Knowing how to troubleshoot an air conditioner often starts with the main control – its thermostat. Thermostats come in a variety of options, starting with very basic models that simply control heating and cooling temperatures and fan operation.
Running your air conditioning system can account for a significant cost during the summer. Nearly half of your average electric bill is spent on cooling your space.
One of the most common air conditioning problems is improper operation. If your air conditioner is on, be sure to close your home's windows and outside doors.