Why is my air conditioner blowing warm?

air conditioner blowing warmOne of the most common problems that can happen with AC units is that they stop cooling. Although this problem is common, the solution is not always the same. Sometimes it’s an easy fix that you can do on your own and other times you will need to call a professional.

But how do you know when a professional is needed? That’s what we’re here to help you with! Here’s a list of things to check on your own, before you enlist the help of a pro.

Check to see that the thermostat is not set to heat: Now I know this is an obvious one, but (perhaps because it’s SO obvious) you’d be surprised how many overlook this one. So before you start panicking, be sure to check that it is on the appropriate settings.
Is there any visible restriction of airflow? – Many people fail to keep up maintenance on the actual AC unit that’s located outside. Changing the air filter and cleaning the evaporator coil need to be regular maintenance activities in the summer time; Failure to do so seriously affects the cooling ability of your unit and can lead to the compressor freezing up. Make sure the filter is clean and that there is not dirt, leaves or other debris blocking the condenser coils airflow.
Is there a blown breaker switch? – Check to make sure that the circuit breaker hasn’t been tripped or that a fuse hasn’t been blown by the AC. This can be a sign of a bigger problem and you should contact a professional to take a look at it and make sure everything it ok.
Is it low on refrigerant? – This is one of the most common reasons for an AC unit to blow hot air. A refrigerant, usually Freon, is what cools the air in an AC unit, so if your ac is low on Freon it won’t produce cold air.
If your AC unit is blowing warm (or hot) air then most likely it’s a problem with the compressor (located in the outside unit) or it’s low on refrigerant. Another common cause of this problem could be a broken or disconnected return duct that is pulling in hot air from the attic or outside.

If your AC unit is blowing warm air and you need a professional to check it out, please visit our website to schedule a service call today, or call us at (281) 367-5267.


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