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Vaillant 242E?

Is it possible to clean the DHW Heat Exchanger plumber tells me I need a new one as its prob slightle dirty.
Pam, January 2008
i would recommend changing it easpecially if it is one of the older plastic units,a new unit is around £100 plus fitting

hope this helps

Craig, January 2008
link Click here to see other fixes for Vaillant.