Why is my AC system freezing up?

There are many reasons why your AC system freezes up.

Double-checking the air filter is clean and airflow isn’t decreased are the only tasks you can safely take care of alone. If you need to install a new the filter, you can speed up the defrosting process by turning off the unit and switching on the fan. If you have a heat pump, you can move it to heat mode until the ice has disappeared.

After the ice melts, move the temperature back to normal. If your system freezes again, get in touch with Bryant Heating & Cooling Service Experts to fix the problem.

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

Insufficient refrigerant—Freezing up may be a result of a refrigerant leak.

What causes a leak?

  • Fragile solder joints
  • Resistance from piping rubbing against other components
  • Cracked valves
  • Slack fittings

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

Dirty evaporator coil—As time passes, the evaporator coil gets dirty and causes troubles similar to a clogged filter. You’ll slowly get lower airflow until your system freezes or quits cooling. You’ll need to get in touch with Bryant Heating & Cooling Service Experts to fix the issue.

Defective blower motor or relay—A blower motor working at the wrong speed or not working at all can cause freezing. It may also be irregular, starting at top speed and decelerating after it gets too hot. Or a relay could force it to start one time and not the next. In either situation, you will need to call Bryant Heating & Cooling Service Experts to correct the problem.

Scheduling annual AC maintenance might help you bypass this issue. Our technicians will comprehensively examine and clean your system, which usually allows us to discover little issues before they cause large issues.

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