Cap-Gun Sound from Water Heater

Discussion in 'Water Heater Forum, Tanks' started by molo, Feb 19, 2011.

  1. molo

    molo Member

    Joined:
    Sep 23, 2006
    Location:
    Cold New York
    A friend reports a cap-gun sound from his natural gas water heater. It is only 1.5 yrs old. It is not the calcium build-up sound of rumbling. He describes it as a quick sound and he has heard it approx. 6 times now. Does this "sound familiar" to anyone?

    Thanks for any replies!
     
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