Your AC unit is a complex system of energy sources and parts that work in harmony to deliver the exact temperature you desire. Besides ruining your home comfort, not taking care of your AC unit can lead to a host of expensive problems and can even affect your health. The last thing you want is to have your AC unit break down in the middle of a heatwave and have to wait days or even weeks to get it repaired. Knowing how to maintain your AC unit and when to call a professional is vitally important. Here’s the ultimate guide…