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no, hot water is constantly hot. Just been reading around and trying to pinpoint the noise. If I flush the toilet the noise stops briefly, made me think it was pressure related but no amount of fine tuning the flow seems to make a difference - bar restricting the flow to a trickle...

doesn't appear to be cycling, all in tune with the thermometer. If I turn it down for the day the boiler stays off for the day bar the odd stir (I think I read it stirs every 20 mins). I can't easily measure the temp of the flow and return sorry, both seems warm. The issue is only when the...

Analyser was done yesterday, passed with flying colours (yearly check-up and why I originally had the engineer booked). The noise seems to be coming from the 'main heat exchanger' but the issue is when the hot water is running - I'd expect the noise to therefore come from the 'domestic hot...

Silencer is what Vokera call it looking at their documentation but yes it's an air intake. Engineer is stumped as me.

Gents 18 month old Vokera Compact 29 combi boiler installed with new radiators, pipes, the lot (renovation project). Recently inside the last 2 months the boiler has started to 'whine' when running the hot water (YouTube: https://www.youtube.com/watch?v=qaN4Rrvy2BM). Rarely does the...