Surprises are of two types, pleasant and irritating. If you switch on your air conditioner system, and hot air comes from the system instead of cool air, the first reaction can be irritation or anger. Your second response will be to contact a professional technician for HVAC repair in Phoenix.
However, you need not contact a professional technician each time your air conditioner troubles you. You can fix some air conditioner problems yourself with some basic knowledge. If we talk about the hot air problem from the system, here are some reasons you should know to avoid it in the future: