{"product_id":"baxi-625-heat-only-boiler-25kw","title":"Baxi 625 Heat Only Boiler 25kW","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\n\u003cp\u003eThe \u003cstrong\u003eBaxi 625 Heat Only Boiler\u003c\/strong\u003e is a \u003cstrong\u003e25kW wall-mounted gas condensing conventional boiler\u003c\/strong\u003e from the highly regarded Baxi 600 series. Carrying a \u003cstrong\u003e7-year parts and labour warranty\u003c\/strong\u003e and achieving \u003cstrong\u003eErP class A space heating efficiency at 93%\u003c\/strong\u003e, it is designed for larger homes with high central heating demands. Suitable for both fully-pumped \u003cstrong\u003eopen-vent and sealed systems\u003c\/strong\u003e, and requiring \u003cstrong\u003eno pump overrun or permanent live\u003c\/strong\u003e, it is one of the most installer-friendly conventional boilers on the market.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;background:#e6f4f3;border:1px solid #c8e6e3;border-radius:6px;margin:20px 0;\"\u003e\n\u003cdiv style=\"text-align:center;flex:1;min-width:130px;padding:12px 8px;\"\u003e\n  \u003cdiv style=\"font-size:1.7em;font-weight:700;color:#005c54;\"\u003e25 kW\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.82em;color:#555;margin-top:2px;\"\u003eHeat output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;flex:1;min-width:130px;padding:12px 8px;\"\u003e\n  \u003cdiv style=\"font-size:1.7em;font-weight:700;color:#005c54;\"\u003e93%\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.82em;color:#555;margin-top:2px;\"\u003eErP efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;flex:1;min-width:130px;padding:12px 8px;\"\u003e\n  \u003cdiv style=\"font-size:1.7em;font-weight:700;color:#005c54;\"\u003e7-Year\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.82em;color:#555;margin-top:2px;\"\u003eParts \u0026amp; labour warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;flex:1;min-width:130px;padding:12px 8px;\"\u003e\n  \u003cdiv style=\"font-size:1.7em;font-weight:700;color:#005c54;\"\u003e17.4 kg\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.82em;color:#555;margin-top:2px;\"\u003eInstaller lift weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;flex:1;min-width:130px;padding:12px 8px;\"\u003e\n  \u003cdiv style=\"font-size:1.7em;font-weight:700;color:#005c54;\"\u003eErP A\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.82em;color:#555;margin-top:2px;\"\u003eSpace heating class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#fff0f0;border-left:4px solid #cc0000;padding:12px 16px;margin:16px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cstrong\u003e⚠ Installer notice:\u003c\/strong\u003e Installation must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in line with current Gas Safety (Installation \u0026amp; Use) Regulations. The Benchmark Commissioning Checklist must be completed and handed to the user upon commissioning.\u003c\/div\u003e\n\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;padding:12px 16px;margin:16px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cstrong\u003eℹ System flexibility:\u003c\/strong\u003e The Baxi 625 is compatible with both open-vent and sealed heating systems, making it a versatile choice for both replacement and new-build projects. No permanent live is required, simplifying the wiring process on site.\u003c\/div\u003e\n\n\u003cp style=\"background:#008377CF;color:#fff;font-weight:700;font-size:1.05em;padding:10px 16px;margin:28px 0 0 0;border-radius:4px 4px 0 0;\"\u003eKey Features\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:14px;margin:10px 0 20px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e25 kW Output — Ideal for Larger Homes\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eWith a maximum output of \u003cstrong\u003e25kW\u003c\/strong\u003e and a minimum of 7.5kW, the 625 is well-suited to larger properties with 15+ radiators. Proportional modulation prevents short-cycling and maintains consistent room temperatures.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e93% ErP Efficiency — Class A Rated\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eAchieving \u003cstrong\u003e93% Boiler Plus ErP efficiency\u003c\/strong\u003e and SEDBUK 89.1%, the 625 qualifies as an ErP Class A space heating appliance. Condensing operation extracts additional heat from flue gases to maximise fuel economy.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e7-Year Parts \u0026amp; Labour Warranty\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eRegistered through Baxi after installation by a Gas Safe engineer, the 625 is covered by a \u003cstrong\u003efull 7-year parts and labour warranty\u003c\/strong\u003e — protecting homeowners and reducing installer liability.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003eNo Pump Overrun \u0026amp; No Permanent Live\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eThe Baxi 625 requires \u003cstrong\u003eno pump overrun and no permanent live supply\u003c\/strong\u003e. Installation is simpler and faster compared to boilers that need additional wiring, reducing both time on site and disruption to the household.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003e17.4 kg Installer Lift Weight\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eAt only \u003cstrong\u003e17.4 kg\u003c\/strong\u003e, the 625 is straightforward to single-hand lift onto the wall bracket — despite delivering 25kW of output. Its 370 × 625 × 270mm footprint allows cupboard siting with just 5mm side clearance.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003eQuick \u0026amp; Easy Servicing\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eFront and side access panels allow full servicing access \u003cstrong\u003ewithout special tools\u003c\/strong\u003e. The easy-fit wall bracket features a \u003cstrong\u003epositive fix with an audible locking click\u003c\/strong\u003e to confirm secure installation.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003eFlexible Concentric Flue System\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eThe included telescopic \u003cstrong\u003e60\/100mm concentric flue\u003c\/strong\u003e (315–500mm) suits the majority of installations. Top or optional in-case rear flue exit is supported, with a maximum equivalent run of \u003cstrong\u003e6 metres\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:250px;\"\u003e\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:16px;margin:0;\"\u003e\n  \u003cdiv style=\"font-weight:700;color:#005c54;margin-bottom:6px;\"\u003eOpenTherm Ready \u0026amp; Hydrogen Blend Certified\u003c\/div\u003e\n  \u003cdiv style=\"font-size:0.92em;color:#333;\"\u003eCompatible with \u003cstrong\u003eCertified OpenTherm controls\u003c\/strong\u003e for weather-compensating modulation and Boiler Plus compliance. The 625 is also certified to run on an \u003cstrong\u003e80\/20 natural gas\/hydrogen blend\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"background:#008377CF;color:#fff;font-weight:700;font-size:1.05em;padding:10px 16px;margin:28px 0 0 0;border-radius:4px 4px 0 0;\"\u003eTechnical Specification\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 24px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eMPN \/ Product Code\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e7712022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003eBaxi 625 Heat Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eSeries\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003eBaxi 600 Heat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eHeat output (max)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e25 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eHeat output (min)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e7.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eHeat input – max gross (QnHs)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e28.62 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eHeat input – min gross (QnHs)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e8.59 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eErP space heating efficiency\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e93% (Class A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eSEDBUK 2009 efficiency\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e89.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eNOx class \/ NOx\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003eClass 6 \/ 24 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eSound power level (LWA)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e45 dB(A) indoors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eGas supply connection\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eInlet supply pressure (natural gas)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e20 mbar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eMaximum gas rate\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e2.73 m³\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eElectrical supply\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003ePower consumption\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e33 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003ePermanent live required\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003ePump overrun required\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eExternal fuse rating\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eIP rating\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003eIPX4D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eFlue type\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e60\/100mm concentric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eStandard flue length\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e315–500mm telescopic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eMax equivalent flue length\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e6 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eFlow \/ return pipe size\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eCondensate pipe size\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e21.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eCompartment ventilation required\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eBoiler width × height × depth\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e370 × 625 × 270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eInstaller lift weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003e17.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eGross packaged weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e19.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eSystem compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#fff;border-bottom:1px solid #dff0ee;\"\u003eFully-pumped open-vent or sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;font-weight:600;width:55%;border-bottom:1px solid #dff0ee;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;background:#f0faf9;border-bottom:1px solid #dff0ee;\"\u003e7-year parts \u0026amp; labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp style=\"background:#008377CF;color:#fff;font-weight:700;font-size:1.05em;padding:10px 16px;margin:28px 0 0 0;border-radius:4px 4px 0 0;\"\u003eFrequently Asked Questions\u003c\/p\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 size home is the Baxi 625 suitable for?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#fff;font-size:0.93em;\"\u003eThe 625's \u003cstrong\u003e25kW output\u003c\/strong\u003e suits larger homes, typically with 15 or more radiators, or properties with high heat-loss. Paired with a well-sized indirect cylinder, it provides reliable central heating for multi-bathroom family homes.\u003c\/div\u003e\n\u003c\/details\u003e\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 Baxi 625 require a pump overrun circuit?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#fff;font-size:0.93em;\"\u003eNo. The Baxi 625 is engineered to operate \u003cstrong\u003ewithout a pump overrun or permanent live\u003c\/strong\u003e. Only a switched live is needed. This reduces wiring complexity and makes it a fast, straightforward replacement for older conventional boilers.\u003c\/div\u003e\n\u003c\/details\u003e\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 it be fitted inside a kitchen cupboard?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#fff;font-size:0.93em;\"\u003eYes. With a \u003cstrong\u003e5mm minimum side clearance\u003c\/strong\u003e and a depth of 270mm, the 625 fits inside a standard kitchen cupboard with ease. The optional in-case rear flue helps achieve a neat concealed installation. No compartment ventilation is needed.\u003c\/div\u003e\n\u003c\/details\u003e\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 Baxi 625 compatible with OpenTherm controls?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#fff;font-size:0.93em;\"\u003eYes. The boiler supports \u003cstrong\u003eCertified OpenTherm technology\u003c\/strong\u003e, enabling it to be paired with controls such as the Baxi uSense 2. This allows proportional modulation based on outdoor conditions, reducing seasonal energy consumption.\u003c\/div\u003e\n\u003c\/details\u003e\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 warranty is included?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#fff;font-size:0.93em;\"\u003eThe Baxi 625 comes with a \u003cstrong\u003e7-year parts and labour warranty\u003c\/strong\u003e when installed and registered by a Gas Safe engineer. Benchmark Commissioning documentation must be completed to maintain warranty validity.\u003c\/div\u003e\n\u003c\/details\u003e\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 Baxi 625 hydrogen blend compatible?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#fff;font-size:0.93em;\"\u003eYes. Baxi has certified the 625 for use with an \u003cstrong\u003e80\/20 natural gas\/hydrogen blend\u003c\/strong\u003e, meaning the boiler is ready for the planned transition to lower-carbon gas supplies without requiring modification.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:14px 18px;border-radius:6px;margin-top:28px;font-size:0.9em;\"\u003e\n\u003cstrong\u003eRelated Products:\u003c\/strong\u003e \u003ca href=\"\/products\/baxi-619-heat-only-boiler\" style=\"color:#fff;text-decoration:underline;\"\u003eBaxi 619 Heat Only (19kW)\u003c\/a\u003e  |  \u003ca href=\"\/products\/baxi-816-heat-only-boiler\" style=\"color:#fff;text-decoration:underline;\"\u003eBaxi 816 Heat Only + MagnaClean\u003c\/a\u003e  |  \u003ca href=\"\/products\/baxi-830-heat-only-boiler\" style=\"color:#fff;text-decoration:underline;\"\u003eBaxi 830 Heat Only + MagnaClean\u003c\/a\u003e  |  \u003ca href=\"\/products\/baxi-usense-2\" style=\"color:#fff;text-decoration:underline;\"\u003eBaxi uSense 2 Smart Thermostat\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"Default Title","offer_id":64578524971357,"sku":"7712022","price":1530.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Baxi600seriesHeatOnlyBoilerERPRating.jpg?v=1777645797","url":"https:\/\/qualityheating.co.uk\/products\/baxi-625-heat-only-boiler-25kw","provider":"AIZO Quality Heating","version":"1.0","type":"link"}