Why is my AC system freezing up?

There are a lot of reasons why your AC system freezes up.

Checking the air filter isn’t clogged and airflow isn’t restricted are the only work you can safely handle yourself. If you need to install a new the filter, you can hasten the defrosting process by turning off the unit and turning on the fan. If you have a heat pump, you can switch it to heat mode until the ice has disappeared.

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

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

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

What creates a leak?

  • Weak solder joints
  • Friction from piping vibrating against other components
  • Cracked valves
  • Unsecured fittings

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

Filthy evaporator coil—As time passes, the evaporator coil attracts dirt and causes issues resembling a dusty filter. You’ll gradually lose airflow until your equipment freezes or stops cooling. You’ll need to call Service Experts Heating & Air Conditioning to repair the problem.

Malfunctioning blower motor or relay—A blower motor working at an inaccurate speed or not working at all can create freezing. It may also be sporadic, running at top speed and decelerating after it gets warm. Or a relay may cause it to run one time and not the following time. In either situation, you will need to call Service Experts Heating & Air Conditioning to repair the trouble.

Requesting yearly AC maintenance may help you avoid this problem. Our professionals will thoroughly check and clean your equipment, which often allows us to find small problems before they become large problems.