Vaillant Heat Exchangers
There are two different types of heat exchanger that can be installed, 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 secondary heat exchanger is only required in a combi boiler and allows the heat to be transferred from one closed system to another.

Vaillant 0020020018 ecoTEC Pro VUW Domestic Hot Water Heat Exchanger - 13 Plates
Part No: 1379874 / MPN: 0020020018

Vaillant 0020038572 Heat Exchanger - ecoTEC Pro VUW/ecoTEC Plus VUW/ecoTEC Pro28
Part No: 1383597 / MPN: 0020038572

Vaillant 178973 Heat Exchanger - DHW 20 Plates - ecoTEC Plus R1/ecoTEC VUW R1
Part No: 1376534 / MPN: 178973

Vaillant 0020135131 Heat Exchanger - ecoTEC Plus VU/ecoTEC Pro VUW
Part No: 1383357 / MPN: 0020135131

Vaillant 0020135129 Heat Exchanger - ecoTEC Plus VU/ecoTEC Pro VUW
Part No: 1383355 / MPN: 0020135129

Vaillant 065131 Secondary Heat Exchanger 12 Plates - Turbomax Plus VUW/Pro VUW
Part No: 1372673 / MPN: 065131

Vaillant 0020210464 Heat Exchanger - Ecotec Plus/Ecotec Pro/Ecotec VU
Part No: 1385460 / MPN: 0020210464

Vaillant 0020246710 Heat Exchanger - Ecotec Pure VUW/Ecotec Sustain VUW
Part No: 1388524 / MPN: 0020246710

Vaillant 0020195461 Heat Exchanger - Ecofit Pure/Home Combi/Ecofit Sustain
Part No: 1387894 / MPN: 0020195461