My halstead combi boiler is losing water pressure. I have to fill it up on a daily basis. There is no sign of visual leaks - concrete floors (no damp patches) and ceilings fine.
Check pressure relief /blow off pipe which should go from boiler thru wall to outside (usually a copper pipe).
If dripping water this is your leak, if not check radiator valves and boiler itself.
Scottie
March 2009
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