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My furnace keeps blowing cold air after it is supposed to shut off. Why?

Posted by Anonymous on

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If you mean the heat or AC cycle, it has to do this to cool down the furnace/coils. It is a safety cycle and do not try to defeat this purpose.

Posted on Jan 03, 2011

  • Anonymous Jan 03, 2011

    It will blow forever until I shut off the furnace, push a reset button on the vent safety switch, and then turn the furnace back on. It does't do this all the time, just here and there.

  • Frank Gilbert
    Frank Gilbert Jan 03, 2011

    I see now. Thanks for the added info. Sounds like contacts can be an issue here and I do not recommend trying to fix this yourself. I think maybe a good reputable repairman should do it. I could if I was there but you have listed quite a few issues. I'm sorry I could not help you here.

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