DoofusOfTheDay
Member
I installed a new gas water heater(GE 40 gallon), and Watts(DET-5 2.1Gallon) expansion tank a few weeks ago. All is working fine, except I noticed that when somebody takes a shower or somebody turns on the hot water full bore like doing dishes in the sink, there is a little bit of noise coming from the expansion tank. It only lasts for a few minutes, kind of a groaning noise, like something hot inside cooling down maybe or maybe air settling? It has done this since the first day of install, I am just slow in getting around to asking about this. And you wouldn't hear it unless you are in the same room as the water heater. Maybe it is normal to hear a little noise from it after a lot of hot water get's used, I don't know. Thanks.