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 lowered are the only work you can safely fix yourself. If you need to replace the filter, you can hasten the melting process by turning off the unit and turning on the fan. If you have a heat pump, you can move it to heat mode until the ice is gone.

After the ice disappears, switch settings back to normal. If your system freezes repeatedly, get in touch with Stark Services to correct the malfunction.

Here are a few other reasons why your unit may be freezing up.

Low refrigerant—A frozen system may be caused by a refrigerant leak.

What causes a leak?

  • Weakened solder joints
  • Friction from piping vibrating against an object
  • Ruptured valves
  • Slack fittings

How long your unit has been installed 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 leads to troubles resembling a clogged filter. You’ll progressively receive lower airflow until your unit freezes or quits cooling. You’ll need to contact Stark Services to take care of the issue.

Broken blower motor or relay—A blower motor running at an incorrect speed or not turning on at all can result in freezing. It may also be irregular, going at full speed and going slower after it heats up. Or a relay may make it run one time and not the next. In either state, you will need to call Stark Services to repair the problem.

Scheduling yearly AC maintenance might help you bypass this malfunction. Our Experts will comprehensively check and clean your unit, which frequently allows us to discover minor issues before they cause large issues.