As many who have experienced the problem can attest, there is nothing fun about a car's air conditioning system breaking at the height of summer. A broken AC system can be quite frustrating because of the inconvenience to you and the fact that it can be a complicated problem to solve. However, a non-functional AC system can also harm your car, as it puts excess stress on other parts of the car's AC system that are still good. Ultimately, this wears them out more quickly. Therefore, you're always better off getting the AC system repaired as soon as you notice problems.