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August 27, 2020

Why is My AC Blowing Warm Air

Why is My AC Blowing Warm Air

Why is My AC Blowing Warm Air

Few things are as aggravating as your AC unit doing the exact opposite of its job: blowing warm air. The following represent the most common reasons your AC might be blowing warm air.

  1. It’s a no-brainer, but worth troubleshooting before you dig in deeper. Double check to make sure your thermostat is set to “cool/cold” and not heat, and that it isn’t accidentally programmed to switch to “heat” at night.
  2. Faulty Thermostat. Thermostats, both digital and analog, can fail. Despite all of your troubleshooting, if things still aren’t working right, it could be the thermostat.
  3. Clogged Unit. When outside units become clogged (often with debris such as dirt or leaves) it can fail to adequately remove heat from the air.
  4. Loss of Power. Tripped fuses, faulty electrical boards, or even damage to wires from rodents can all cause a loss (partial or complete) in the power needed for the unit to work effectively.
  5. Dirty Evaporator Coil. A dirty evaporator coil causes significant inefficiency and can result in warmer than usual air coming from your system.
  6. Low Refrigerant. Refrigerant is necessary for the absorption of heat from your home’s air. If levels get low (from a leak for example), this can cause warm air to pump out of your system.

If you notice warm air coming from your AC unit, don’t let it go. Call an HVAC specialist today and get your system running like new again in no time.

Posted On:
August 27, 2020


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