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  1. #1
    Join Date
    Apr 2012
    Posts
    1

    Default ventless gas heater

    I have a ventless gas heater that bangs when it shuts off, I was wonder what causes this.

  2. #2
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,066

    Default Re: ventless gas heater

    Probably sounds of metal constricting and cooling once the flame is out.

    However, with all the risks with using a ventless gas heater, why are you using one?

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