Many problems can cause your AC to blow warm air. So, unless we inspect your unit, it’s nearly impossible for us to determine the exact problem you’re dealing with.
But you can take a stab at diagnosing your AC problem yourself if you look for the right signs.
If your AC is blowing warm air, you most likely have one of the following problems:
We’ll explain each issue in detail and show you what you can do to fix the problem and what requires a professional.
We’re slowly coming out of the heating season and a lot of times; homeowners simply forget to move the thermostat tab from HEAT to COOL
So, to avoid an unnecessary service call, quickly check your settings and make sure you’ve set your thermostat to COOL.
Your AC uses refrigerant to absorb the heat inside your home and release it outdoors. That refrigerant is housed in thin copper tubes that run throughout your HVAC system in a self-contained circuit.
But, if there’s a leak somewhere in the coil, refrigerant escapes and decreases your AC’s ability to cool the air in your home, which means you’ll feel warm air from the vents.
Other signs of a refrigerant leak include:
Ice on your AC's refrigerant lines or evaporator coil (seen here) could mean your system has a refrigerant leak.
Your AC relies on the cooperation of two units:
So, if your outdoor unit won’t come on for whatever reason, your indoor unit will most likely continue to run but won’t be able to absorb the heat from the air. Meaning the air that is pushed out of the vents won’t be cooled.
Reasons your outdoor unit might not turn on include:
How to fix it:
First, check that your outdoor unit is running. You can do this by going outside to your outdoor unit. You should see the fan spinning at the top of the condenser and hear the motor running. If you don’t, follow these steps to get your outdoor unit running again:
For your convenience, you can request an appointment in one of two ways: