{"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","url":"https:\/\/qualityheating.co.uk\/products\/harlequin-heatstream-210-direct-electric-thermal-store","provider":"AIZO Quality Heating","version":"1.0","type":"link"}