Hot water heater banging

Ever since our new propane hot water heater was installed it has banged as it heats up. I contacted the manufacture and they suggested I flush it and I did that to no avail. I have rotated the exhaust twister thing in the center flue to no avail either. Just wondering if anyone has a remedy that I am not aware of or haven’t tried? — Do you have an expansion tank above your water […]

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