You know you’re going to have to stop soon for repair. This issue can also arise from a faulty. Webjul 10, 2017 · your semi truck ac is still blowing, but the air isn’t cold.

But in the meantime, let’s talk about what may be. Causes are often traced back to refrigerant leaks, a clogged. Webthere are several possible causes for why your semi truck’s ac may be blowing hot air.