Why is my AC system freezing up?

There are lots of reasons why your AC system freezes up.

Checking the air filter is clean and airflow isn’t decreased are the only things you can safely take care of on your own. If you need to replace the filter, you can hasten the defrosting process by disabling the system and using the fan. If you have a heat pump, you can switch it to heat mode until the ice is gone.

After the ice melts, move the temp back to normal. If your system freezes again, contact All American Air Service Experts to fix the problem.

Here are a couple other other reasons why your system might be freezing up.

Not enough refrigerant—A frozen system could be a result of a refrigerant leak.

What leads to a leak?

  • Weak solder joints
  • Grating from piping rubbing against other components
  • Cracked valves
  • Loose fittings

How long your system has been installed and the location of the leak play a part in whether you should repair or replace your AC system.

Dusty evaporator coil—As time passes, the evaporator coil becomes dirty and leads to issues resembling a dirty filter. You’ll gradually get lower airflow until your unit freezes or halts cooling. You’ll need to call All American Air Service Experts to take care of the problem.

Defective blower motor or relay—A blower motor running at an incorrect speed or not working at all can lead to freezing. It may also be intermittent, starting at top speed and going slower after it gets too hot. Or a relay could cause it to work one time and not the next. In either case, you will need to get in touch with All American Air Service Experts to correct the problem.

Booking regular AC maintenance could help you skip this issue. Our Experts will thoroughly check and clean your system, which typically allows us to locate little troubles before they cause major problems.

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