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- 16 Jan 2009
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I've had a new Baxi boiler fitted in Oct. The old boiler was upstairs and the new is downstairs in the garage.I never had any noise from the old system but now I'm getting noises in the bedrooms and bathroom upstairs which the plumber says is pipe expansion.They've just re-done the power flush (which was poorly done 1st time and gas was building up in the bathroom rad) and replaced the TRVs on the upstairs rads but the noise persists.the noise happens each time the boiler kicks in but what I can't understand is that it becomes worse (louder and more frequent) when the heating has been on for several hours. Why should this be if it was pipe expansion? They do not want to take up all my floorboards looking for a problem pipe(understandably) but I am left with a heating system that I cannot have on because it is too noisy. Please can anyone suggest any other possible causes?? I am at my wits end.