Why is my AC system freezing up?

There are many reasons why your AC system freezes up.

Checking the air filter isn’t dirty and airflow isn’t restricted are the only work you can safely take care of on your own. If you need to put in a new the filter, you can accelerate the defrosting process by turning off the system and turning on the fan. If you have a heat pump, you can move it to heat mode until the ice has disappeared.

After the ice disappears, turn settings back to normal. If your unit freezes repeatedly, get in touch with McElroy Service Experts to correct the problem.

Here are a couple other other reasons why your equipment may be freezing up.

Low refrigerant—Freezing could be created by a refrigerant leak.

What leads to a leak?

  • Fragile solder joints
  • Grating from piping vibrating against an object
  • Cracked valves
  • Unsecured fittings

How long your equipment has been working and the area of the leak determine whether you should repair or replace your AC system.

Dusty evaporator coil—Over time, the evaporator coil becomes dirty and leads to troubles resembling a clogged filter. You’ll slowly receive lower airflow until your system freezes or stops cooling. You’ll need to contact McElroy Service Experts to take care of the malfunction.

Defective blower motor or relay—A blower motor working at an inaccurate speed or not working at all can lead to freezing. It could also be intermittent, starting at maximum speed and slowing down after it heats up. Or a relay can make it start one time and not the next. In either case, you will need to contact McElroy Service Experts to fix the trouble.

Booking annual AC maintenance can help you bypass this issue. Our professionals will meticulously check and clean your equipment, which frequently allows us to locate small troubles before they turn into major troubles.

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