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  1. #1
    Join Date
    Oct 2009
    Location
    Philadelphia, PA
    Posts
    4

    Question Natural gas gravity air feed furnace

    (( Is that the correct name for the heater ? )) lol

    My home which was built in 1950 has a gravity fed heater.

    The local gas company recently changed the gas meter and as the technician was going to relight the pilot on the heater, he noticed that the ACO ? did not shut off the gas to the pilot light.

    Two questions...

    What is an ACO?
    Does it have to be replaced before relighting the furnace?

    I understand that these types of heaters are pretty much extinct and I do plan to replace it once this winter season is over. I just purchased my home last October and didn't have the funds to replace it (( which I understand is gonna cost an arm & a leg )).

    Thanks for any information you may have !

  2. #2
    Join Date
    Jun 2007
    Location
    Fayette County, Ohio
    Posts
    5,803

    Default Re: Natural gas gravity air feed furnace

    Automatic Cut Off, it should cut off the gas to the pilot light if the pilot light goes out. It is controlled by the thermocouple. You over ride it when you put the control in the pilot position and hold it in until the thermocouple heats up after you light the pilot. If it is not working and the pilot light gets blown out it would allow gas to continually flow. Possibility of an explosion.
    Jack
    Last edited by JLMCDANIEL; 10-21-2009 at 11:58 PM.
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  3. #3
    Join Date
    Oct 2009
    Location
    Philadelphia, PA
    Posts
    4

    Smile Re: Natural gas gravity air feed furnace

    Jack,

    THANK YOU ! for taking the time to reply to my question. Your information was invaluable to this do-it-herself'er . lol

  4. #4
    Join Date
    Feb 2010
    Location
    Iowa, Quad-Cities area
    Posts
    129

    Default Re: Natural gas gravity air feed furnace

    Regarding replacing your gravity furnace and ductwork.
    It will only add value to your home.
    The home was "discounted" because of the gravity furnace (heating only) system.
    Has the asbestos been removed already?

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