Why is my AC system freezing up?

There are many reasons why your AC system freezes up in . Nearly all of them frequently need experienced AC repair.

Making sure the air filter is clean and airflow isn’t lowered are the only work you can safely take care of alone. If you need to put in a new the filter, you can hasten the thawing process by disabling the equipment and using the fan. If you have a heat pump, you can switch it to heat mode until the ice has disappeared.

After the ice melts, switch settings back to normal. If your unit freezes a second time, contact to repair the issue.

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

Insufficient refrigerant—Freezing up may be caused by a refrigerant leak.

What causes a leak?

  • Fragile solder joints
  • Grating from piping vibrating against other components
  • Broken valves
  • Unsecured fittings

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

Dirty evaporator coil—Over time, the evaporator coil becomes dirty and leads to troubles much like a clogged filter. You’ll gradually lose airflow until your unit freezes or quits cooling. You’ll need to contact to repair the problem.

Defective blower motor or relay—A blower motor working at an inaccurate speed or not turning on at all can cause freezing. It can also be irregular, starting at top speed and decelerating after it gets too hot. Or a relay might force it to start one time and not the subsequent time. In either state, you will need to call to fix the problem.

Scheduling yearly AC maintenance or heat pump maintenance may help you avoid this issue. Our professionals will fully inspect and clean your equipment, which usually allows us to locate little problems before they cause major issues.