Expansion tank for gas water heater

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  • Expansion tank for gas water heater

    Why does the expansion tank make a popping noise? I notice it after using the shower mainly.

  • #2
    It can be a number of things, It may just be normal expansion, or it could be , the water is too hot, the pressure is too high, a defective relief valve, the wrong type of tank for yours needs, or other.
    I answer all plumbing and heating questions, all day long.

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