Recently you recommended using your AC and your defroster when defrosting the windows. The reason being the AC acts as a dehumidifier removing excess moisture from the air. This doesn’t work for two reasons. First: the small amount of moisture that cold air can hold. Example – if you heat sat…

Using your AC when defrosting your windows

NYBo July 16, 2008, 2:47am 2

It dehumidifies the warm air in your car. The humidity comes mainly from your breath.