My dad installed a mixing valve that allows metered hot water to mix with the cold water so the toilet doesn't drip due to condensation build-up. With the house (and toilet) very warm add in the cold well water, there is a lot of condensation that puddles the floor... The only issue now is the annoying buzzing noise (from the pipes) you hear every time the toilet is flushed until the tank is refilled and the noise stops. I tried adjusting the valve, but still makes buzzing... None of the pipes are touching. No air in the system. Anybody ever have an issue like this ???
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