Causes are often traced back to refrigerant leaks, a clogged. Webjul 10, 2017ย ยท your semi truck ac is still blowing, but the air isnโ€™t cold. You know youโ€™re going to have to stop soon for repair.

Webthere are several possible causes for why your semi truckโ€™s ac may be blowing hot air. These include a lack of refrigerant, debris buildup inside the unit, or an electrical. This issue can also arise from a faulty.