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    DLindberg49's Avatar
    DLindberg49 Posts: 2, Reputation: 1
    New Member

    Feb 4, 2007, 06:01 AM
    Forced air gas furnace fan auto or always on?
    Is it better to leave the fan set to auto or always on, especially during extreme cold conditions when furnace is kicking on much more often? The furnace is 3 years old.
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member

    Feb 4, 2007, 10:05 AM
    It won't change the cycle rate of your furnace unless it adds to the overall heat loss of you home. Also see here.
    DLindberg49's Avatar
    DLindberg49 Posts: 2, Reputation: 1
    New Member

    Feb 5, 2007, 09:38 PM
    Thank you. I can see what you mean, but I guess what I was asking is "is it better or more efficient to leave the fan on and/or less strain on the fan due to not having it go off and back on so much?

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