Product Information: There are two different kinds of heat exchanger that can be installed, they are the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and it allows the heat to be transferred from the burner to the water within the system. The secondary heat exchanger only appears on combination boilers and allows the heat to be transferred from one closed system to another.
This part is present in 15 different boilers in the Baxi range including the Baxi PERFORMA 24 ECO HE , PERFORMA 24 I HE , PERFORMA 30HE , PERFORMA SYSTEM HE, PERFORMA SYSTEM HE.