There are three different types of heat exchanger that can be installed, the primary heat exchanger, the secondary heat exchanger and in some of the new condensing boilers, the condensing heat exchanger. The primary is present in almost all boilers and it allows the transfer of heat from the burner to the water within the system. The secondary heat exchanger is exclusive to combination boilers and allows the heat to be transferred between two closed systems.
The condensing heat exchanger is present in some of the boilers to extract heat from the flue products.
This part is present 12 different boilers in the Baxi range including the Baxi Combi 105 HE, Combi Instant 105 HE, Combi Instant 80 He, Combi 24HE.
At the bottom of the page is an appliance table with the links to all boilers that contain this part. Please use this if you would like to view all other spares that fit that model by clicking on your appliance model and download the user manual for that appliance. If none of these models match the appliance you have, please contact us before ordering so we can confirm this part is compatible.
We recommend that all parts are fitted by a fully qualified Gas Safe Registered Engineer. If you require any help locating a part, please feel free to contact us.
|Manufacturer||Appliance Model||GC Number|
|Baxi||Combi 105 HE||47-075-18|
|Baxi||Combi Instant 105 HE||47-075-19|
|Baxi||Combi Instant 80 He||47-075-17|
|Potterton||Performa 24 Eco He|
|Potterton||Performa 24i He||47-393-12|
|Potterton||Performa System 12HE|
|Potterton||Performa System 18HE|
|Potterton||Performa System 24HE|
|Potterton||Performa System 28HE|
Baxi / Main / Potterton 5112388 Secondary Heat Exchanger - Retrofit Assembly
|Part Type||Heat Exchanger Components|