VAILLANT ECOTEC PLUS 637 / 837 / 937 MAIN HEAT EXCHANGER KIT 0020135134

Upgrade or repair your Vaillant boiler with this genuine main heat exchanger kit (Part No. 0020135134), designed specifically for the ecoTEC Plus 637, 837, and 937 models.

This essential component transfers heat efficiently from the burner to the water, helping restore reliable performance and heating efficiency.

✔ Product Condition

• Brand new item

• May arrive in a different box to the original manufacturer packaging (reboxed), but completely unused and in perfect condition

• Fully tested and guaranteed genuine part

Suitable for the following boilers:

• Vaillant ecoTEC Plus 637

• Vaillant ecoTEC Plus 837

• Vaillant ecoTEC Plus 937