Heat Exchanger DHW (20 Plates) 178973 2081424 (Compatible)

Vaillant Heat Exchanger 178973 (Compatible)

For use with the following Vaillant boilers;

Vaillant ecoTEC PLUS 824

and Vaillant ecoTEC PLUS 831

with Vaillant ecoTEC PLUS 837

plus Vaillant VUW 246/3-5 (2005-2005)

fits Vaillant VUW 246/3-5 R1 (2005-2010)

and Vaillant VUW 316/3-5 (2005-2005)

with Vaillant VUW 316/3-5 R1 (2005-2010)

A primary heat exchanger is found in all boilers, using heat from a burner to raise the temperature of the water in the system, while a secondary heat exchanger is present only in combis and allows the heat to be transferred between closed systems.

Please note this is a compatible part 2081424