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11/09/2025 10:20 pm
Had a new Vaillant 7kw installed with new 28mm runs for primaries and flow and return. I’ve got a variable pitch humming sound that resonates through the house depending on how hard the heat pump is running. Admittedly this is just a test run I’m doing tonight but it worries me as i can hear it above the TV.
one thing my plumber who ran the 28mm’s did do was clip them against the wooden ceiling trusses. Could this be transferring noise into the house? With the old boiler setup and pump you could only really hear the pump where the pipes were exposed in the kitchen just below the pump in the cupboard above.
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