Why is my AC system freezing up?

There are many reasons why your AC system freezes up.

Checking the air filter is clean and airflow isn’t lowered are the only tasks you can safely fix alone. If you need to replace the filter, you can hasten the thawing process by turning off the unit and using the fan. If you have a heat pump, you can move it to heat mode until the ice has disappeared.

After the ice disappears, move the temp back to normal. If your equipment freezes a second time, get in touch with Bob Brown Service Experts to correct the issue.

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

Insufficient refrigerant—Freezing may be created by a refrigerant leak.

What creates a leak?

  • Weakened solder joints
  • Friction from piping rubbing against other parts
  • Broken valves
  • Loose fittings

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

Filthy evaporator coil—Over time, the evaporator coil attracts dirt and causes problems resembling a clogged filter. You’ll gradually get lower airflow until your unit freezes or halts cooling. You’ll need to get in touch with Bob Brown Service Experts to take care of the problem.

Defective blower motor or relay—A blower motor running at the wrong speed or not turning on at all can create freezing. It can also be sporadic, starting at full speed and going slower after it gets warm. Or a relay might make it work one time and not the next. In either case, you will need to contact Bob Brown Service Experts to correct the trouble.

Requesting annual AC maintenance could help you bypass this problem. Our pros will fully inspect and clean your equipment, which often allows us to locate small troubles before they cause large troubles.