As temperatures begin to skyrocket this summer, air conditioners tend to break down as they are pushed to their limits. Your unit is designed to fight the sweltering heat, so imagine your displeasure when it starts blowing warm air. Today we’ll be going over some potential solutions to this problem so you can hopefully avoid a service call.

Dirty Air Filters
When the unit’s air filter is dirty, your air conditioner can’t move cool air properly through the system. This strains your unit and could cause it to blow warm air. When determining why your A/C isn’t working properly, check the air filter to make sure it’s clean. If the filter’s dirty, replace it with a new, clean filter and see if the warm air issue resolves.

Thermostat
It may sound obvious, but one of the things you should check is the thermostat. If your air conditioner is blowing hot air, the thermostat might have been accidentally set to “heat.” Simply flip the thermostat setting back to “cool” and see if the air conditioner begins to blow cool air again. You also want to make sure the batteries are working and that the temperature is not set too high.

Lack of Electricity
In a split air conditioning system, both the indoor and outdoor components must run to complete cooling cycles and deliver cool air to your home. If the power supply to your house is interrupted, the indoor components of your system are the only ones working, which causes warm air to blow from the vents. Ensure your outdoor unit has power and reset it if necessary.

Refrigerant
Refrigerant leaks also have the potential to make your A/C blow hot air. When refrigerant escapes the system through a leak, the unit doesn’t have the proper charge to complete cooling cycles. That’s why the air you feel indoors is warmer than it should be. The best way to prevent these leaks in the first place is to schedule annual air conditioning tune-ups before the season begins.

why is my air conditioner blowing hot air?