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7 Reasons Your AC Blowing Warm Air

Everyone knows that spring and summer heat is serious business. The AC is very important in these times, but it is not surprising that it sometimes has a tendency to act. One common problem that homeowners experience is their AC blowing warm air. It can make you sweat both literally and figuratively if it happens on a sweltering day.

There are many reasons why the AC blows warm air, some are crazy, and others are very serious.

  1. Fan Setting:

The AC has both on and auto setting. If you turn it on, the fan will keep running, even when the motor is not cooling. This means that any air passing through your system stays warm. When the unit is set to “Auto”, the fan turns when it is only necessary to cool.

  1. Wrong Thermostat Setting:

The first factor you have to do is check your thermostat. Ensure your system is about to “COOL,” your fan is switched to “auto” and your temperature setting is read on your thermostat (minimum 5 degrees) the temperature of  AC is fine.

  1. Vent Blockages

The second step to think about is whether you have obstruction or restriction of airflow. Check your air filter first and see if there are any builds. When you have restricted airflow, it can warm hot airflow.

  1. Electrical Issues:

Your outdoor unit and indoor unit need to work together to keep your system running cool air properly. When the outdoor unit is not working, it may be the result of a blown fuse or a circuit breaker that has burst. When this happens, the outdoor unit is not running. Reach out to us at this point so we can help you solve this electricity problem safely and efficiently.

  1. The Evaporator Coil is Dirty:

There may be a dirty evaporator coil behind your A/C problem. The main reason is a dirty filter. When you can change the filter, you will need to get professional help to clean the evaporator coil.

  1. Coolant Leak:

The coolant in your air conditioner is to absorb the heat. If there is a leak, the coolant is not to do its job and the air conditioner stays out of the warm air and out of the air vents. Coolant leaks often come with a “hissing ” sound that alerts you to a potential problem.

  1. The Refrigerant is Low

A very small hole allows the refrigerant to come out in the winter. Low refrigerant through the frozen pipes is also evident. If you had to add a refrigerator last summer, chances are you’ll be again. This requires a qualified, licensed HVAC technician to measure the coolant stage and add to restore capacity.

There may be no guarantee the refrigerant will last. If you’ve had to add refrigerant as a minimum two times in a season, it may be time to upgrade to a high-efficiency unit that makes use of non-ozone-depleting refrigerants.


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