The Baxi Domestic Hot Water 16 Plate Heat Exchanger (7225723) is a replacement heat exchanger designed for selected Baxi, Main and Potterton combi boilers.
The plate heat exchanger transfers heat from the boiler's primary heating circuit to the incoming domestic water supply, providing hot water for taps and showers without the two water circuits mixing. Replacing a faulty heat exchanger can help restore domestic hot water performance where the original component is damaged or no longer operating correctly.