Why is my AC system freezing up?

There are a lot of reasons why your AC system freezes up.

Making sure the air filter isn’t dirty and airflow isn’t decreased are the only work you can safely fix without professional help. If you need to put in a new the filter, you can speed up the thawing process by turning off the unit and using the fan. If you have a heat pump, you can turn it to heat mode until the ice is gone.

After the ice is gone, switch settings back to normal. If your equipment freezes again, get in touch with Becht/Givens Service Experts to correct the problem.

Here are a couple other other reasons why your unit could be freezing up.

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

What creates a leak?

  • Fragile solder joints
  • Resistance from piping vibrating against other components
  • Ruptured valves
  • Slack fittings

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

Dirty evaporator coil—As time passes, the evaporator coil gets dirty and creates issues resembling a dusty filter. You’ll progressively lose airflow until your equipment freezes or halts cooling. You’ll need to call Becht/Givens Service Experts to take care of the problem.

Broken blower motor or relay—A blower motor working at an inaccurate speed or not turning on at all can result in freezing. It may also be irregular, running at full speed and slowing down after it gets too hot. Or a relay can force it to run one time and not the next. In either situation, you will need to call Becht/Givens Service Experts to correct the trouble.

Scheduling yearly AC maintenance might help you bypass this issue. Our professionals will meticulously inspect and clean your system, which usually allows us to discover small issues before they become major problems.

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