There are two types of heat exchanger that can be present, the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and uses heat from the burner to raise the temperature of water within the system. The sec
Supplier Part Number: 178973
20 Plates
4 O-rings and Screws included
Technical specification
Waist Sizeaa22cd19fxTypeDomestic Hot WaterSupplier Part Number178973Brand NameVaillant
Reviews
Vaillant 178973 DHW Heat Exchanger 20 Plates (Ecotec Plus 800 & VUW 2005 to 2010)