's single-phase supply head should be checked before specifying.\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":64983010476381,"sku":"SBSP13SC","price":2770.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromAuraHeatSinglePhaseStoredCombiBoiler-ElectricCombiBoilerwithIntegratedStainlessSteelCylinder.jpg?v=1781542593"},{"product_id":"strom-fittings-pack-for-combi-boilers-isolation-valve-kit-for-strom-electric-combi-auraheat-stored-combi-boilers","title":"Strom Fittings Pack for Combi Boilers - Isolation Valve Kit for Strom Electric Combi \u0026 AuraHeat Stored Combi Boilers","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222222; line-height:1.6;\"\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eStrom Fittings Pack for Combi Boilers\u003c\/strong\u003e provides the isolation valves needed to make the final heating and hot water connections to a Strom electric combi boiler. The pack includes \u003cstrong\u003etwo 22mm flat-faced isolation valves\u003c\/strong\u003e for the central heating flow and return, \u003cstrong\u003etwo 15mm flat-faced isolation valves\u003c\/strong\u003e for the domestic hot water inlet and outlet, and a \u003cstrong\u003e15mm male union\u003c\/strong\u003e for added flexibility when finishing off the pipework.\u003c\/p\u003e\n\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:24px 0;\"\u003e\n    \u003cdiv style=\"flex:1; min-width:160px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e4 + 1\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eIsolation Valves \u0026amp; Union\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:160px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e22mm \u0026amp; 15mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eHeating \u0026amp; DHW Connections\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:160px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003eFlat-Faced\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eCompression Isolation Valves\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:18px; margin:28px 0;\"\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eFlat-Faced Valves for Easier Servicing\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eflat-faced design\u003c\/strong\u003e lets in-line devices such as magnetic filters or scale reducers be fitted and removed without draining the system, and allows the boiler itself to be isolated for future servicing without draining the whole heating circuit.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eMatches Strom's Combi Connection Sizes\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe pack covers both connection sizes used on Strom electric combi boilers: \u003cstrong\u003e22mm (3\/4\") for the central heating flow and return\u003c\/strong\u003e, and \u003cstrong\u003e15mm (1\/2\") for the domestic hot water inlet and outlet\u003c\/strong\u003e, as set out in Strom's combi installation guidance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eTidy, Flexible Final Connections\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe included \u003cstrong\u003e15mm male union\u003c\/strong\u003e makes it easier to align and tighten the final domestic hot water joint without putting strain on the boiler's internal pipework, where over-tightening of irons can cause damage that isn't covered under warranty.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border-left:4px solid #d4900b; background-color:#fff8e6; padding:12px 16px; margin:20px 0; border-radius:4px;\"\u003e\n    \u003cstrong style=\"color:#9a6a00;\"\u003eOther Fittings Still Required\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0 0;\"\u003eThis pack covers \u003cstrong\u003eisolation on the heating and hot water connections only\u003c\/strong\u003e. Strom's installation guide separately requires a \u003cstrong\u003efilling loop, an automatic bypass valve (ABV), and a drain point\u003c\/strong\u003e at the lowest point of the heating system - none of these are included in this pack and should be sourced and fitted separately as part of a complete installation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin:28px 0; font-size:15px;\"\u003e\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003ePack Details\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eManufacturer\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eStrom Limited\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003ePack Contents\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e2 x 22mm flat-faced isolation valves, 2 x 15mm flat-faced isolation valves, 1 x 15mm male union\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Connection Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e22mm (3\/4\")\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Connection Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e15mm (1\/2\")\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eValve Type\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eFlat-faced compression isolation valves\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eCompatible With\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eStrom electric Combi and AuraHeat Stored Combi boilers (e.g. SBSP7C, SBSP11C, SBSP15C, SBSP9SC, SBSP13SC)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv style=\"margin:28px 0;\"\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat's included in the Strom Fittings Pack for Combi Boilers?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eThe pack contains \u003cstrong\u003etwo 22mm flat-faced isolation valves\u003c\/strong\u003e for the central heating flow and return, \u003cstrong\u003etwo 15mm flat-faced isolation valves\u003c\/strong\u003e for the domestic hot water inlet and outlet, and a \u003cstrong\u003e15mm male union\u003c\/strong\u003e to help finish off the hot water connection neatly.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhich Strom boilers does this pack fit?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eIt's designed for Strom's electric combi boilers, which all use the same \u003cstrong\u003e22mm (3\/4\") heating\u003c\/strong\u003e and \u003cstrong\u003e15mm (1\/2\") domestic hot water\u003c\/strong\u003e connection sizes - including the standard Combi range (such as SBSP7C, SBSP11C, SBSP15C) and the AuraHeat Stored Combi range (SBSP9SC, SBSP13SC).\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eDo I still need a filling loop and automatic bypass valve?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eYes. This pack provides \u003cstrong\u003eisolation valves only\u003c\/strong\u003e. Strom's installation guide separately calls for a filling loop, an automatic bypass valve (ABV), and a drain point at the lowest point of the system, none of which are included here and should be fitted as part of a complete, compliant installation.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhy use flat-faced isolation valves rather than standard valves?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003e\n\u003cstrong\u003eFlat-faced valves\u003c\/strong\u003e provide a sealed, flush face when closed, which makes it possible to disconnect downstream pipework, fit a filter, or remove the boiler for servicing without draining the entire heating system - something a standard compression or ball valve cannot do as cleanly.\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":64983028662621,"sku":"SBSVPC","price":89.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromFittingsPackforCombiBoilers-IsolationValveKitforStromElectricCombi_AuraHeatStoredCombiBoilers.jpg?v=1781543451"},{"product_id":"strom-system-fittings-pack-for-e-boilers-isolation-valve-kit-for-strom-electric-system-heat-only-boilers","title":"Strom System Fittings Pack for E-Boilers - Isolation Valve Kit for Strom Electric System \u0026 Heat Only Boilers","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222222; line-height:1.6;\"\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eStrom Fittings Pack for Combi Boilers\u003c\/strong\u003e provides the isolation valves needed to make the final heating and hot water connections to a Strom electric combi boiler. The pack includes \u003cstrong\u003etwo 22mm flat-faced isolation valves\u003c\/strong\u003e for the central heating flow and return, \u003cstrong\u003etwo 15mm flat-faced isolation valves\u003c\/strong\u003e for the domestic hot water inlet and outlet, and a \u003cstrong\u003e15mm male union\u003c\/strong\u003e for added flexibility when finishing off the pipework.\u003c\/p\u003e\n\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:24px 0;\"\u003e\n    \u003cdiv style=\"flex:1; min-width:160px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e4 + 1\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eIsolation Valves \u0026amp; Union\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:160px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e22mm \u0026amp; 15mm\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eHeating \u0026amp; DHW Connections\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:160px; background-color:#008377CF; color:#ffffff; text-align:center; padding:14px 8px; border-radius:6px;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003eFlat-Faced\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;\"\u003eCompression Isolation Valves\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:18px; margin:28px 0;\"\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eFlat-Faced Valves for Easier Servicing\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eflat-faced design\u003c\/strong\u003e lets in-line devices such as magnetic filters or scale reducers be fitted and removed without draining the system, and allows the boiler itself to be isolated for future servicing without draining the whole heating circuit.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eMatches Strom's Combi Connection Sizes\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe pack covers both connection sizes used on Strom electric combi boilers: \u003cstrong\u003e22mm (3\/4\") for the central heating flow and return\u003c\/strong\u003e, and \u003cstrong\u003e15mm (1\/2\") for the domestic hot water inlet and outlet\u003c\/strong\u003e, as set out in Strom's combi installation guidance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv\u003e\n      \u003cdiv style=\"font-weight:bold; font-size:17px; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:8px;\"\u003eTidy, Flexible Final Connections\u003c\/div\u003e\n      \u003cp style=\"margin:0;\"\u003eThe included \u003cstrong\u003e15mm male union\u003c\/strong\u003e makes it easier to align and tighten the final domestic hot water joint without putting strain on the boiler's internal pipework, where over-tightening of irons can cause damage that isn't covered under warranty.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border-left:4px solid #d4900b; background-color:#fff8e6; padding:12px 16px; margin:20px 0; border-radius:4px;\"\u003e\n    \u003cstrong style=\"color:#9a6a00;\"\u003eOther Fittings Still Required\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0 0;\"\u003eThis pack covers \u003cstrong\u003eisolation on the heating and hot water connections only\u003c\/strong\u003e. Strom's installation guide separately requires a \u003cstrong\u003efilling loop, an automatic bypass valve (ABV), and a drain point\u003c\/strong\u003e at the lowest point of the heating system - none of these are included in this pack and should be sourced and fitted separately as part of a complete installation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin:28px 0; font-size:15px;\"\u003e\n    \u003ctr style=\"background-color:#008377CF;\"\u003e\n      \u003ctd colspan=\"2\" style=\"padding:10px 12px; color:#ffffff; font-weight:bold;\"\u003ePack Details\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eManufacturer\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eStrom Limited\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003ePack Contents\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e2 x 22mm flat-faced isolation valves, 2 x 15mm flat-faced isolation valves, 1 x 15mm male union\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eHeating Connection Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e22mm (3\/4\")\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eDHW Connection Size\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003e15mm (1\/2\")\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eValve Type\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px; border-bottom:1px solid #cccccc;\"\u003eFlat-faced compression isolation valves\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eCompatible With\u003c\/td\u003e\n      \u003ctd style=\"padding:8px 12px;\"\u003eStrom electric Combi and AuraHeat Stored Combi boilers (e.g. SBSP7C, SBSP11C, SBSP15C, SBSP9SC, SBSP13SC)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv style=\"margin:28px 0;\"\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhat's included in the Strom Fittings Pack for Combi Boilers?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eThe pack contains \u003cstrong\u003etwo 22mm flat-faced isolation valves\u003c\/strong\u003e for the central heating flow and return, \u003cstrong\u003etwo 15mm flat-faced isolation valves\u003c\/strong\u003e for the domestic hot water inlet and outlet, and a \u003cstrong\u003e15mm male union\u003c\/strong\u003e to help finish off the hot water connection neatly.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhich Strom boilers does this pack fit?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eIt's designed for Strom's electric combi boilers, which all use the same \u003cstrong\u003e22mm (3\/4\") heating\u003c\/strong\u003e and \u003cstrong\u003e15mm (1\/2\") domestic hot water\u003c\/strong\u003e connection sizes - including the standard Combi range (such as SBSP7C, SBSP11C, SBSP15C) and the AuraHeat Stored Combi range (SBSP9SC, SBSP13SC).\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eDo I still need a filling loop and automatic bypass valve?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003eYes. This pack provides \u003cstrong\u003eisolation valves only\u003c\/strong\u003e. Strom's installation guide separately calls for a filling loop, an automatic bypass valve (ABV), and a drain point at the lowest point of the system, none of which are included here and should be fitted as part of a complete, compliant installation.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #008377; border-radius:4px; overflow:hidden;\"\u003e\n      \u003csummary style=\"background-color:#008377CF; color:#ffffff; padding:10px 14px; cursor:pointer; font-weight:bold; list-style:none;\"\u003eWhy use flat-faced isolation valves rather than standard valves?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 14px;\"\u003e\n\u003cstrong\u003eFlat-faced valves\u003c\/strong\u003e provide a sealed, flush face when closed, which makes it possible to disconnect downstream pipework, fit a filter, or remove the boiler for servicing without draining the entire heating system - something a standard compression or ball valve cannot do as cleanly.\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":64983032529245,"sku":"SBSVPS","price":57.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/StromFittingsPackforCombiBoilers-IsolationValveKitforStromElectricCombi_AuraHeatStoredCombiBoilers.jpg?v=1781543451"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/collections\/Strom-logo.png?v=1769146623","url":"https:\/\/qualityheating.co.uk\/collections\/strom.oembed?page=2","provider":"AIZO Quality Heating","version":"1.0","type":"link"}