Humming sound on new install.
Posted by: @tim441Just a thought... can you check flow rates?
Yes, Live Monitor on the 'HPAI' (not the Sensocofort) tells you the flow rate. It also tells you lots of other very useful things and is worth getting to know! Unlikely to be this unless there is air trapped somewhere, but possible of course. Get the flexi fixed though whatever you do.
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
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