Why is my AC system freezing up?

There are many reasons why your AC system freezes up.

Double-checking the air filter isn’t clogged and airflow isn’t decreased are the only work you can safely fix without professional help. If you need to replace the filter, you can accelerate the defrosting process by disabling the unit and using the fan. If you have a heat pump, you can move it to heat mode until the ice has melted.

After the ice disappears, switch settings back to normal. If your equipment freezes again, call Service Experts Heating & Air Conditioning to fix the malfunction.

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

Not enough refrigerant—Freezing up may be a result of a refrigerant leak.

What leads to a leak?

  • Fragile solder joints
  • Grating from piping vibrating against an object
  • Broken valves
  • Slack fittings

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

Filthy evaporator coil—Over time, the evaporator coil attracts dirt and causes troubles similar to a dusty filter. You’ll gradually receive lower airflow until your unit freezes or stops cooling. You’ll need to get in touch with Service Experts Heating & Air Conditioning to repair the issue.

Defective blower motor or relay—A blower motor running at an incorrect speed or not working at all can result in freezing. It could also be irregular, running at top speed and decelerating after it heats up. Or a relay could cause it to start one time and not the next. In either state, you will need to call Service Experts Heating & Air Conditioning to fix the problem.

Requesting yearly AC maintenance might help you avoid this problem. Our pros will meticulously inspect and clean your unit, which often allows us to locate little problems before they cause huge problems.

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