Why is my AC system freezing up?

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

Checking the air filter isn’t clogged and airflow isn’t decreased are the only tasks you can safely handle yourself. If you need to put in a new the filter, you can speed up the melting process by disabling the equipment and turning on the fan. If you have a heat pump, you can turn it to heat mode until the ice is gone.

After the ice melts, switch the temperature back to normal. If your equipment freezes a second time, call Kingston Home Services by Enercare to correct the problem.

Here are several other reasons why your unit might be freezing up.

Insufficient refrigerant—A frozen system may be a result of a refrigerant leak.

What causes a leak?

  • Fragile solder joints
  • Friction from piping vibrating against other parts
  • Ruptured valves
  • Loose fittings

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

Dusty evaporator coil—As time passes, the evaporator coil gets dirty and leads to issues similar to a dusty filter. You’ll gradually get lower airflow until your system freezes or quits cooling. You’ll need to contact Kingston Home Services by Enercare to repair the problem.

Defective blower motor or relay—A blower motor going at an incorrect speed or not working at all can create freezing. It may also be irregular, starting at top speed and going slower after it gets too hot. Or a relay could make it start one time and not the following time. In either case, you will need to contact Kingston Home Services by Enercare to correct the problem.

Booking regular AC maintenance might help you bypass this malfunction. Our professionals will meticulously examine and clean your system, which often allows us to locate little troubles before they become huge problems.