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Went to a house with an older expansion tank that is mounts between the joist, also noticed there was no gauges or pressure relief valve . I went for a no heat call, pump was shot. No air separation either.
I don’t want to scare the customer financially but I’m going to have to tell him he needs a pressure relief valve and a gauge but to change the tank to a typical 4.4 gallon expansion tank just cut old one out and install the 4.4 gallon or am I missing something?