Why is my AC system freezing up?

There are many reasons why your AC system freezes up.

Double-checking the air filter isn’t dusty and airflow isn’t decreased are the only things you can safely fix yourself. If you need to replace the filter, you can speed up the melting process by switching off the equipment and switching on the fan. If you have a heat pump, you can switch it to heat mode until the ice has melted.

After the ice disappears, move settings back to normal. If your system freezes repeatedly, get in touch with Service Experts Heating & Air Conditioning to correct the problem.

Here are a few other reasons why your system could be freezing up.

Low refrigerant—Freezing up could be a result of a refrigerant leak.

What causes a leak?

  • Weak solder joints
  • Resistance from piping jarring against other parts
  • Broken valves
  • Unsecured 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.

Dirty evaporator coil—Over time, the evaporator coil becomes dirty and creates troubles much like a dusty filter. You’ll slowly lose airflow until your equipment freezes or stops cooling. You’ll need to contact Service Experts Heating & Air Conditioning to fix the malfunction.

Malfunctioning blower motor or relay—A blower motor going at an inaccurate speed or not turning on at all can result in freezing. It can also be irregular, going at maximum speed and going slower after it heats up. Or a relay can force it to start one time and not the following time. In either case, you will need to get in touch with Service Experts Heating & Air Conditioning to fix the problem.

Requesting yearly AC maintenance may help you skip this problem. Our Experts will fully check and clean your unit, which usually allows us to discover minor issues before they cause huge problems.

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