A car's air conditioning system works by converting refrigerant from a liquid to a gaseous form. The refrigerant absorbs heat and humidity from the car when it changes states, allowing the system to produce cold, dry air. Your car's air conditioning is critical; else, your car will cook. So you need a car ac mechanic to get your car's air conditioning repaired. You must seek out an auto care shop to have your car's air conditioning repaired.