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Mend Vaillant ecotec 418 Boiler Heat Exchanger Ecotec

Vaillant ecotec 418 needs a new heat exchanger?

How hard is this to change, the boiler is open vented, heat only. I am "Gas Safe" registered.

Roger Humphries
November 2011
VaillantVaillant ecotec 418Heating, Home Heating SystemsBoiler Heat Exchanger Vaillant Ecotec

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