What Causes my Air Conditioner to Freeze Up?

Why Air Conditioners Freeze Up

There are many reasons why your AC unit may be freezing up. Air conditioners need proper airflow to keep the cold coil warm. Warm air from the home is needed for the coil to stay cold and keep the temperature above freezing. Without it, coils freeze before the condensed water can be drained away from the unit. Since dirty air filters and closed air registers can impede airflow, it’s a good idea check the air filter and make sure the registers are both clear and open. A freeze up can also be caused by low refrigerant and improper fan operation. Low refrigerant levels make the coils too cold, and a faulty fan prevents air from moving.

Faulty thermostats and drainage problems are often causes of a freeze up. In the cooling process, an AC unit condenses water vapor into liquid that drains outside. If the coils are frozen, the ice will cause a blockage for the drain hole. The AC still runs, but doesn’t properly cool the home and uses a lot more electricity. If you have a window AC unit, you can use a hairdryer to unfreeze the coil. It’s also a good idea to check the drainpipe for any blockages, such as debris and twigs. Keep in mind that running an air conditioner with frozen coils can lead to extensive damage of the compressor. This is the most expensive part of an AC unit, and it’s not a repair or replacement that you want to face. If you’re unable to fix the frozen coil problem yourself, it’s always best to call a certified technician.

HVAC Repairs

At Custom Air & Plumbing, we fix all types of HVAC problems for businesses and residents, including AC freeze-ups. We know that the summers in Bradenton FL can be quite warm and respond quickly for HVAC repair. We’re always just a quick phone call away. As soon as you notify us, we will quickly dispatch a service technician. Your indoor comfort is our top concern.

We send our customers top-notch technicians. Our technicians are both factory trained and NATE certified. They also arrive equipped with cutting-edge tools for troubleshooting, diagnosing and repair. In addition to a expert repair, you can expect a 100 percent guarantee on all of our repair work.  Please contact us for more information on HVAC products, service and repair.

Compliance Settings
Increase Font Size
Simplified Font
Underline Links
Highlight Links