If you have a quality air conditioning system that received a professional installation, you probably won’t run into any serious malfunctions with it for its first several years. Keeping up with regular maintenance will reduce the chance of malfunctions even further.
However, there are some AC problems that can crop up even in the best cared-for systems. One of the most common is known as short-cycling, which is both a problem in itself and a symptom of other kinds of malfunctions.