Why is my AC system freezing up?

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

Double-checking the air filter isn’t clogged and airflow isn’t decreased are the only things you can safely take care of alone. If you need to replace the filter, you can hasten the thawing process by turning off the system and using the fan. If you have a heat pump, you can move it to heat mode until the ice has melted.

After the ice melts, turn the temp back to normal. If your equipment freezes again, get in touch with Atmostemp Service Experts to correct the issue.

Here are a couple other other reasons why your equipment could be freezing up.

Not enough refrigerant—Freezing up can be created by a refrigerant leak.

What leads to a leak?

  • Fragile solder joints
  • Friction from piping vibrating against something
  • Ruptured valves
  • Unsecured fittings

How long your equipment has been working and the spot of the leak play a role in whether you should repair or replace your AC system.

Filthy evaporator coil—Over time, the evaporator coil gets dirty and causes issues much like a clogged filter. You’ll gradually lose airflow until your system freezes or quits cooling. You’ll need to call Atmostemp Service Experts to take care of the problem.

Broken blower motor or relay—A blower motor running at the wrong speed or not running at all can result in freezing. It could also be intermittent, starting at maximum speed and slowing down after it gets too hot. Or a relay might force it to start one time and not the next. In either case, you will need to contact Atmostemp Service Experts to correct the issue.

Booking annual AC maintenance can help you avoid this issue. Our pros will thoroughly check and clean your equipment, which usually allows us to locate minor troubles before they cause huge troubles.

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