Why Isn’t My Air Conditioner Working?
3 minutes read

Why isn’t my air conditioner working?

Published by Steven Weiland

Previously, we discussed how to check to make sure your A/C is working before those high temperatures hit Chicago. Aside from getting your air conditioning unit checked by a professional annually, we listed a few things you can do to ensure that your unit runs smoothly this summer. You’ll want to check for dirty filters, clean out your condenser, and test it out to know whether it’s working or not. But if your air conditioner still doesn’t work after all this is said and done, you may have a bigger problem on your hands. Below are some reasons that your air conditioner may not be working—all problems that Heatmasters would be happy to help with.


If you have central air, your air conditioner cools your home by blowing cold air through ductwork and out vents into your home. Sometimes, this ductwork can become cracked or bent due to either inadequate design, installation, wear and tear, or a variety of other factors. If this happens, a lot of the cold air that blows through the ducts may be escaping through gaps in the duct work which may be the reason your home is not getting cooled. If this is the case, you’ll need a professional to inspect and seal any damaged ductwork in your home.


Your condenser coil may also be the reason your air conditioning isn’t working properly. Sometimes coils stall due to a blown fuse or a tripped circuit breaker, even though the fan will continue to run. You may think the A/C is working since the fan is running, but the air is not actually getting cold. This often requires professional inspection to be diagnosed.


The refrigerant in an air conditioner is the liquid agent that are found in the condenser coil which make it possible to cool and dehumidify air. An air conditioning unit may leak refrigerant, especially if it is an older unit. If the unit leaks too much refrigerant over time, it may affect the function of the machine.


The other reason your air conditioner may not be working properly could have to do with your thermostat. Your A/C may be running but not cooling your home—this is when you’ll want to check your thermostat’s settings. When set to auto, the blower goes off and on according to the temperature you set. If on, the blower will run constantly no matter what temperature the thermostat is set to.

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