Baxi Heat Exchanger 28kW 7216612

The Baxi 7216612 is a 28kW heat exchanger, the component that transfers heat from the burner's combustion gases into the water circuit of the appliance. It is used across the Baxi Main Eco Combi and Main Eco System range, where it sits in the flue path and forms the primary barrier between the combustion side and the sealed water side. This unit is supplied in refurbished condition.

• Water weeping or staining around the heat exchanger body or its connections
• Repeated pressure loss on the sealed system with no visible leak elsewhere
• Kettling, banging or rumbling noises from the appliance during heat-up
• Poor domestic hot water output or reduced heating performance despite correct burner operation
• Visible corrosion, scale build-up or distortion on the waterways or fins

• Check the GC number on the appliance data badge against the compatibility list to confirm the correct variant
• Confirm the existing part number and any alternative number stamped or labelled on the old component
• Inspect the seals, gaskets and washers on removal and replace any that are compressed or perished before refitting
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.