Furnace blows cold air but not warm air

amandalynn21 Posts: 1, Reputation: 1

New Member

Nov 15, 2010, 01:44 PM

Furnace blows cold air but not warm air

My furnace blows cold air all night and kicks on once during the day and blows warm air. What could the problem be. We have paid a place to come look at it but they said it was the motherbored again. We just replaced the motherbored a yr ago.. Please any ideas

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