Baxi 28 Combi Boiler Plate Heat Exchanger (PHE) 720790001
Trade pricing & order
Logged-in trade customers can view their assigned B2B price and add this item to their trade cart.
Trade pricing is available to approved accounts only. Sign in to your trade account to see your contracted B2B pricing and order this part.
Technical details
Baxi Boiler Plate Heat Exchanger 720790001 H90657
Product Overview
The Baxi Boiler Plate Heat Exchanger 720790001 (H90657) is a critical component designed for selected Baxi and Potterton heating systems. The plate heat exchanger transfers heat from the primary heating circuit to the domestic hot water supply, allowing hot water to be produced while keeping the two water circuits separate.
As an important component within the boiler, the plate heat exchanger plays a key role in supporting reliable domestic hot water performance and the overall operation of the appliance.
ℹ️ Product Condition Options:
This item is supplied as Refurbished. Refurbished units are professionally inspected and tested to help ensure reliable operation. Please verify compatibility before purchasing to ensure correct fitment.
Technical Insight & Common Servicing Requirements
The plate heat exchanger is designed to transfer heat between the central heating circuit and the domestic hot water circuit. During normal operation, it is exposed to heating water and mains water flow, and over time internal scaling, debris, or general wear may affect its performance.
During routine servicing or repair work, engineers may inspect or replace the plate heat exchanger due to:
- Internal scaling or blockage
- Reduced domestic hot water performance
- Inconsistent hot water temperatures
- Restricted water flow
- Internal leakage between water circuits
- Replacement during boiler repair procedures
A faulty plate heat exchanger can affect normal boiler operation and may result in poor hot water performance, unstable water temperatures, reduced flow rates, or other domestic hot water-related issues.
Compatibility
This part (MPN: 720790001) is designed for models within the Baxi and Potterton ranges. Please strictly verify the part number against your boiler's technical manual before ordering to guarantee correct fitment.
Safety Advice
Boiler parts involve gas, water, electricity, and heating system components. Installation and servicing must be carried out by a Gas Safe registered engineer in accordance with current regulations.
This part fits the following boilers:
