Boiler Spares

The Baxi Domestic Hot Water 20 Plate Heat Exchanger (7223558) is a replacement secondary heat exchanger designed for selected Baxi and Potterton combi boilers.

The secondary heat exchanger transfers heat from the boiler's primary heating circuit to the domestic hot water circuit, allowing hot water to be supplied to taps and showers. Its 20-plate design provides the heat transfer required for domestic hot water operation.

Suitable for a range of Baxi and Potterton appliances, this component is intended for boiler maintenance and repair.

The Baxi 5121447 Fan Assembly is a replacement boiler component designed for selected Baxi Duo-tec, Megaflo and HE A boiler models.

The fan supports the boiler's combustion process by supplying the necessary airflow to the combustion chamber and helping to remove combustion gases through the flue. It is an important part of the boiler's operation and safety system.

Suitable for the Baxi models listed below, this replacement fan assembly is intended for professional boiler servicing and repair. Please check your boiler's exact model and existing part number before ordering.

Baxi standard telescopic flue in black (Stock Code: 720598701), compatible with Baxi, Main and Potterton boilers. Designed for flexible horizontal flue installations, this adjustable flue kit ensures efficient exhaust ventilation and easy fitting. Ideal for domestic boiler installations requiring a reliable and extendable flue solution.

The Baxi 7658781 is a wireless RF programmable room thermostat designed for compatible Baxi 200 and 400 Combi boilers. This single-channel mechanical thermostat provides programmable heating control, helping users manage room temperature and heating times for greater comfort and efficiency. It is a genuine Baxi boiler accessory with a plug-in receiver.

Genuine Baxi/Main/Pott 135° Flue Bend Pair (stock code 720647901) with fixing screws, designed for compact boiler flue routing and directional changes. Precision‑engineered bends ensure secure, compliant installation with compatible Baxi, Main and Potterton boilers, delivering smooth flue gas discharge and reliable performance for domestic heating systems.

This genuine Baxi Main electrode set (7216299) is designed for use with Main Eco, EcoBlue and Heat boilers. A complete replacement ignition and flame sensing electrode kit, it helps maintain reliable boiler ignition and efficient heating performance. Ideal for boiler servicing, repairs and heating engineers.

The Baxi 720011701 Fan Assembly is a replacement combustion fan designed for a range of compatible Baxi domestic boilers.

The fan plays an important role in the boiler's combustion process by supplying fresh air to the combustion chamber and helping to expel combustion gases through the flue. It also forms part of the boiler's safety system, with the boiler designed to prevent burner operation if the fan is not operating correctly.

Suitable for selected Baxi HE, HE A, ErP and Promax boiler models, this replacement fan is intended for professional boiler servicing and repair.

The Baxi 5112430 Fan Assembly is a replacement boiler component designed to support the safe and efficient operation of compatible high-efficiency (HE) boilers.

The fan plays an important role in the boiler's combustion process by supplying air to the combustion chamber and helping remove combustion gases through the flue system. The boiler's safety controls monitor fan operation to ensure the appliance operates correctly.

This genuine Baxi replacement fan assembly is suitable for a range of compatible Baxi, Main and Potterton boiler models.

The Baxi Gas Valve Kit 720301001 is a replacement gas valve kit designed for selected Baxi, Main and Potterton boiler models.

This kit is suitable for use with a range of compatible heating appliances, including Baxi Platinum Combi HE, Solo HE and Duo-tec HE models, as well as selected Main and Potterton boilers. Washers and screws are included to assist with fitting.

Ideal for boiler maintenance and repair, this replacement kit should be checked against the appliance model and existing part number before ordering.

The Baxi 5114710 Hydraulic Inlet Assembly is a replacement boiler component designed for selected Baxi, Main and Potterton boiler models. This assembly forms part of the boiler's hydraulic system, managing the incoming water supply and supporting the circulation of water through the appliance.

Supplied with an integrated bypass, this hydraulic inlet assembly is specified for compatible Baxi Duo-tec and Eco boiler models, including the 28 HE, 33 HE and 30 Eco variants.

An important replacement component for compatible boiler servicing and repairs, this assembly should be checked against the existing part number and exact boiler model before ordering.

The Baxi 7224344 Hydraulic Outlet Assembly is a replacement boiler component designed for selected Baxi, Main and Potterton combination boilers.

The assembly forms part of the boiler's hydraulic system, helping direct heated water between the central heating circuit and the domestic hot water supply. This allows compatible combination boilers to provide heating and hot water from a single appliance without requiring a separate hot water storage cylinder.

Suitable for selected Baxi Combi, Main Combi HE and Potterton Performa HE models, this replacement assembly is an important component for compatible boiler servicing and repairs.

Always check the existing part number and exact boiler model before ordering to ensure compatibility.

The Baxi Motor Spares Kit 7216534 is a replacement motor kit designed for the Baxi EcoBlue Advance Combi ErP boiler.

The motor operates the boiler's diverter valve, helping control the direction of water flow between the central heating and domestic hot water systems. It is a replacement component for maintaining the correct operation of the diverter valve.

The Baxi 241900 Multifunctional Valve is a replacement gas control component designed for selected Baxi, Main and Potterton boiler models. It regulates the supply of gas to the burner during boiler operation, helping maintain the correct gas flow for the combustion process.

Controlled by the boiler's printed circuit board (PCB), the valve opens when the burner requires gas, allowing the appropriate supply to pass through to the burner assembly.

Suitable for selected Baxi HE and Solo HE, Main HE and Potterton Promax HE Plus boiler ranges, this replacement component is an important part of the boiler's gas control system.

Always check the existing part number and exact boiler model before ordering to ensure compatibility.

The Baxi O-Ring 60mm (5115769) is a replacement sealing component designed for use in selected Baxi Combi boilers.

O-rings are used within heating appliances to create secure seals between connected components and pipework, helping to prevent water or gas leaks. This 60mm O-ring is suitable as a replacement where the specified part is required. Always check the part number and appliance compatibility before ordering.

The Baxi 248731 Printed Circuit Board is a genuine replacement boiler PCB designed for compatible Baxi Combi Instant and Potterton Performa boilers. The PCB acts as the boiler’s central control board, managing key heating system functions via connected sensors, thermostats and switches.

The Baxi 5114690 Pipe Fixing Clip is a replacement boiler component designed to help secure pipework and maintain stable connections within compatible heating appliances.

Pipe fixing clips play an important role in supporting and retaining internal pipework, helping prevent movement or loose connections during normal boiler operation.

Suitable for selected Baxi appliances, this replacement clip is a practical spare for compatible boiler servicing and repairs.

Always check the existing part number and exact boiler model before ordering to ensure compatibility.

Genuine Baxi 247224 Plate Heat Exchanger Kit for compatible Baxi Combi HE boilers. A replacement boiler spare designed to transfer heat efficiently between the primary heating and domestic hot water systems, helping restore reliable hot water performance.

The Baxi 7224342 Pressure Differential Assembly Kit is a replacement hydraulic component designed for selected Baxi, Main and Potterton combination boilers.

The assembly forms part of the boiler's hydraulic control system, helping manage the flow of water between the central heating and domestic hot water circuits. In combination boilers, the diverter valve directs heated water to either the radiators or the hot water outlet as required, allowing both heating and hot water to be provided without a separate storage cylinder.

Suitable for selected Baxi Combi, Main Combi HE and Potterton Performa HE models, this replacement kit is an important component for compatible boiler servicing and repairs.

Always check the existing part number and exact boiler model before ordering to ensure compatibility.

The Baxi 248056 Pressure Relief Safety Valve is a replacement boiler component designed to protect central heating systems from excessive pressure. Rated at 3 bar, the valve automatically releases excess system pressure when it exceeds the specified limit, helping to maintain safe operating conditions and protect boiler components.

Featuring a push-fit inlet connection and female screw-fit outlet connection, this pressure relief valve is suitable for a range of Baxi, Main and Potterton boiler models.

Genuine Baxi 720878202 Printed Circuit Board (PCB) for compatible combi and system boilers. This boiler control board manages key appliance functions and is suitable for selected Baxi Duo-Tec 2, Megaflo 2, Neta-Tec and Baxi 100 models.