I have me furnace on auto fan, I put it on 720 and its just blowing out cold air.it worked find last night I turned it down to 66 went ot bed woke up and it was freezing at 62.what could be the problem
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I have me furnace on auto fan, I put it on 720 and its just blowing out cold air.it worked find last night I turned it down to 66 went ot bed woke up and it was freezing at 62.what could be the problem
Why is my furnace blowing cold air.
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