If you are like many households, chances are that you rely on your air conditioning unit to keep cool on a hot summer’s day. While air conditioning is a major part of modern life, you may be wondering about how your AC unit works. The main principle behind air conditioning is evaporation. As refrigerant evaporates in your air conditioner, it will create very cold air. A fan pushes this air into your duct system. If your home is in need of air conditioning repair in Portland, be sure to contact a highly rated HVAC company near you. A trained HVAC technician will be able to determine the precise issue that is troubling your system. For more information about the science behind air conditioning, check out this video from Mike Ermann.