My nasty old Baxi (which I have replaced many parts on) is leaking water from the auto air vent on the top. Do I just need to drain down the hot water side of it and refill to correct this or is it something more sinister?
A
had this problem recently. Rubber sealing washer had rotted through. Replaced it easily with a new one from Band Q. had to use an adapter (also b and q) to make sure it fitted back in place. Working well now. System up and running well - no leaks
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