{"title":"Thermal Stores","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA thermal store takes a fundamentally different approach to hot water delivery compared to a vented cylinder or a conventional unvented system. The vessel contains a static body of water — heated by immersion, a primary coil, or both — and incoming cold mains water passes through an internal heat exchanger coil, picking up heat and exiting at mains pressure through a blending valve. The stored water never leaves the vessel; the mains supply never enters it. This closed-loop arrangement is what sets thermal stores apart.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eThe key installation advantage: no G3, no Part G\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eBecause thermal stores are open vented by design, they fall outside the scope of Part G Building Regulations. They are not subject to the discharge requirements associated with traditional unvented cylinders, which means no G3-qualified installer is required, no tundish, no dedicated discharge pipework, and no annual safety inspection. For flats, apartments, and retrofit projects where running discharge pipework is impractical or cost-prohibitive, this is a significant advantage. The output is still mains-pressurised hot water — the regulatory simplicity does not come at the expense of performance.\u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWho specifies thermal stores?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThermal stores suit a wide range of applications. They are particularly well suited to flats and apartments where unvented cylinder installations are complex or simply not viable. They also appeal in properties with multiple heat sources — a boiler or district heating primary circuit alongside an immersion — where the indirect (Electric Plus) variants can accept heat from both simultaneously or in sequence. They work well with off-peak electricity tariffs and solar PV, storing heat generated during low-rate periods or surplus generation for use on demand.\u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eProducts in this collection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe \u003cstrong\u003eHarlequin HeatStream\u003c\/strong\u003e range covers both direct electric-only and indirect (Electric Plus) configurations. The indirect models include a primary coil rated for connection to a boiler, district heating, or other heat source alongside the immersion heaters. The inner tank is constructed from non-corrosive polypropylene, making it suitable for areas with poor water quality, and the compact 520 × 520 mm square footprint means it will fit standard airing cupboards and pass through a normal door opening. Where an external overflow connection is not available, internal overfill variants are available that require no external pipework at all.\u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe \u003cstrong\u003eMixergy Cube X\u003c\/strong\u003e brings smart controls and stratification technology to the thermal store format. Rather than heating the full vessel, it uses top-down stratification to heat the upper layer of water first, so hot water is available quickly without wasting energy on the entire stored volume. An embedded solar diverter allows surplus PV generation to be directed to the cylinder, and smart tariff integration via the Mixergy app enables scheduling around cheaper overnight rates.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWhat to consider when selecting\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCapacity sizing follows the same principles as any hot water cylinder: 150 litres suits most one- to two-bathroom properties; 210 litres is appropriate where demand is higher or where simultaneous draw-off from multiple outlets is expected. Unlike a direct unvented cylinder, a thermal store does not require an expansion vessel or T\u0026amp;P relief valve on the cold water inlet, simplifying the installation pipework. A boost immersion can bring 50 litres up to temperature within 20 minutes, providing a useful recovery option where off-peak scheduling is in use. Installers should confirm available electrical supply before specifying immersion wattage, particularly in flats where consumer unit capacity may be constrained.\u003c\/p\u003e","products":[{"product_id":"mixergy-cube-x-150l-smart-thermal-store","title":"Mixergy Cube X 150L Smart Thermal Store","description":"\u003cdiv style=\"font-family:Arial,sans-serif;font-size:16px;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eMixergy Cube X 150L Smart Thermal Store\u003c\/strong\u003e brings \u003cstrong\u003eMixergy's award-winning top-down heating intelligence\u003c\/strong\u003e to smaller properties and tighter retrofit spaces. \u003cstrong\u003eG3-exempt by design\u003c\/strong\u003e, it requires no discharge pipework and no annual Unvented certification — making it one of the most installer-friendly hot water solutions available. Whether the project is an apartment, maisonette, or a constrained social housing property, the Cube X 150L delivers smart, connected, energy-efficient hot water in a footprint that fits almost anywhere.\u003c\/p\u003e\n\n  \u003c!-- Stat Strip --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:24px 0;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e150L\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eStorage Capacity\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eErP B\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eEnergy Rating\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eG3-Free\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eNo Discharge Pipe\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e65°C\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eMax Store Temp\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e3 bar\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eDHW Max Pressure\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Callout: thermal store --\u003e\n  \u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;border-radius:6px;padding:16px 20px;margin:20px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eWhat is a Thermal Store?\u003c\/strong\u003e\u003cbr\u003e\n    Unlike a conventional unvented cylinder, the Cube X is a \u003cstrong\u003ethermal store\u003c\/strong\u003e: mains cold water is heated indirectly via an internal coil, so the stored water is never under mains pressure. This G3-exempt architecture means \u003cstrong\u003eno expansion vessel, no discharge pipe, and no annual safety inspection\u003c\/strong\u003e — while still delivering full mains-pressure hot water to all outlets.\n  \u003c\/div\u003e\n\n  \u003c!-- Feature Cards --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin:28px 0 14px;font-size:17px;font-weight:700;\"\u003eKey Features\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:28px;\"\u003e\n\n    \u003cdiv style=\"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 Top-Down Heating\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eMixergy's \u003cstrong\u003eunique heating element heats from the top down\u003c\/strong\u003e, creating a usable hot water layer immediately — meaning a 30% full tank delivers a hot shower rather than a tepid one. Energy is only spent heating what you need.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📱 App \u0026amp; Schedule Control\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eMixergy app\u003c\/strong\u003e (iOS \u0026amp; Android) gives residents full control: set heating schedules, boost hot water on demand, track energy use, and configure smart tariff integration — all remotely.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🏠 Ultra-Compact Footprint\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAt \u003cstrong\u003e520mm wide × 585mm deep × 1,315mm tall\u003c\/strong\u003e (inc. fittings), the 150L Cube X is purpose-built to slot into the tightest retrofit spaces — apartments, sheltered housing, and narrow airing cupboards included.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🤖 Machine Learning Demand Forecasting\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eConnected to the \u003cstrong\u003eMixergy IO platform\u003c\/strong\u003e, the cylinder learns household hot water patterns and adjusts heating automatically — reducing unnecessary heating while always ensuring adequate supply.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e⚡ Smart Tariff Compatible\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eWorks with \u003cstrong\u003etime-of-use tariffs\u003c\/strong\u003e like Octopus Agile to heat water during cheapest or negative-price periods. Future-proof for grid-balancing and demand side response programmes.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📊 Housing Provider Dashboard\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eMixergy IO dashboard\u003c\/strong\u003e allows housing managers to monitor cylinder health, temperatures, and energy use remotely across their entire portfolio — reducing field visits and service costs.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📋 RdSAP Recognised\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe Cube X is \u003cstrong\u003eofficially recognised in RdSAP\u003c\/strong\u003e, supporting improved SAP scores and higher EPC ratings. This helps housing providers and developers meet energy compliance targets on retrofit projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"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 Diverter Ready\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eWhere solar PV is fitted, the Cube X can divert \u003cstrong\u003esurplus solar generation into free hot water\u003c\/strong\u003e — maximising self-consumption and reducing grid energy bills without any additional diverter hardware on some configurations.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🔒 TMV \u0026amp; Safety Included\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAn \u003cstrong\u003eintegrated Thermostatic Mixing Valve\u003c\/strong\u003e delivers blended water at a safe temperature. The overfill connection provides a simple, passive safety vent — no complex discharge pipe arrangement required.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- Red Installer Callout --\u003e\n  \u003cdiv style=\"background:#fff5f5;border-left:4px solid #c0392b;border-radius:6px;padding:16px 20px;margin:20px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠️ Installation Requirements\u003c\/strong\u003e\u003cbr\u003e\n    Must be installed by a \u003cstrong\u003ecompetent heating engineer\u003c\/strong\u003e. G3 Unvented certification is not required, but all work must comply with Building and Water Regulations. The unit requires a dedicated \u003cstrong\u003e16A, 230–240V, 1.5mm² CSA\u003c\/strong\u003e electrical supply. Annual servicing is recommended to maintain performance and warranty.\n  \u003c\/div\u003e\n\n  \u003c!-- Spec Table --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin:28px 0 14px;font-size:17px;font-weight:700;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n    \u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n      \u003cth style=\"padding:10px 12px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"padding:10px 12px;text-align:left;\"\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003eCube X 150L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eNominal Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e150 Litres\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e520 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e585 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eHeight (inc. fittings)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e1,315 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eRequired Clearances\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003eW+50mm | D+50mm | H+475mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eDry Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e36 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eWet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e188 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003ePrimary Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e22mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eOverfill Pipe Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003eG ¾\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eElectrical Requirements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e16A, 230–240V, 1.5mm² CSA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eDHW Coil Max Operating Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003ePrimary Coil Pressure Drop @ 15 l\/min\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e107 mbar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eMax Permissible Storage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eStanding Heat Loss\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e1.12 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eErP Energy Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eB\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 16px;border-radius:6px;margin:32px 0 14px;font-size:17px;font-weight:700;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eHow is the Cube X different from a standard unvented cylinder?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eA standard unvented cylinder stores water at mains pressure and requires G3 registration, discharge pipe, and annual safety checks. The Cube X is a \u003cstrong\u003ethermal store\u003c\/strong\u003e: it stores water at atmospheric pressure and heats the DHW indirectly, making it \u003cstrong\u003eG3-exempt\u003c\/strong\u003e with significantly lower installation cost and compliance burden.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eIs 150L enough for a family home?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe 150L Cube X is best suited to \u003cstrong\u003e1–3 person households\u003c\/strong\u003e or properties with moderate hot water demand. Because Mixergy's top-down heating makes the full volume immediately usable (unlike bottom-up cylinders where the top layer is hottest), effective capacity is higher than in a comparable traditional cylinder. For larger families, consider the \u003cstrong\u003eCube X 210L\u003c\/strong\u003e.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eCan the Cube X be connected to a heat pump?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe Cube X 150L is a \u003cstrong\u003ethermal store with direct electric heating\u003c\/strong\u003e. Heat pump integration is possible via the Mixergy app and IO platform in compatible configurations — please consult Quality Heating for the most current compatibility guidance before ordering.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat connectivity does the cylinder require?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe unit connects via a \u003cstrong\u003ePowerline Ethernet adapter\u003c\/strong\u003e that uses your home's existing electrical wiring to carry the data signal to the broadband router. No Wi-Fi in the cupboard is needed, making it ideal for older properties with thick walls.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat happens if the internet goes down?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe cylinder continues to operate normally on its \u003cstrong\u003elast programmed schedule\u003c\/strong\u003e. The built-in gauge on the side also allows \u003cstrong\u003emanual control without any internet connection\u003c\/strong\u003e — residents can power the unit on or off and set basic heating using just the physical gauge.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the Cube X qualify for SAP\/EPC improvements?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eYes. The Cube X is \u003cstrong\u003eofficially recognised in RdSAP\u003c\/strong\u003e, meaning it can be used in SAP calculations and contributes positively to EPC ratings. This is valuable for housing providers under pressure to improve their stock's energy performance.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Mixergy","offers":[{"title":"Default Title","offer_id":63222463201629,"sku":"MX-150-CBW-520","price":2100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/MixergyCUBEXSmartThermalStore.webp?v=1769582215"},{"product_id":"mixergy-cube-x-210l-smart-thermal-store","title":"Mixergy Cube X 210L Smart Thermal Store","description":"\u003cdiv style=\"font-family:Arial,sans-serif;font-size:16px;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- Intro --\u003e\n  \u003cp\u003eThe \u003cstrong\u003eMixergy Cube X 210L Smart Thermal Store\u003c\/strong\u003e is a \u003cstrong\u003eG3-exempt, app-connected hot water cylinder\u003c\/strong\u003e engineered specifically for retrofit projects where space is tight and traditional unvented systems are impractical. Unlike conventional cylinders that heat the entire tank, the Cube X uses Mixergy's \u003cstrong\u003epatented top-down heating technology\u003c\/strong\u003e — only warming the water you actually need, slashing energy bills and recovery times in the process. Recognised in \u003cstrong\u003eRdSAP\u003c\/strong\u003e and designed to elevate EPC ratings, it is the smart cylinder of choice for housing providers, retrofit teams, and eco-conscious homeowners alike.\u003c\/p\u003e\n\n  \u003c!-- Stat Strip --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:24px 0;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e210L\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eStorage Capacity\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eErP B\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eEnergy Rating\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eG3-Free\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eNo Discharge Pipe\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e65°C\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eMax Store Temp\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e3 bar\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eDHW Max Pressure\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Callout: G3 Exempt --\u003e\n  \u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;border-radius:6px;padding:16px 20px;margin:20px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eG3 Exempt by Design\u003c\/strong\u003e\u003cbr\u003e\n    The Cube X is a \u003cstrong\u003ethermal store\u003c\/strong\u003e, not an unvented pressure cylinder. No discharge pipework is required, no G3 annual certification is needed, and no Unvented (G3) qualified engineer is mandatory for installation — dramatically cutting project costs and compliance overhead.\n  \u003c\/div\u003e\n\n  \u003c!-- Feature Cards --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin:28px 0 14px;font-size:17px;font-weight:700;\"\u003eKey Features\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:28px;\"\u003e\n\n    \u003cdiv style=\"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 Top-Down Heating\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eHot water accumulates from the \u003cstrong\u003etop of the tank downwards\u003c\/strong\u003e, so even a partially heated cylinder delivers usable hot water almost immediately. This means less energy wasted heating water that won't be used.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📱 Mixergy App Control\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eControl the cylinder remotely via the \u003cstrong\u003eMixergy iOS and Android app\u003c\/strong\u003e. Set schedules, monitor energy use, boost hot water on demand, and receive insights — all from your phone.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🏠 Retrofit-Ready Compact Design\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAt just \u003cstrong\u003e520mm wide × 585mm deep × 1,650mm tall\u003c\/strong\u003e (inc. fittings), the Cube X fits into tight airing cupboards and retrofit spaces where a traditional cylinder would not.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🤖 Machine Learning Optimisation\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe Mixergy IO platform uses \u003cstrong\u003emachine learning\u003c\/strong\u003e to predict hot water demand and optimise heating schedules automatically, reducing energy consumption without sacrificing comfort.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e☀️ Smart Tariff \u0026amp; Solar Ready\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eIntegrates with \u003cstrong\u003etime-of-use electricity tariffs\u003c\/strong\u003e (e.g. Octopus Agile) to heat water during cheapest periods. Solar PV diverter capability available — heat water from your own roof.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📊 Mixergy IO Housing Dashboard\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eHousing providers gain \u003cstrong\u003eremote visibility\u003c\/strong\u003e of all cylinders via the IO dashboard — monitoring temperatures, energy performance, and predictive maintenance alerts across their entire stock.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📏 Intuitive Gauge Interface\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eA \u003cstrong\u003ebuilt-in gauge on the side of the unit\u003c\/strong\u003e shows hot water level at a glance, with a simple power button to switch on or off — ideal for tenants unfamiliar with smart technology.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e🔒 Thermostatic Mixing Valve Included\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAn \u003cstrong\u003eintegrated thermostatic mixing valve (TMV)\u003c\/strong\u003e blends the stored water to a safe delivery temperature, protecting against scalding while maintaining high storage temperatures to manage legionella risk.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e📋 RdSAP \u0026amp; EPC Compliance\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eOfficially recognised in \u003cstrong\u003eRdSAP modelling\u003c\/strong\u003e, the Cube X supports improved SAP scores and elevated EPC ratings — helping housing providers meet energy performance targets on retrofit programmes.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- Red Installer Callout --\u003e\n  \u003cdiv style=\"background:#fff5f5;border-left:4px solid #c0392b;border-radius:6px;padding:16px 20px;margin:20px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠️ Installation Requirements\u003c\/strong\u003e\u003cbr\u003e\n    Must be installed by a \u003cstrong\u003ecompetent heating engineer\u003c\/strong\u003e. Although G3 certification is not required, all work must comply with current Building Regulations and Water Regulations. The unit requires \u003cstrong\u003e16A, 230–240V, 1.5mm² CSA\u003c\/strong\u003e electrical supply. Annual servicing is recommended to maintain performance and warranty validity.\n  \u003c\/div\u003e\n\n  \u003c!-- Spec Table --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin:28px 0 14px;font-size:17px;font-weight:700;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n    \u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n      \u003cth style=\"padding:10px 12px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"padding:10px 12px;text-align:left;\"\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003eCube X 210L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eNominal Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e210 Litres\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e520 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e585 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eHeight (inc. fittings)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e1,650 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eRequired Clearances\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003eW+50mm | D+50mm | H+475mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eDry Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e44 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eWet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e246 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003ePrimary Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e22mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eOverfill Pipe Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003eG ¾\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eElectrical Requirements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e16A, 230–240V, 1.5mm² CSA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eDHW Coil Max Operating Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003ePrimary Coil Pressure Drop @ 15 l\/min\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e134 mbar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eMax Permissible Storage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eStanding Heat Loss\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border-bottom:1px solid #c8e6e3;\"\u003e1.24 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eErP Energy Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eB\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 16px;border-radius:6px;margin:32px 0 14px;font-size:17px;font-weight:700;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the Cube X require G3 certification to install?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eNo. The Cube X is a \u003cstrong\u003ethermal store\u003c\/strong\u003e, not an unvented pressure vessel, so it is \u003cstrong\u003eexempt from G3 Unvented regulations\u003c\/strong\u003e. This means no G3-qualified engineer is legally required, no annual G3 safety certification is needed, and no discharge pipework has to be run to an external drain — significantly reducing installation cost and complexity.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat internet connection does the Cube X need?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe Cube X connects via a \u003cstrong\u003ePowerline Ethernet adapter\u003c\/strong\u003e (supplied), so it uses your existing home electrical wiring rather than Wi-Fi. This makes it ideal for properties with poor Wi-Fi signal in the airing cupboard. The Mixergy app then connects via your broadband router.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eCan the Cube X be used with solar PV?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eYes. Mixergy's \u003cstrong\u003eembedded solar diverter functionality\u003c\/strong\u003e allows the Cube X to use excess solar generation to heat water — maximising self-consumption and reducing electricity bills. Compatible with most solar PV installations via the Mixergy app and IO platform.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eIs the Cube X suitable for social housing retrofit?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eAbsolutely — it was \u003cstrong\u003edesigned for this purpose\u003c\/strong\u003e. Its compact footprint, G3-exempt status, and Mixergy IO dashboard (giving housing providers remote fleet management) make it the leading choice for retrofit programmes. Birmingham City Council was the first to deploy it at scale.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eHow does the Cube X keep water safe from legionella?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe unit stores water at up to \u003cstrong\u003e65°C\u003c\/strong\u003e — above the legionella growth range — and the integrated thermostatic mixing valve blends it to a safe delivery temperature at the tap. The Mixergy app also supports \u003cstrong\u003eanti-legionella pasteurisation cycles\u003c\/strong\u003e, which can be scheduled automatically.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat does the Mixergy IO dashboard show for housing providers?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe IO dashboard provides \u003cstrong\u003ereal-time and historical visibility\u003c\/strong\u003e of every connected cylinder: hot water temperatures, energy consumption, heating schedules, and alerts for potential faults. Machine learning then surfaces predictive maintenance insights to help reduce costly field service callouts.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Mixergy","offers":[{"title":"Default Title","offer_id":63222505505117,"sku":"MX-210-CBW-520","price":2370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/MixergyCUBEXSmartThermalStore.webp?v=1769582215"},{"product_id":"harlequin-heatstream-210-direct-electric-thermal-store","title":"Harlequin HeatStream 210L Direct Electric Thermal Store","description":"\u003cdiv style=\"font-family:Arial,sans-serif;font-size:16px;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp style=\"font-size:17px;margin-bottom:20px;\"\u003e\nThe \u003cstrong\u003eHarlequin HeatStream 210 Direct\u003c\/strong\u003e (model \u003cstrong\u003eHS210E\u003c\/strong\u003e) is a \u003cstrong\u003e210-litre open-vented electric thermal store\u003c\/strong\u003e built to supply \u003cstrong\u003emains-pressurised hot water\u003c\/strong\u003e to larger flats, apartments, and electrically heated homes. Sharing the same proven open-vented architecture as the 150-litre model, it is \u003cstrong\u003enot subject to Part G of the Building Regulations\u003c\/strong\u003e and requires \u003cstrong\u003eno G3 qualification\u003c\/strong\u003e for installation — yet delivers a substantially higher hot water output suited to households with heavier demand. With an \u003cstrong\u003eErP 'B' energy rating\u003c\/strong\u003e, a standing heat loss of just \u003cstrong\u003e1.24 kWh\/day\u003c\/strong\u003e, and the same space-efficient \u003cstrong\u003e520 × 520 mm square footprint\u003c\/strong\u003e, the HS210E is the natural choice where a larger reserve is required without a larger floor area.\n\u003c\/p\u003e\n\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e210 L\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eStorage Capacity\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eErP B\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eEnergy Rating\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e520 mm²\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eSquare Footprint\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e1.24 kWh\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eStanding Heat Loss\/Day\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e188 L\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eHot Water at 60°C Store\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Teal info callout --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;padding:14px 18px;border-radius:6px;margin-bottom:24px;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eHigher Capacity, Same Small Footprint:\u003c\/strong\u003e The HS210E stores \u003cstrong\u003e202 litres\u003c\/strong\u003e of water and can deliver up to \u003cstrong\u003e281 litres of usable hot water\u003c\/strong\u003e from a single charge at 70°C — making it suitable for larger households, peak-demand apartments, or properties transitioning away from gas. The footprint remains identical to the 150-litre model.\n\u003c\/div\u003e\n\n\u003c!-- Section heading --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eKey Features\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:28px;\"\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔵 No Part G \/ No G3 Qualification\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eopen-vented thermal store principle\u003c\/strong\u003e means no G3-qualified engineer, no expansion vessel and no T\u0026amp;P relief valve. Any competent heating engineer can install and commission the HS210E.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e⚡ Dual Immersion Heater — Fast Boost\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eFitted with a \u003cstrong\u003e3 kW + 3 kW dual-element immersion heater\u003c\/strong\u003e. The \u003cstrong\u003eshort boost element provides 50 litres of hot water within 20 minutes\u003c\/strong\u003e, covering sudden demand spikes while the long element brings the full store up to temperature overnight.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e☀️ Solar PV \u0026amp; Off-Peak Tariff Ready\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe 210-litre thermal mass is ideal for storing \u003cstrong\u003esolar PV surplus or overnight off-peak electricity\u003c\/strong\u003e. A fully heated store at 70°C can yield up to \u003cstrong\u003e281 litres of blended hot water\u003c\/strong\u003e — maximising the value of every cheap unit consumed.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e📐 Same 520 × 520 mm Footprint\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eDespite the larger capacity, the \u003cstrong\u003e520 × 520 mm base is unchanged\u003c\/strong\u003e. The HS210E is \u003cstrong\u003e1,650 mm tall\u003c\/strong\u003e — the extra height being the only dimensional difference from the 150-litre model. It still passes through a standard doorway.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🛡️ Non-Corrosive Construction\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003ePolyethylene outer shell\u003c\/strong\u003e for transport resilience; \u003cstrong\u003epolypropylene inner tank\u003c\/strong\u003e immune to corrosion in hard or aggressive water; \u003cstrong\u003estainless steel corrugated coils\u003c\/strong\u003e for high-efficiency heat transfer across the full 202-litre volume.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔧 Low Maintenance — All Connections on Top\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003eAll pipework connections are located on the top of the unit\u003c\/strong\u003e, making installation neat and accessible. Ongoing maintenance is simply a \u003cstrong\u003e6-monthly water level top-up\u003c\/strong\u003e — no annual safety inspection is mandatory.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🦠 Reduced Legionella Risk\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eA \u003cstrong\u003ethermostatic mixing valve (TMV)\u003c\/strong\u003e is supplied and pre-set to 45°C for safe delivery temperatures. The long immersion element can raise the full store to pasteurisation temperature when required, reducing Legionella risk.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🏗️ Versatile Property Fit\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eIdeal for \u003cstrong\u003elarger flats, apartments, houses and bungalows\u003c\/strong\u003e. The overfill can run to an external pipe or to an internal low-temperature waste. Where neither is practical, the SOJ internal overfill variant eliminates any external connection requirement.\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 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eTechnical Specifications\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:28px;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;width:50%;\"\u003eModel Code\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eHS210E\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eStorage Volume\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e202 litres (nominal)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eDimensions (L × W × H)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e520 × 520 × 1,650 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eEmpty Weight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e44 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFilled Weight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e246 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eErP Energy Rating\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eStanding Heat Loss\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e1.24 kWh\/24h\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eImmersion Heaters\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eDual element: 3 kW (short\/boost) + 3 kW (long)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFull Heat-Up (15–60°C, long element)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e210 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFull Heat-Up (15–60°C, both elements)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e105 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eBoost Reheat (45–60°C, short element)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e20 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHot Water at 15 l\/min (60°C store)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e188 litres (no reheat) \/ 50 litres (with boost)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHot Water at 15 l\/min (70°C store)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e281 litres\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eDHW Coil Max Operating Pressure\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eMax Storage Temperature\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e85°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePipe Connections\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e22 mm (all on top)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eOverfill Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eG ¾\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eOuter Tank Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003ePolyethylene\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eInner Tank Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003ePolypropylene\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eCoil Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eStainless steel corrugated\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eMPN\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eHS210E\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- Amber warning callout --\u003e\n\u003cdiv style=\"background:#fff8e1;border-left:4px solid #f59e0b;padding:14px 18px;border-radius:6px;margin-bottom:28px;\"\u003e\n  \u003cstrong style=\"color:#92400e;\"\u003eFloor Loading Note:\u003c\/strong\u003e When filled, the HS210E weighs \u003cstrong\u003e246 kg\u003c\/strong\u003e. Ensure the installation floor or shelf is rated to support this weight before positioning the unit. A solid, level, debris-free base that covers the entire tank footprint is required.\n\u003c\/div\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eFrequently Asked Questions\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eHow does the HS210E differ from the HS150E?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    The two models share an identical footprint (\u003cstrong\u003e520 × 520 mm\u003c\/strong\u003e) and the same construction, coil materials, and energy rating. The HS210E is \u003cstrong\u003e335 mm taller\u003c\/strong\u003e (1,650 mm vs 1,315 mm), holds \u003cstrong\u003e202 litres\u003c\/strong\u003e vs 152 litres, and delivers up to \u003cstrong\u003e281 litres of usable hot water\u003c\/strong\u003e at 70°C vs 180 litres — making it the right choice for larger households or heavier demand.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eIs the HeatStream 210 Direct suitable for a family home?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    Yes. With \u003cstrong\u003e188 litres of usable hot water at 15 l\/min draw-off without reheating\u003c\/strong\u003e (60°C store) and \u003cstrong\u003e281 litres at 70°C\u003c\/strong\u003e, the HS210E comfortably covers the hot water demands of a typical family. The short boost element also delivers a rapid top-up of 50 litres within 20 minutes.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the HeatStream 210 Direct need Part G compliance?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    No. As an \u003cstrong\u003eopen-vented thermal store\u003c\/strong\u003e, it is specifically exempt from Part G of the Building Regulations (England \u0026amp; Wales). No unvented discharge arrangement, no G3-qualified engineer, and no mandatory annual safety inspection are required.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eCan the HS210E work with a heat pump or solar PV?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    The HS210E (Direct model) uses \u003cstrong\u003eelectric immersion heaters only\u003c\/strong\u003e as the heat source. It is ideal for storing surplus solar PV energy or charging on off-peak tariffs. For integration with a heat pump or boiler via a primary heating coil, consider the \u003cstrong\u003eHeatStream 210 Indirect (Electric PLUS, HS210EPLUS)\u003c\/strong\u003e.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the overfill arrangement for the HS210E?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    The HS210E requires an \u003cstrong\u003eoverfill connection via the G ¾\" fitting\u003c\/strong\u003e. This can run to an external pipe or to a low-temperature internal waste pipe. Where no external or internal connection is practical, Harlequin's \u003cstrong\u003einternal overfill (SOJ) variant\u003c\/strong\u003e is available as an alternative.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat water quality is required for the HS210E?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    The unit is designed for \u003cstrong\u003etotal hardness below 200 mg\/litre\u003c\/strong\u003e and \u003cstrong\u003echloride content below 300 mg\/litre\u003c\/strong\u003e. Where water chemistry exceeds these values, a suitable upstream water treatment device should be installed. The polypropylene inner tank and stainless steel coils make it highly resistant to corrosion in most UK water conditions.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Harlequin","offers":[{"title":"Default Title","offer_id":64631012917597,"sku":"HS210E","price":1530.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HarlequinHeatStreamElectricThermalStoreDirect.webp?v=1778090532"},{"product_id":"harlequin-heatstream-150-direct-electric-thermal-store","title":"Harlequin HeatStream 150L Direct Electric Thermal Store","description":"\u003cdiv style=\"font-family: Arial,sans-serif; font-size: 16px; color: #1a1a1a; max-width: 900px; margin: 0 auto; line-height: 1.6;\"\u003e\n\u003c!-- Intro --\u003e\n\u003cp style=\"font-size: 17px; margin-bottom: 20px;\"\u003eThe \u003cstrong\u003eHarlequin HeatStream 150 Direct\u003c\/strong\u003e (model \u003cstrong\u003eHS150E\u003c\/strong\u003e) is a \u003cstrong\u003e150-litre open-vented thermal store\u003c\/strong\u003e designed to deliver \u003cstrong\u003emains-pressurised hot water\u003c\/strong\u003e in flats, apartments and electrically heated properties — without the complexity or regulatory burden of a traditional unvented cylinder. Because it operates on the open-vented thermal store principle, it is \u003cstrong\u003enot subject to Part G of the Building Regulations\u003c\/strong\u003e in the UK and requires \u003cstrong\u003eno G3 qualification\u003c\/strong\u003e for installation. With an \u003cstrong\u003eErP 'B' energy rating\u003c\/strong\u003e and a compact \u003cstrong\u003e520 mm × 520 mm square footprint\u003c\/strong\u003e, it is the ideal upgrade for modern airing cupboards and new-build apartments alike.\u003c\/p\u003e\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 16px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold;\"\u003e150 L\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eStorage Capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 16px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold;\"\u003eErP B\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eEnergy Rating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 16px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold;\"\u003e520 mm²\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eSquare Footprint\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 16px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold;\"\u003e1.12 kWh\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eStanding Heat Loss\/Day\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 8px; padding: 16px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 26px; font-weight: bold;\"\u003e3 kW + 3 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eDual Immersion Heaters\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Teal info callout --\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377CF; padding: 14px 18px; border-radius: 6px; margin-bottom: 24px;\"\u003e\n\u003cstrong style=\"color: #005c54;\"\u003eOpen-Vented Design — No Part G Compliance Required:\u003c\/strong\u003e Unlike traditional unvented hot water cylinders, the HeatStream 150 Direct is open-vented. This means there is no requirement for an expansion vessel, T\u0026amp;P relief valve or mandatory annual safety inspection — dramatically simplifying installation and ongoing ownership.\u003c\/div\u003e\n\u003c!-- Section heading --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; border-radius: 6px; margin-bottom: 18px;\"\u003e\u003cstrong style=\"font-size: 16px;\"\u003eKey Features\u003c\/strong\u003e\u003c\/div\u003e\n\u003c!-- Feature grid --\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 16px; margin-bottom: 28px;\"\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e🔵 No Part G \/ No G3 Qualification\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eOpen-vented operation means the unit \u003cstrong\u003ebypasses Part G of the Building Regulations\u003c\/strong\u003e. Any competent heating engineer can install it — no G3 qualification, no expansion vessel, no T\u0026amp;P relief valve needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e⚡ Dual Immersion Heater — Fast Boost\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eSupplied with a \u003cstrong\u003e3 kW + 3 kW dual-element immersion heater\u003c\/strong\u003e. The \u003cstrong\u003eshort boost element delivers 50 litres of hot water in just 20 minutes\u003c\/strong\u003e, perfect for morning demand peaks or off-peak tariff charging strategies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e☀️ Solar PV \u0026amp; Off-Peak Tariff Ready\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eDesigned to \u003cstrong\u003emaximise off-peak electricity tariffs and solar PV surplus energy\u003c\/strong\u003e. The large thermal mass stores cheap-rate energy efficiently, reducing running costs over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e📐 Compact 520 × 520 mm Footprint\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003esquare 520 × 520 mm base fits through a standard doorway\u003c\/strong\u003e and sits comfortably in a small airing cupboard. At \u003cstrong\u003e1,315 mm tall\u003c\/strong\u003e, it stores significantly more hot water within a smaller footprint than equivalent cylinders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e🛡️ Durable Non-Corrosive Construction\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003e\u003cstrong\u003eOuter shell in tough polyethylene\u003c\/strong\u003e resists transport damage; the \u003cstrong\u003einner tank is non-corrosive polypropylene\u003c\/strong\u003e, making it suitable even in hard or poor-quality water areas. \u003cstrong\u003eStainless steel corrugated coils\u003c\/strong\u003e deliver fast heat transfer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e🔧 Minimal Maintenance\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eMaintenance consists of a \u003cstrong\u003e6-monthly water top-up via the filling loop\u003c\/strong\u003e — no annual safety inspection is required. \u003cstrong\u003eAll connections are on top\u003c\/strong\u003e of the unit, simplifying installation and any future servicing visits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e🦠 Reduced Legionella Risk\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe thermostatic mixing valve (supplied) is \u003cstrong\u003eset nominally to 45°C for safe delivery\u003c\/strong\u003e, while the long immersion heater can raise store temperatures to pasteurise against Legionella risk when required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 8px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #005c54; margin-bottom: 8px;\"\u003e🏗️ Ideal for New Builds \u0026amp; Flats\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eSpecifically engineered for \u003cstrong\u003eapartments, flats, houses and bungalows\u003c\/strong\u003e. The simple overfill pipe can run externally or to an internal low-temperature waste — no specialist discharge arrangement required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Spec table --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; border-radius: 6px; margin-bottom: 18px;\"\u003e\u003cstrong style=\"font-size: 16px;\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 28px; font-size: 15px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600; width: 50%;\"\u003eModel Code\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eHS150E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eStorage Volume\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e152 litres (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eDimensions (L × W × H)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e520 × 520 × 1,315 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eEmpty Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e36 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eFilled Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e188 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eErP Energy Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eStanding Heat Loss\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e1.12 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eImmersion Heaters\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eDual element: 3 kW (short\/boost) + 3 kW (long), 27\" + full-depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eThermostat Pre-Set\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eNominally 70°C (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eFull Heat-Up (15–60°C, long element)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e156 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eFull Heat-Up (15–60°C, both elements)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e78 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eBoost Reheat (45–60°C, short element)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e20 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eHot Water Available at 15 l\/min (60°C store)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e113 litres (no reheat) \/ 50 litres (with boost reheat)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eHot Water Available at 15 l\/min (70°C store)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e180 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eDHW Coil Max Operating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eMax Storage Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003ePipe Connections\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e22 mm (all on top)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eOverfill Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eG ¾\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eOuter Tank Material\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003ePolyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eInner Tank Material\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eCoil Material\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eStainless steel corrugated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eMinimum Mains Flow (recommended)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e12 l\/min at 1 bar dynamic pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eMax Inlet Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003e3 bar (PRV recommended above this)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eTypical Building Type\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eFlats, Apartments, Houses, Bungalows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eMPN\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #c8e6e3;\"\u003eHS150E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Amber warning callout --\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f59e0b; padding: 14px 18px; border-radius: 6px; margin-bottom: 28px;\"\u003e\n\u003cstrong style=\"color: #92400e;\"\u003eInstallation Note:\u003c\/strong\u003e The HeatStream 150 Direct requires an overfill connection — either to an external pipe or to a low-temperature internal waste pipe. Models with an internal overfill (SOJ variants) require no external connection. A minimum mains supply of \u003cstrong\u003e12 l\/min at 1 bar dynamic pressure\u003c\/strong\u003e is recommended for optimum performance. Incoming supply pressure must not exceed \u003cstrong\u003e3 bar\u003c\/strong\u003e without a pressure reducing valve.\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; border-radius: 6px; margin-bottom: 18px;\"\u003e\u003cstrong style=\"font-size: 16px;\"\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdetails style=\"border: 1px solid #c8e6e3; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eDoes the HeatStream 150 Direct require a G3-qualified installer?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #f0faf9;\"\u003eNo. Because the HeatStream 150 Direct is an \u003cstrong\u003eopen-vented thermal store\u003c\/strong\u003e rather than a traditional unvented cylinder, it does \u003cstrong\u003enot require a G3-qualified engineer\u003c\/strong\u003e and is exempt from the unvented discharge requirements of Part G of the Building Regulations. Any competent heating technician can install it.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #c8e6e3; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eHow much hot water can the HS150E deliver before it needs to reheat?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #f0faf9;\"\u003eAt a draw-off rate of 15 l\/min with a store temperature of 60°C, the HS150E delivers \u003cstrong\u003e113 litres of usable hot water\u003c\/strong\u003e without reheating. At 70°C store temperature this rises to \u003cstrong\u003e180 litres\u003c\/strong\u003e. The boost immersion element can provide an additional \u003cstrong\u003e50 litres within 20 minutes\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #c8e6e3; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eCan the HeatStream 150 Direct use solar PV or an off-peak electricity tariff?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #f0faf9;\"\u003eYes — this is one of its key strengths. The large thermal mass is ideal for storing energy from \u003cstrong\u003esolar PV surplus\u003c\/strong\u003e or overnight \u003cstrong\u003eoff-peak electricity tariffs\u003c\/strong\u003e (such as Agile or Economy 7), reducing the cost of heating hot water significantly over time.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #c8e6e3; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat maintenance does the HeatStream 150 require?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #f0faf9;\"\u003eMaintenance is minimal: the internal water level should be topped up via the \u003cstrong\u003efilling loop every 6 months\u003c\/strong\u003e. No annual safety inspection is required. There are very few spare parts and no expansion vessel or T\u0026amp;P valve to service.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #c8e6e3; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWill the HeatStream 150 Direct fit in a standard airing cupboard?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #f0faf9;\"\u003eYes. The \u003cstrong\u003e520 × 520 mm square footprint\u003c\/strong\u003e is specifically designed to fit through a standard door opening and into the smaller airing cupboards common in new-build flats and apartments. At 1,315 mm tall, it is a practical choice where ceiling height is not restricted.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #c8e6e3; border-radius: 6px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eIs the HeatStream 150 Direct suitable for hard water areas?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #f0faf9;\"\u003eYes. The \u003cstrong\u003enon-corrosive polypropylene inner tank\u003c\/strong\u003e and \u003cstrong\u003estainless steel coils\u003c\/strong\u003e are well-suited to challenging water quality. The installation manual specifies a maximum total hardness of 200 mg\/litre and chloride content below 300 mg\/litre; where water exceeds this, appropriate treatment should be installed upstream.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Harlequin","offers":[{"title":"Default Title","offer_id":64634066010461,"sku":"HS150E","price":1395.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HarlequinHeatStream150DirectElectricThermalStore.webp?v=1778136433"},{"product_id":"harlequin-heatstream-150-indirect-electric-plus-thermal-store","title":"Harlequin HeatStream 150 Indirect Electric PLUS Thermal Store","description":"\u003cdiv style=\"font-family:Arial,sans-serif;font-size:16px;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp style=\"font-size:17px;margin-bottom:20px;\"\u003e\nThe \u003cstrong\u003eHarlequin HeatStream 150 Indirect\u003c\/strong\u003e — sold as the \u003cstrong\u003eHeatStream 150 Electric PLUS\u003c\/strong\u003e (model \u003cstrong\u003eHS150EPLUS\u003c\/strong\u003e) — is a \u003cstrong\u003e150-litre open-vented thermal store\u003c\/strong\u003e engineered for properties where \u003cstrong\u003eboth electricity and a traditional primary heat source\u003c\/strong\u003e (such as a gas, oil or LPG boiler, or district heating) are available. It builds on the award-winning HeatStream Electric platform by adding a \u003cstrong\u003estainless steel primary coil rated to 14 bar\u003c\/strong\u003e, enabling pre-heating of the store from a central heating circuit in as little as \u003cstrong\u003e10 minutes\u003c\/strong\u003e. Like all HeatStream models, it is \u003cstrong\u003enot subject to Part G of the Building Regulations\u003c\/strong\u003e, requires \u003cstrong\u003eno G3 qualification\u003c\/strong\u003e and delivers \u003cstrong\u003emains-pressurised hot water\u003c\/strong\u003e with minimal maintenance — making it the definitive upgrade for flats, apartments and houses moving towards a hybrid or multi-source heating strategy.\n\u003c\/p\u003e\n\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e150 L\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eStorage Capacity\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eErP B\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eEnergy Rating\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e14 bar\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003ePrimary Coil Rating\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e10 min\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003ePre-Heat via Boiler\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e1.12 kWh\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eStanding Heat Loss\/Day\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Teal info callout --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;padding:14px 18px;border-radius:6px;margin-bottom:24px;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eWhat Makes the PLUS Different?\u003c\/strong\u003e The HeatStream Electric PLUS adds a \u003cstrong\u003efactory-fitted primary heat source coil\u003c\/strong\u003e to the standard Electric model. This coil connects to any external heat source — gas boiler, oil boiler, LPG, district heating or heat pump — and rapidly pre-heats the store. The immersion heaters remain available as backup or boost heating, giving total flexibility across changing energy strategies.\n\u003c\/div\u003e\n\n\u003c!-- Section heading --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eKey Features\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:28px;\"\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔵 No Part G \/ No G3 Qualification\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eOpen-vented design means the HS150EPLUS is \u003cstrong\u003eexempt from Part G of the Building Regulations\u003c\/strong\u003e and requires no G3-qualified engineer, no expansion vessel and no T\u0026amp;P relief valve — significantly reducing installation complexity and cost.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔥 Dual Heat Source — Primary Coil + Immersion\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eprimary stainless steel coil\u003c\/strong\u003e connects to a gas, oil, LPG or district heating circuit and pre-heats the full 150-litre store in as little as \u003cstrong\u003e20 minutes\u003c\/strong\u003e. The \u003cstrong\u003e3 kW + 3 kW immersion heater\u003c\/strong\u003e provides independent backup and boost heating.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🏗️ 14-Bar Primary Coil — District Heating Ready\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eprimary coil is rated to 14 bar\u003c\/strong\u003e, making it fully compatible with high-pressure district heating networks in addition to conventional domestic boiler circuits. Pressure drop at 15 l\/min is just 107 mbar.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e☀️ Solar PV \u0026amp; Off-Peak Tariff Compatible\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eUse cheap overnight electricity or solar PV surplus via the immersion heaters, and top up with the boiler during peak demand. The \u003cstrong\u003e150-litre thermal mass buffers energy efficiently\u003c\/strong\u003e regardless of which source provides the heat.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e📐 Compact 520 × 520 mm Square Footprint\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003e1,315 mm tall with a 520 × 520 mm base\u003c\/strong\u003e — the PLUS model is only marginally heavier than the standard Electric at 39 kg empty (191 kg filled), and fits through a standard doorway or into a small airing cupboard without difficulty.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🛡️ Durable Non-Corrosive Construction\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003ePolyethylene outer shell\u003c\/strong\u003e, \u003cstrong\u003epolypropylene inner tank\u003c\/strong\u003e and \u003cstrong\u003estainless steel corrugated coils\u003c\/strong\u003e combine to deliver a corrosion-resistant, long-life product suitable for all UK water quality conditions including hard water and chloride-rich supplies.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔧 Simple Installation — All Connections on Top\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003eAll domestic hot water and primary circuit connections are on top\u003c\/strong\u003e of the unit. The primary coil connects via 22 mm compression fittings. The integrated heat source coil thermostat (pre-set 65°C, adjustable 45–75°C) controls primary circuit flow automatically.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🦠 Reduced Legionella Risk\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eA \u003cstrong\u003ethermostatic mixing valve\u003c\/strong\u003e is supplied and pre-set to 45°C. Both heat sources can drive the store well above pasteurisation temperature, significantly \u003cstrong\u003ereducing the risk of Legionella proliferation\u003c\/strong\u003e. No annual safety inspection is required.\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 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eTechnical Specifications\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:28px;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;width:50%;\"\u003eModel Code\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eHS150EPLUS\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eStorage Volume\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e152 litres (nominal)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eDimensions (L × W × H)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e520 × 520 × 1,315 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eEmpty Weight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e39 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFilled Weight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e191 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eErP Energy Rating\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eStanding Heat Loss\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e1.12 kWh\/24h\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eImmersion Heaters\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eDual element: 3 kW (short\/boost) + 3 kW (long)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHeat-Up via Primary Coil (15–60°C at 15 l\/min)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e20 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFull Heat-Up via Long Immersion (15–60°C)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e156 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFull Heat-Up via Both Immersions (15–60°C)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e78 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eBoost Reheat (45–60°C, short element)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e20 minutes (50 litres)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHot Water at 15 l\/min (60°C store)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e113 litres (no reheat)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHot Water at 15 l\/min (70°C store)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e180 litres\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eDHW Coil Max Operating Pressure\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Max Operating Pressure\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e14 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Pressure Drop at 15 l\/min\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e107 mbar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Connections\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e22 mm compression\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Thermostat (pre-set \/ range)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e65°C pre-set \/ adjustable 45–75°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eMax Storage Temperature\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e85°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePipe Connections (DHW)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e22 mm (all on top)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eOverfill Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eG ¾\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eCompatible Heat Sources\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eGas boiler, oil boiler, LPG, district heating, heat pump\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eOuter Tank Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003ePolyethylene\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eInner Tank Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003ePolypropylene\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eCoil Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eStainless steel corrugated\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eMPN\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eHS150EPLUS\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- Amber warning callout --\u003e\n\u003cdiv style=\"background:#fff8e1;border-left:4px solid #f59e0b;padding:14px 18px;border-radius:6px;margin-bottom:28px;\"\u003e\n  \u003cstrong style=\"color:#92400e;\"\u003ePrimary Circuit Requirement:\u003c\/strong\u003e The primary heating circuit supplying heat to the PLUS model must be \u003cstrong\u003efully pumped\u003c\/strong\u003e — gravity circulation is not suitable. The primary coil thermostat is factory pre-set to 65°C and should be adjusted only by a competent engineer. Isolate the power supply before removing any protective covers.\n\u003c\/div\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eFrequently Asked Questions\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the difference between the HeatStream Electric and the HeatStream Electric PLUS?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    The core difference is a \u003cstrong\u003efactory-fitted primary heating coil\u003c\/strong\u003e. The standard Electric model uses electric immersion heaters only. The Electric PLUS adds a \u003cstrong\u003estainless steel primary coil\u003c\/strong\u003e connected to a boiler or other external heat source, enabling much faster heat-up (20 minutes vs 78–156 minutes electrically) and compatibility with gas, oil, LPG, district heating or heat pump circuits.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eIs the HeatStream 150 Indirect compatible with a heat pump?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    Yes. The primary coil operates with any \u003cstrong\u003efully pumped heat source\u003c\/strong\u003e, including air source and ground source heat pumps. The coil's large stainless steel surface area and low pressure drop (107 mbar at 15 l\/min) are well matched to the lower flow temperatures and higher flow rates typical of heat pump systems.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhy is the primary coil rated to 14 bar?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    The \u003cstrong\u003e14-bar primary coil rating\u003c\/strong\u003e makes the HS150EPLUS fully compatible with high-pressure \u003cstrong\u003edistrict heating networks\u003c\/strong\u003e, which can operate at significantly higher pressures than domestic boilers. This makes it suitable for apartment blocks and mixed-use developments connected to communal or district systems.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the HeatStream 150 Indirect need a G3-qualified engineer?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    No. As an \u003cstrong\u003eopen-vented thermal store\u003c\/strong\u003e, the HS150EPLUS does not fall under the unvented Part G regulations and no G3 qualification is required. Any competent heating engineer can install it. Building regulations applicable are Northern Ireland Technical Booklet P3, Republic of Ireland TGD L, and England \u0026amp; Wales Approved Document G3 (as an open-vented exempt product).\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eHow does the primary coil thermostat work?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    The factory-fitted \u003cstrong\u003eprimary coil thermostat is pre-set to 65°C\u003c\/strong\u003e and is adjustable between 45°C and 75°C to suit different heat sources and desired store temperatures. An integrated high-limit safety stat cuts power to the circuit if the store overheats, requiring a manual reset once the water has cooled.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat maintenance does the HeatStream 150 Indirect require?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    Maintenance requirements are deliberately minimal: the \u003cstrong\u003einternal water level should be topped up every 6 months\u003c\/strong\u003e via the filling loop. No annual safety inspection is required. It is also recommended that a \u003cstrong\u003ecentral heating filter\u003c\/strong\u003e is fitted on the primary heat supply circuit to protect internal coil components.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Harlequin","offers":[{"title":"Default Title","offer_id":64634142228829,"sku":"HS150EPLUS","price":1595.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HarlequinHeatStream150DirectElectricThermalStore.webp?v=1778136433"},{"product_id":"harlequin-heatstream-210-indirect-electric-plus-thermal-store","title":"Harlequin HeatStream 210 Indirect Electric PLUS Thermal Store","description":"\u003cdiv style=\"font-family:Arial,sans-serif;font-size:16px;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp style=\"font-size:17px;margin-bottom:20px;\"\u003e\nThe \u003cstrong\u003eHarlequin HeatStream 210 Indirect\u003c\/strong\u003e — sold as the \u003cstrong\u003eHeatStream 210 Electric PLUS\u003c\/strong\u003e (model \u003cstrong\u003eHS210EPLUS\u003c\/strong\u003e) — is the flagship of the HeatStream range: a \u003cstrong\u003e210-litre open-vented thermal store\u003c\/strong\u003e that accepts heat from \u003cstrong\u003eboth electric immersion heaters and a separate primary heat source\u003c\/strong\u003e such as a gas or oil boiler, heat pump, or district heating network. With a \u003cstrong\u003e14-bar rated primary coil\u003c\/strong\u003e capable of pre-heating the full store in \u003cstrong\u003e24 minutes\u003c\/strong\u003e, and a standing heat loss of only \u003cstrong\u003e1.24 kWh\/day\u003c\/strong\u003e, the HS210EPLUS is the ideal high-capacity solution for larger homes and apartments making the transition to hybrid or all-electric heating. As with all HeatStream models, it is \u003cstrong\u003eopen-vented and exempt from Part G of the Building Regulations\u003c\/strong\u003e, requiring no G3-qualified engineer and no mandatory annual safety inspection.\n\u003c\/p\u003e\n\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e210 L\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eStorage Capacity\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eErP B\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eEnergy Rating\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e14 bar\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003ePrimary Coil Rating\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e281 L\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eHot Water at 70°C Store\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px 12px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e24 min\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003ePrimary Coil Heat-Up\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Teal info callout --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;padding:14px 18px;border-radius:6px;margin-bottom:24px;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eThe Highest-Capacity HeatStream with Full Multi-Source Flexibility:\u003c\/strong\u003e The HS210EPLUS combines \u003cstrong\u003e202 litres of thermal storage\u003c\/strong\u003e, a \u003cstrong\u003e14-bar primary coil\u003c\/strong\u003e for rapid boiler or district heating charge, and a \u003cstrong\u003e3 kW + 3 kW immersion heater\u003c\/strong\u003e for electric backup and boost — all in the same compact 520 × 520 mm footprint as the 150-litre models. Up to \u003cstrong\u003e281 litres of usable hot water\u003c\/strong\u003e can be delivered at 15 l\/min from a single charge at 70°C.\n\u003c\/div\u003e\n\n\u003c!-- Section heading --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eKey Features\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:28px;\"\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔵 No Part G \/ No G3 Qualification\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eopen-vented thermal store design\u003c\/strong\u003e places the HS210EPLUS outside the scope of Part G, meaning no G3-qualified engineer, no expansion vessel and no T\u0026amp;P relief valve. Any competent heating technician can install and commission it.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔥 Fast Primary Coil Heat-Up — 24 Minutes\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003efactory-fitted primary coil heats the full 210-litre store in just 24 minutes\u003c\/strong\u003e at 15 l\/min primary flow (15–60°C). This dramatically outperforms immersion-only heat-up times, ensuring rapid hot water recovery after heavy use.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🏗️ 14-Bar Primary Coil — District Heating Compatible\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eRated to \u003cstrong\u003e14 bar operating pressure\u003c\/strong\u003e, the primary coil is suitable for high-pressure district heating networks as well as conventional gas, oil and LPG boilers. Primary coil pressure drop at 15 l\/min is 134 mbar — well within standard pump capabilities.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e⚡ Dual Immersion Heater Backup \u0026amp; Boost\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003e3 kW + 3 kW immersion heater\u003c\/strong\u003e operates independently of the primary coil. The short boost element delivers \u003cstrong\u003e50 litres within 20 minutes\u003c\/strong\u003e when the boiler circuit is unavailable. Both elements can run simultaneously with the primary coil for maximum recovery speed.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e☀️ Solar PV \u0026amp; Off-Peak Tariff Ready\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eCharge the 210-litre store with cheap overnight electricity or solar PV surplus via the immersion elements, then top up via the boiler when primary heat is cheapest. The \u003cstrong\u003ecombination of sources maximises energy cost savings\u003c\/strong\u003e throughout the year.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e📐 Same Compact 520 × 520 mm Footprint\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eAt \u003cstrong\u003e520 × 520 × 1,650 mm\u003c\/strong\u003e and 48 kg empty (250 kg filled), the HS210EPLUS carries a larger water mass but an identical floor footprint to the 150-litre PLUS model. It passes through a standard doorway and fits into most plant rooms or airing cupboards.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🛡️ Non-Corrosive Long-Life Construction\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003ePolyethylene outer shell\u003c\/strong\u003e, \u003cstrong\u003epolypropylene inner tank\u003c\/strong\u003e and \u003cstrong\u003estainless steel corrugated coils\u003c\/strong\u003e deliver a corrosion-resistant system suited to all UK water quality conditions, including hard-water and chloride-rich supplies, for long-term reliability.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e🔧 Low Maintenance — All Connections on Top\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003e\u003cstrong\u003eAll DHW and primary circuit connections are on top\u003c\/strong\u003e. Primary circuit uses 22 mm compression connections. Maintenance requires only a \u003cstrong\u003e6-monthly water level top-up\u003c\/strong\u003e; a central heating filter on the primary circuit is recommended to protect coil components long-term.\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 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eTechnical Specifications\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:28px;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;width:50%;\"\u003eModel Code\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eHS210EPLUS\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eStorage Volume\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e202 litres (nominal)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eDimensions (L × W × H)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e520 × 520 × 1,650 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eEmpty Weight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e48 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFilled Weight\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e250 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eErP Energy Rating\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eStanding Heat Loss\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e1.24 kWh\/24h\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eImmersion Heaters\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eDual element: 3 kW (short\/boost) + 3 kW (long)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHeat-Up via Primary Coil (15–60°C at 15 l\/min)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e24 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFull Heat-Up via Long Immersion (15–60°C)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e210 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eFull Heat-Up via Both Immersions (15–60°C)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e105 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eBoost Reheat (45–60°C, short element)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e20 minutes (50 litres)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHot Water at 15 l\/min (60°C store)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e188 litres (no reheat)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eHot Water at 15 l\/min (70°C store)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e281 litres\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eDHW Coil Max Operating Pressure\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e3 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Max Operating Pressure\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e14 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Pressure Drop at 15 l\/min\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e134 mbar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Connections\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e22 mm compression\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePrimary Coil Thermostat (pre-set \/ range)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e65°C pre-set \/ adjustable 45–75°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eMax Storage Temperature\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e85°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003ePipe Connections (DHW)\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003e22 mm (all on top)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eOverfill Connection\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eG ¾\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eCompatible Heat Sources\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eGas boiler, oil boiler, LPG, district heating, heat pump\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eOuter Tank Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003ePolyethylene\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eInner Tank Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003ePolypropylene\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eCoil Material\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eStainless steel corrugated\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;font-weight:600;\"\u003eMPN\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 14px;border:1px solid #c8e6e3;\"\u003eHS210EPLUS\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- Amber warning callout --\u003e\n\u003cdiv style=\"background:#fff8e1;border-left:4px solid #f59e0b;padding:14px 18px;border-radius:6px;margin-bottom:28px;\"\u003e\n  \u003cstrong style=\"color:#92400e;\"\u003eFloor Loading \u0026amp; Primary Circuit Note:\u003c\/strong\u003e When filled, the HS210EPLUS weighs \u003cstrong\u003e250 kg\u003c\/strong\u003e — ensure the installation floor is rated for this load. The primary heat supply circuit must be \u003cstrong\u003efully pumped\u003c\/strong\u003e; gravity circulation is not suitable. Fit a \u003cstrong\u003ecentral heating filter\u003c\/strong\u003e on the primary circuit to protect the internal coil. Isolate power before removing protective covers.\n\u003c\/div\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px;margin-bottom:18px;\"\u003e\n  \u003cstrong style=\"font-size:16px;\"\u003eFrequently Asked Questions\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eHow much usable hot water does the HS210EPLUS deliver?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    At a draw-off rate of 15 l\/min with a store temperature of 70°C, the HS210EPLUS delivers \u003cstrong\u003e281 litres of usable blended hot water\u003c\/strong\u003e without reheating. At 60°C store temperature this is \u003cstrong\u003e188 litres\u003c\/strong\u003e. The short boost element adds a further 50 litres within 20 minutes when needed.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eIs the HeatStream 210 Indirect suitable for a district heating connection?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    Yes — this is one of its most distinctive capabilities. The \u003cstrong\u003eprimary coil is rated to 14 bar\u003c\/strong\u003e, well above typical district heating network pressures, and the 134 mbar pressure drop at 15 l\/min is compatible with standard district heating heat interface units (HIUs). The unit is WRAS-compliant for potable hot water production.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eCan the HS210EPLUS charge from solar PV as well as a boiler?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    Yes. The \u003cstrong\u003eimmersion heaters operate completely independently\u003c\/strong\u003e of the primary coil. You can schedule the immersion heaters to charge the store using solar PV surplus or off-peak electricity, while the boiler primary coil provides top-up heat during peak demand periods — maximising efficiency from all available energy sources.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the difference between the HS210EPLUS and HS150EPLUS?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    Both models share the same 520 × 520 mm footprint and primary coil specification. The HS210EPLUS is \u003cstrong\u003e335 mm taller\u003c\/strong\u003e (1,650 mm vs 1,315 mm), stores \u003cstrong\u003e202 litres\u003c\/strong\u003e vs 152 litres, delivers \u003cstrong\u003e281 litres at 70°C\u003c\/strong\u003e vs 180 litres, has a slightly higher primary coil pressure drop (134 mbar vs 107 mbar) and weighs 250 kg filled vs 191 kg. It is the right choice for larger households or higher hot water demand.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the HS210EPLUS need an annual service?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    No mandatory annual safety inspection is required. The recommended maintenance is a \u003cstrong\u003e6-monthly water level top-up\u003c\/strong\u003e via the filling loop. Additionally, it is good practice to check the primary circuit filter periodically and flush the system if water quality deteriorates.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;overflow:hidden;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat flow rate does the mains supply need to deliver?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f0faf9;\"\u003e\n    For optimum performance, the incoming mains supply should achieve a minimum of \u003cstrong\u003e12 l\/min at 1 bar dynamic pressure\u003c\/strong\u003e. If this cannot be achieved, a cold-water booster set should be installed. Mains supply pressure must not exceed \u003cstrong\u003e3 bar\u003c\/strong\u003e without a pressure reducing valve upstream of the tank.\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Harlequin","offers":[{"title":"Default Title","offer_id":64634151076189,"sku":"HS210EPLUS","price":1700.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HarlequinHeatStreamElectricThermalStoreDirect.webp?v=1778090532"},{"product_id":"jab-tsc-150l-direct-e7-man-fill-thermal-store-cylinder","title":"JAB TSC 150L Direct E7 Man-Fill Thermal Store Cylinder","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eJAB TSC 150L Direct E7 Man-Fill\u003c\/strong\u003e is a \u003cstrong\u003edirect electric open-vented thermal store\u003c\/strong\u003e designed to deliver \u003cstrong\u003emains-pressure hot water using Economy 7 or off-peak electricity\u003c\/strong\u003e, specifically engineered for \u003cstrong\u003enew-build apartments\u003c\/strong\u003e and other buildings where routing an unvented cylinder discharge pipe is impractical or prohibited. As a \u003cstrong\u003ethermal store\u003c\/strong\u003e, the primary water vessel operates at atmospheric pressure — eliminating the need for a temperature and pressure relief valve, discharge pipework, or Part G G3 annual maintenance. The 150-litre store charges overnight during cheap-rate hours, with mains-pressure hot water delivered via an \u003cstrong\u003einternal heat exchanger coil\u003c\/strong\u003e. The \u003cstrong\u003eMan-Fill configuration\u003c\/strong\u003e means the store is filled via a dedicated fill point, keeping the primary circuit separate from the domestic cold mains. \u003cstrong\u003eHWA specification compliant\u003c\/strong\u003e and \u003cstrong\u003ePart L1A approved\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e150 L\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eStore volume\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eE7\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eOff-peak electric\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eNo G3\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eNo annual maintenance\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eNo T\u0026amp;P\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eNo discharge pipe needed\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eHWA\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eSpec compliant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;padding:14px 16px;border-radius:6px;margin:16px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eApartment-compliant solution:\u003c\/strong\u003e Building Regulations Part G prohibits connecting a discharge pipe from an unvented cylinder into a soil stack. The JAB TSC thermal store operates at atmospheric pressure and \u003cstrong\u003erequires no discharge pipe at all\u003c\/strong\u003e — making it the correct and compliant solution for new-build apartment installations.\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#fffbea;border-left:4px solid #e6a817;padding:14px 16px;border-radius:6px;margin:16px 0;\"\u003e\n  \u003cstrong style=\"color:#b07d00;\"\u003eElectrical connection:\u003c\/strong\u003e The immersion heater circuit must be wired by a \u003cstrong\u003ePart P competent electrician\u003c\/strong\u003e. The E7 immersion requires a \u003cstrong\u003ededicated Economy 7 supply\u003c\/strong\u003e with appropriate time-switching to the off-peak rate — confirm with the property's electrical supply arrangements before ordering.\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 18px;border-radius:6px;margin:28px 0 16px;font-size:17px;font-weight:700;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:24px;\"\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eOpen Vented Thermal Store — No G3 Discharge Pipe Required\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe JAB TSC operates as an \u003cstrong\u003eopen vented thermal store at atmospheric pressure\u003c\/strong\u003e. Unlike unvented cylinders, it does \u003cstrong\u003enot require a temperature and pressure relief valve or a discharge pipe\u003c\/strong\u003e. This directly solves a common installation problem in apartment buildings where Building Regulations Part G prohibits routing a discharge pipe into a soil stack — making the JAB TSC the compliant solution where an unvented cylinder cannot legally be installed.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eMains-Pressure Hot Water via Internal Coil\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe mains cold water supply passes through an \u003cstrong\u003einternal heat exchanger coil\u003c\/strong\u003e inside the primary store. The store water is heated by the immersion heater and transfers heat across the coil to the incoming cold, delivering \u003cstrong\u003efast-flowing mains-pressure hot water\u003c\/strong\u003e to taps and showers — with no pump required and no pressure losses typical of gravity-fed systems.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eEconomy 7 \/ Off-Peak Electric Optimised\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe JAB TSC is \u003cstrong\u003especifically designed for Economy 7 and off-peak electricity tariffs\u003c\/strong\u003e. The large store volume (150 L, 180 L or 210 L) is heated overnight during cheap-rate hours and holds sufficient hot energy for an entire day's domestic use. This makes it the natural choice for \u003cstrong\u003enew-build apartments without a gas connection\u003c\/strong\u003e where electricity tariff optimisation reduces running costs.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eScale-Free Primary Water — No Annual Maintenance\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe immersion elements are \u003cstrong\u003epermanently immersed in the same primary (store) water\u003c\/strong\u003e, which is never renewed. Since this water is not replaced, \u003cstrong\u003eno scaling of the elements occurs\u003c\/strong\u003e — even in hard water areas. JAB thermal stores therefore \u003cstrong\u003edo not require the annual maintenance\u003c\/strong\u003e that unvented cylinders demand under Building Regulations, reducing whole-life running costs.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eManual Fill (Man-Fill) Configuration\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe Man-Fill (manual fill) configuration means the primary store is \u003cstrong\u003efilled manually via a fill point\u003c\/strong\u003e rather than being permanently connected to the mains cold supply for the store. This simplifies the installation pipework and is the preferred configuration for new-build apartments where the store circuit is kept isolated from the domestic mains. The mains connection is only made to the heat exchanger coil serving the hot water outlets.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eHWA Compliant — Part L1A Approved\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe JAB TSC range \u003cstrong\u003efully complies with the HWA (Hot Water Association) specification for thermal stores\u003c\/strong\u003e and meets \u003cstrong\u003ePart L1A Building Regulations\u003c\/strong\u003e for both new build and refurbishment. JAB's innovative design ensures installation and ongoing maintenance are straightforward — the installer-friendly layout reduces commissioning time on site.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 18px;border-radius:6px;margin:28px 0 16px;font-size:17px;font-weight:700;\"\u003eTechnical Specifications — JAB TSC 150L Direct E7 Man-Fill\u003c\/div\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;margin-bottom:24px;\"\u003e\n  \u003cthead\u003e\u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eStore volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e150 L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eHeating type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eDirect electric — Economy 7 \/ off-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eFill configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eManual fill (Man-Fill)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eStore operating pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eAtmospheric (open vented)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eHot water pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eMains pressure (via internal heat exchanger coil)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eT\u0026amp;P relief valve required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eDischarge pipe required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eAnnual G3 maintenance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eRegulatory compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eHWA Thermal Store Specification; Part L1A (new build and refurbishment)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eScale risk on elements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eMinimal — primary water not renewed\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eInstaller qualification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCompetent plumber + Part P electrician for wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 18px;border-radius:6px;margin:28px 0 16px;font-size:17px;font-weight:700;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the difference between a thermal store and an unvented cylinder?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eAn \u003cstrong\u003eunvented cylinder\u003c\/strong\u003e stores domestic hot water under mains pressure — it requires a T\u0026amp;P relief valve and a discharge pipe routed to a safe termination point. A \u003cstrong\u003ethermal store\u003c\/strong\u003e (like the JAB TSC) stores heated \u003cstrong\u003eprimary water at atmospheric pressure\u003c\/strong\u003e in an open-vented configuration. The mains cold water passes through a heat exchanger coil and picks up heat — it never enters the store. This means \u003cstrong\u003eno T\u0026amp;P valve and no discharge pipe are required\u003c\/strong\u003e, which is critical in apartment buildings where discharge pipe routing is prohibited by Part G.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the JAB TSC need a qualified installer?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eAs an \u003cstrong\u003eopen-vented thermal store\u003c\/strong\u003e, the JAB TSC does not fall under the Part G G3 unvented regulations — it does not need a G3-qualified installer. However, installation must still be carried out by a \u003cstrong\u003ecompetent plumber\u003c\/strong\u003e in accordance with the installation manual and Building Regulations Part L1A. Electrical connections to the immersion heaters must be made by a \u003cstrong\u003ePart P competent electrician\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the JAB thermal store need annual servicing like an unvented cylinder?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eNo — \u003cstrong\u003eJAB thermal stores do not require the annual maintenance\u003c\/strong\u003e prescribed for unvented cylinders under Building Regulations. The primary store water is never replaced, so no scale builds up on the immersion elements. There is no T\u0026amp;P valve or expansion relief valve to test annually. Periodic inspection of the heat exchanger connections and blend valve is advisable, but this is not the same annual regulatory requirement that applies to G3 unvented systems.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eCan the JAB TSC be used in a hard water area?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eYes — the JAB thermal store has a natural advantage in hard water areas. Because the \u003cstrong\u003eprimary store water is never renewed\u003c\/strong\u003e, it can only deposit scale once when first heated. Subsequent heating cycles use the same softened (de-gassed) water, so the immersion elements \u003cstrong\u003edo not accumulate scale over time\u003c\/strong\u003e. Limescale may form in the heat exchanger coil over time if mains water is very hard, but this occurs far more slowly than in a direct cylinder.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat tariff should the JAB TSC be used with?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe JAB TSC is optimised for \u003cstrong\u003eEconomy 7, Economy 10, or any time-of-use tariff\u003c\/strong\u003e with a defined cheap-rate overnight window. The large store volume is heated during cheap-rate hours and retains sufficient stored heat for the following day's use without requiring daytime top-up in most households. Time switches or smart immersion controllers can be used to control which hours the immersion heater operates.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"JAB","offers":[{"title":"Default Title","offer_id":64644856316253,"sku":"TSC150","price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/JABTSCDirectE7Man-FillThermalStoreCylinder.webp?v=1778257522"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/collections\/thermal-stores-water-heaters.jpg?v=1778138587","url":"https:\/\/qualityheating.co.uk\/collections\/thermal-stores.oembed","provider":"AIZO Quality Heating","version":"1.0","type":"link"}