{"product_id":"baxi-430-heat-only-boiler-30kw","title":"Baxi 430 Heat Only Boiler 30kW","description":"\u003cdiv style=\"font-size:16px; max-width:900px; font-family:Arial, Helvetica, sans-serif; color:#2B2B2B; line-height:1.6;\"\u003e\n\u003cp style=\"margin:0 0 20px 0; line-height:1.6; color:#2B2B2B;\"\u003eThe \u003cstrong\u003eBaxi 430 Heat Only\u003c\/strong\u003e is a 30kW regular (open vent) gas boiler designed for central heating in conjunction with a separate hot water cylinder and feed \u0026amp; expansion tank. Its \u003cstrong\u003elightweight, compact casing\u003c\/strong\u003e fits discreetly into a standard airing cupboard, and with \u003cstrong\u003eno pump overrun required\u003c\/strong\u003e, it is a straightforward like-for-like replacement for ageing open vent systems. Backed by a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e, it delivers reliable heat-only performance for traditional heating layouts.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px; color:#FFFFFF;\"\u003e30kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#E7F5F3; margin-top:4px; line-height:1.3;\"\u003eMax Heat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px; color:#FFFFFF;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#E7F5F3; margin-top:4px; line-height:1.3;\"\u003eSeasonal Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px; color:#FFFFFF;\"\u003eA Rated\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#E7F5F3; margin-top:4px; line-height:1.3;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px; color:#FFFFFF;\"\u003e7.5kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#E7F5F3; margin-top:4px; line-height:1.3;\"\u003eMin Heat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px; color:#FFFFFF;\"\u003e5 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#E7F5F3; margin-top:4px; line-height:1.3;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px; color:#FFFFFF;\"\u003e625mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#E7F5F3; margin-top:4px; line-height:1.3;\"\u003eBoiler Height\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #C0392B; background:#FDEDEB; border-radius:6px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#9B2C1F; margin-bottom:6px; font-size:14px;\"\u003eInstallation must be by a Gas Safe registered engineer\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eThis appliance must be installed, commissioned and serviced only by a Gas Safe registered engineer, in accordance with Building Regulations and the manufacturer's Installation and Service Manual. A Benchmark Commissioning Checklist must be completed on installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #B7791F; background:#FEF6E7; border-radius:6px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#8A5A10; margin-bottom:6px; font-size:14px;\"\u003eRequires a separate hot water cylinder and F\u0026amp;E tank\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eAs a heat-only (regular\/open vent) boiler, this unit provides central heating only. A compatible hot water storage cylinder and feed \u0026amp; expansion tank must be specified and installed alongside it — hot water is not supplied directly by the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #008377CF; background:#EAF6F4; border-radius:6px; padding:14px 16px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#00594F; margin-bottom:6px; font-size:14px;\"\u003eNo pump overrun, no permanent live required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eBecause the Baxi 430 Heat Only has \u003cstrong\u003eno pump overrun function\u003c\/strong\u003e and does not require a permanent live electrical supply, it can directly replace many existing heat-only boilers without rewiring the system controls, simplifying like-for-like swaps.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#00594F; margin:28px 0 12px 0;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eCompact, Lightweight Casing\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eAt just 625mm high and 370mm wide, the boiler is sized to fit discreetly into a standard airing cupboard, keeping the installation footprint small in traditional heating layouts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eNo Pump Overrun Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eThe absence of a pump overrun function means this boiler can directly replace many existing heat-only boilers without additional wiring changes to the system controls.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eFront and Side Serviceable\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eKey components are accessible from both the front and side of the casing, reducing the clearance an engineer needs during routine servicing and maintenance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eRear Flueing Option\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eIn addition to the central top flue, a rear flue option is available, giving installers flexibility when routing the flue run through tight or awkward cupboard spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eIntegral Boiler-Only Frost Thermostat\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eA built-in frost thermostat protects the boiler itself from freezing in cold weather, supporting flexible siting even in less insulated plant spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:260px; background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003e93% Seasonal Efficiency\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.6; color:#2B2B2B;\"\u003eThe boiler achieves a 93% seasonal space heating efficiency, contributing to its A-rated ErP classification and helping to keep running costs down in traditional heat-only systems.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#00594F; margin:28px 0 12px 0;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:0 0 24px 0;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 12px; font-size:14px;\"\u003ePerformance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eMax Heat Output (Non-Condensing, 70°C Mean Water Temp)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eMin Heat Output\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e7.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eMax Heat Input (Gross)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e34.35 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eMin Heat Input (Gross)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e8.59 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eSeasonal Space Heating Efficiency\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e93%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eWater Heating Efficiency Class\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003eA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eMax Gas Rate (Natural Gas, G20, after 10 mins)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e3.27 m³\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 12px; font-size:14px;\"\u003eHydraulic\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eHeating System Max Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e2.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eHeating System Min Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eHeating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e25°C to 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eIntegral Expansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e7 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003eRegular \/ Open Vent (Heat Only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 12px; font-size:14px;\"\u003eGas \u0026amp; Electrical\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eFuel Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003eNatural Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eElectrical Supply\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e230V~ 50Hz (earthed supply required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eMax Power Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e44 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003ePump Overrun\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eIntegral Boiler-Only Frost Thermostat\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 12px; font-size:14px;\"\u003eDimensions \u0026amp; Weight\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eHeight\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e625 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eWidth\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e370 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eDepth\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eGross Weight (inc. Packaging)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e19.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 12px; font-size:14px;\"\u003eWarranty\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eParts \u0026amp; Labour\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:14px; color:#2B2B2B; border-bottom:1px solid #E0EDEB;\"\u003e5 Years (subject to manufacturer's T\u0026amp;Cs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"font-weight:700; font-size:17px; color:#00594F; margin:28px 0 12px 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 24px 0;\"\u003e\n\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; font-size:14px; list-style:none;\"\u003eDoes the Baxi 430 Heat Only provide hot water on its own?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eNo. As a heat-only (regular) boiler, it heats the central heating circuit only. Hot water is supplied via a separate cylinder connected to the system, with its own feed \u0026amp; expansion tank.\u003c\/div\u003e\n\u003c\/details\u003e\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; font-size:14px; list-style:none;\"\u003eCan this replace my existing heat-only boiler without rewiring?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eIn most cases, yes. Because it has \u003cstrong\u003eno pump overrun\u003c\/strong\u003e and does not require a permanent live, it is designed to directly replace many existing heat-only boilers without extensive changes to the control wiring — though a Gas Safe engineer should always confirm compatibility with your specific system.\u003c\/div\u003e\n\u003c\/details\u003e\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; font-size:14px; list-style:none;\"\u003eWill it fit in my airing cupboard?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eAt 625mm (H) x 370mm (W) x 270mm (D), the Baxi 430 Heat Only is compact enough to fit into most standard airing cupboards.\u003c\/div\u003e\n\u003c\/details\u003e\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; font-size:14px; list-style:none;\"\u003eDoes it need a permanent electrical live supply?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eNo. Unlike combi and system boilers in the Baxi 400 range, the Heat Only model does not require a permanent live connection, simplifying electrical installation.\u003c\/div\u003e\n\u003c\/details\u003e\u003cdetails style=\"margin:0 0 10px 0; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\n\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; font-size:14px; list-style:none;\"\u003eWhat warranty does the Baxi 430 Heat Only carry?\u003c\/summary\u003e\n\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eIt comes with a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e, subject to registration and an annual service carried out by a Gas Safe registered engineer.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"Default Title","offer_id":65218894561629,"sku":"7668936","price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Baxi400HeatOnlyBoiler.jpg?v=1764317424","url":"https:\/\/qualityheating.co.uk\/products\/baxi-430-heat-only-boiler-30kw","provider":"AIZO Quality Heating","version":"1.0","type":"link"}