Why is my AC system freezing up?

There are lots of reasons why your AC system freezes up.

Making sure the air filter isn’t clogged and airflow isn’t restricted are the only tasks you can safely handle yourself. If you need to install a new the filter, you can speed up the defrosting process by disabling the system and using the fan. If you have a heat pump, you can turn it to heat mode until the ice has melted.

After the ice is gone, turn the temperature back to normal. If your system freezes a second time, get in touch with Service Experts Heating & Air Conditioning to correct the problem.

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

Not enough refrigerant—Freezing may be caused by a refrigerant leak.

What creates a leak?

  • Weak solder joints
  • Resistance from piping jarring against other parts
  • Broken valves
  • Loose fittings

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

Filthy evaporator coil—Throughout the seasons, the evaporator coil attracts dirt and leads to problems resembling a dirty filter. You’ll gradually receive lower airflow until your unit freezes or halts cooling. You’ll need to get in touch with Service Experts Heating & Air Conditioning to repair the problem.

Defective blower motor or relay—A blower motor going at an inaccurate speed or not running at all can result in freezing. It may also be intermittent, starting at top speed and going slower after it heats up. Or a relay can make it work one time and not the next. In either situation, you will need to contact Service Experts Heating & Air Conditioning to fix the issue.

Booking regular AC maintenance may help you avoid this malfunction. Our technicians will thoroughly check and clean your equipment, which frequently allows us to find little issues before they turn into huge troubles.

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