Why is my furnace blowing cold air? | 4Front Energy
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Why is my furnace blowing cold air?

If the furnace is blowing cold air after you have started the unit and let it run for several minutes, there is likely a problem with the unit, so it may need repair or service. Once the burners have shut off and the unit is in cool-down mode, there may be some cold air that is generated. This is not normally a problem.

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