My home furnace is not working properly. It only blows cold air.

What brand and model of furnace is it that you have? Knowing that will help those who know the most about these kinds of things to help you the best. Thank you.

Suggest you repost on the Heating and Air Conditioning site. The experts are there.

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Originally Posted by Clough

What brand and model of furnace is it that you have? Knowing that will help those who know the most about these kinds of things to help you the best. Thank you.

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Kelvinator

What causes my furnace to blow cold air?

Actually I have the same problem, I have a tappan furnace high efficiency..

It is only blowing cold air not hot, I was told that my limit switch is bad however I already replaced it and it is still doing the same thing, also I can not turn the unit off from the digital thermostat I have to shut it off from th disconnect switch. Can someone help!