Heat Exchanger

The boiler heat exchanger is the device that transfers heat from one medium to another without them coming into direct contact. The heat exchanger will usually sit above the burner within the boiler and when ignited, it rapidly heats the water that is pumped through the exchanger for the central heating. A Combi boiler will also have a plate heat exchanger which is used in the boiler to heat water for the Domestic Hot Water system.