{"product_id":"baxi-600-combi-2-gas-combi-boiler-624-630-636-7796586-7796587-7796588","title":"Baxi 600 Combi 2 Gas Combi Boiler - 624 \/ 630 \/ 636 (7796586 \/ 7796587 \/ 7796588)","description":"\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; font-family: Arial,Helvetica,sans-serif; color: #222; line-height: 1.6;\"\u003e\n\u003cp style=\"margin: 0 0 18px 0;\"\u003eThe \u003cstrong\u003eBaxi 600 Combi 2\u003c\/strong\u003e is a \u003cstrong\u003ewall-hung condensing gas combination boiler\u003c\/strong\u003e available in three outputs — \u003cstrong\u003e24 kW (624), 30 kW (630), and 36 kW (636)\u003c\/strong\u003e — delivering \u003cstrong\u003ecentral heating and instant mains-pressure hot water in a single compact unit\u003c\/strong\u003e. No separate cylinder, no cold water tank, no loft header tank — just one wall-mounted boiler that fits neatly inside a standard kitchen or utility cupboard. An \u003cstrong\u003eErP A-rating, 93% seasonal efficiency\u003c\/strong\u003e, \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e, and \u003cstrong\u003eseven-year parts and labour warranty\u003c\/strong\u003e make the 600 Combi 2 an ideal mid-range choice for homes with up to two bathrooms. Every model ships with an \u003cstrong\u003eEasyFill permanent filling link\u003c\/strong\u003e included in the box.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eSeasonal Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eErP A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; 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: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003e7 Year\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eStainless\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eSteel Heat Exchanger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eH₂-Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eUp to 20% Hydrogen\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff5f5; border-left: 5px solid #cc0000; padding: 14px 18px; border-radius: 4px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #cc0000;\"\u003eGas Safe Registration Required\u003c\/strong\u003e — Installation, commissioning, LPG conversion, and all maintenance must be performed by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in line with current Building Regulations and the Benchmark Commissioning Checklist.\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 5px solid #008377; padding: 14px 18px; border-radius: 4px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #005c54;\"\u003eCombi Boiler — No Cylinder Needed\u003c\/strong\u003e — The 600 Combi 2 heats water directly from the mains on demand. \u003cstrong\u003eNo separate hot water cylinder, cold water storage tank, or loft header tank is required\u003c\/strong\u003e, saving space and simplifying the installation.\u003c\/div\u003e\n\u003cdiv style=\"background: #fffbea; border-left: 5px solid #e6a817; padding: 14px 18px; border-radius: 4px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #b07d00;\"\u003eChoosing the Right Output\u003c\/strong\u003e — The \u003cstrong\u003e624 (24 kW)\u003c\/strong\u003e suits single-bathroom homes comfortably. The \u003cstrong\u003e630 (30 kW)\u003c\/strong\u003e and \u003cstrong\u003e636 (36 kW)\u003c\/strong\u003e can manage one to two bathrooms with higher hot water flow rates; the 636 is recommended where simultaneous shower demand is a regular requirement. All three share identical dimensions and installation footprint.\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 16px; margin: 0 0 28px 0;\"\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eAll-in-One Combi — No Cylinder or Tank\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAs a \u003cstrong\u003ecombination boiler\u003c\/strong\u003e, the 600 Combi 2 provides both \u003cstrong\u003ecentral heating and on-demand mains-pressure hot water\u003c\/strong\u003e without needing a separate hot water storage cylinder, cold water storage tank, or loft header tank. This frees up valuable airing cupboard and loft space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eStainless Steel Heat Exchanger\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e offers superior corrosion and scale resistance compared to aluminium alternatives, extending the operational life of the boiler and supporting the 7-year warranty commitment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003e93% Seasonal Efficiency — ErP A-Rated\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAll three models achieve \u003cstrong\u003e93% seasonal efficiency\u003c\/strong\u003e and hold an \u003cstrong\u003eErP A-rating\u003c\/strong\u003e, meeting EU Energy-related Products Directive standards and delivering meaningfully lower running costs compared to older G-rated boilers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003ePre-Heated Siphonic Condensate Trap\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003epre-heated siphonic condensate trap\u003c\/strong\u003e discharges warmed condensate all at once rather than in slow trickles, significantly reducing the risk of frozen condensate pipes in cold weather and the associated loss of heating and hot water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eNatural Gas \u0026amp; LPG — No Conversion Kit\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAll models convert between \u003cstrong\u003enatural gas (G20) and LPG (G31)\u003c\/strong\u003e via a simple gas valve adjustment by a Gas Safe engineer. No additional accessory kit purchase is required, making the 600 Combi 2 suitable for off-grid properties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eEasyFill Permanent Filling Link Included\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003eEasyFill permanent filling link\u003c\/strong\u003e is included in the box, allowing homeowners to top up system pressure themselves quickly and cleanly without a temporary hose or engineer visit, reducing unnecessary callouts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eSmart Control Ready — OpenTherm \u0026amp; uSense\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe 600 Combi 2 supports \u003cstrong\u003eOpenTherm modulating communication\u003c\/strong\u003e, enabling compatible thermostats (Nest, Hive, and other OT devices) to modulate boiler output rather than simply cycling on and off. The optional \u003cstrong\u003eBaxi uSense Wi-Fi thermostat\u003c\/strong\u003e adds smartphone scheduling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eCompact \u0026amp; Cupboard-Friendly\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAt \u003cstrong\u003e700 mm H × 390 mm W × 285 mm D\u003c\/strong\u003e the 600 Combi 2 is designed to slot into a standard 290 mm-deep kitchen cupboard, keeping the boiler discreet and the kitchen uncluttered.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eHydrogen-Blend Ready\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eCertified for operation on \u003cstrong\u003enatural gas blended with up to 20% hydrogen (H₂)\u003c\/strong\u003e, ensuring the boiler is ready for planned UK gas grid decarbonisation changes without any hardware modifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; border-radius: 6px 6px 0 0; font-size: 15px; margin-top: 8px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 28px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #005c54; color: #fff;\"\u003e\n\u003cth style=\"padding: 10px 12px; text-align: left; width: 36%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: center;\"\u003e624 Combi 2\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: center;\"\u003e630 Combi 2\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: center;\"\u003e636 Combi 2\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eBaxi Part Number (MPN)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7796586\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7796587\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7796588\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eDHW Output (kW)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e24 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e30 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e36 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eCH Max Output (condensing)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e~21 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e~21 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e~25 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eWall-hung condensing gas combination boiler\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eSeasonal Efficiency\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e93%\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e93%\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e93%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eErP Energy Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eA\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eA\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eHeat Exchanger\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eStainless steel\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eStainless steel\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eGas Type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNG (G20) \/ LPG (G31)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNG (G20) \/ LPG (G31)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNG (G20) \/ LPG (G31)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eHydrogen Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eUp to 20% H₂\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eUp to 20% H₂\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eUp to 20% H₂\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eCH Flow Temp Range\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e25–80 °C\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e25–80 °C\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e25–80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eElectrical Supply\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e700 × 390 × 285 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e700 × 390 × 285 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e700 × 390 × 285 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eMin Cupboard Depth\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e290 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e290 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e290 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eFilling System\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eEasyFill permanent filling link (included)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eEasyFill permanent filling link (included)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eEasyFill permanent filling link (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eOpenTherm; Baxi uSense (optional)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eOpenTherm; Baxi uSense (optional)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eOpenTherm; Baxi uSense (optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7 years P\u0026amp;L\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7 years P\u0026amp;L\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7 years P\u0026amp;L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; border-radius: 6px 6px 0 0; font-size: 15px; margin-top: 8px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #c8e6e3; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 28px;\"\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\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 624, 630, and 636 Combi 2?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eThe key difference is \u003cstrong\u003edomestic hot water output\u003c\/strong\u003e: the 624 delivers \u003cstrong\u003e24 kW DHW\u003c\/strong\u003e, the 630 delivers \u003cstrong\u003e30 kW\u003c\/strong\u003e, and the 636 delivers \u003cstrong\u003e36 kW\u003c\/strong\u003e. The 624 suits single-bathroom homes comfortably; the 630 and 636 handle one to two bathrooms with progressively higher flow rates. All three models share the same ErP A-rating, 93% efficiency, stainless steel heat exchanger, and 7-year warranty.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eDoes the Baxi 600 Combi 2 need a separate hot water cylinder?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eNo. As a \u003cstrong\u003ecombi boiler\u003c\/strong\u003e, the 600 Combi 2 heats water directly from the mains on demand, so \u003cstrong\u003eno separate cylinder, cold water storage tank, or loft header tank is needed\u003c\/strong\u003e. This makes it ideal for homes where space is at a premium. If your home has two or more bathrooms with simultaneous hot water demand, a system boiler paired with a cylinder may be more appropriate.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eCan the 600 Combi 2 be converted to LPG?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eYes. All three models can be \u003cstrong\u003emanually converted between natural gas (G20) and LPG (G31)\u003c\/strong\u003e by a Gas Safe registered engineer via the gas valve settings. No additional accessory kit needs to be purchased, making this a cost-effective option for off-grid properties.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eIs a filling loop included with the 600 Combi 2?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eYes. Every 600 Combi 2 ships with an \u003cstrong\u003eEasyFill permanent filling link\u003c\/strong\u003e included in the box. This allows the homeowner to top up system pressure themselves without needing a temporary hose connection or a callout.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat smart thermostats work with the Baxi 600 Combi 2?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eThe 600 Combi 2 supports \u003cstrong\u003eOpenTherm (OT) modulating communication\u003c\/strong\u003e, making it compatible with popular smart thermostats including \u003cstrong\u003eNest, Hive, and any other OpenTherm-certified device\u003c\/strong\u003e. OpenTherm allows the thermostat to continuously adjust boiler output rather than simply switching it on and off, improving efficiency. The optional \u003cstrong\u003eBaxi uSense Wi-Fi thermostat\u003c\/strong\u003e is also available as a Baxi-branded smart control solution.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"24kW","offer_id":64693660942685,"sku":"7796586","price":1095.0,"currency_code":"GBP","in_stock":true},{"title":"30kW","offer_id":64693660975453,"sku":"7796587","price":1195.0,"currency_code":"GBP","in_stock":true},{"title":"36kW","offer_id":64693660909917,"sku":"7796588","price":1395.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Baxi600SystemGasBoiler.webp?v=1778770722","url":"https:\/\/qualityheating.co.uk\/products\/baxi-600-combi-2-gas-combi-boiler-624-630-636-7796586-7796587-7796588","provider":"AIZO Quality Heating","version":"1.0","type":"link"}