Why is my truck smoking through the vents?
Why is my truck smoking through the vents? If the air temperature near the unit is below the dew point, this causes water vapor to form in the air and condense into water droplets, thus causing the fog or smoke. A dirty air filter or low fan speed may aggravate the condition. What does it mean when white smoke is blowing out of your vents while AC is on? The odorless, white steam or smoke coming out of your air conditioner is probably excess water stored in the heater box. Commonly, it is a sign of a restricted drain hole...