Air Conditioner Line Freezing Outside

Dirty air filter or some air flow restriction.

Air conditioner line freezing outside. The most common cause of frozen acs is also the easiest to fix! Air conditioners need to have a constant flow of air so that humidity can’t settle on the coils and freeze. This is one of the most common causes for restricted air flow through your air conditioner.

When the airflow isn’t running smoothly, freon is not able to do its job. If the obstriction causing low airflow is not removed, the condensation will keep on freezing and accumulating until even the pipe outside is iced over. Your ac sucks the water out of the air, and it collects on the condensate coils.

The first step in repairing your air conditioning unit and preventing freezing is to inspect the cold air line for any tears or damage to the insulation. Thawing sometimes takes 2 to 3 hours. These are thin strips of metal that are easily bent.

With the power to the unit off, use a medium pressure hose to wash dirt from the fins in the outside unit. Your outside air conditioning refrigerant line is covered in ice—which seems crazy in arizona heat. Refrigerant piping or suction line ice & frost formation diagnosis & cure:

Your air conditioner’s blower fan helps get cold air where it needs to go and get the warm air outside. I have a central air conditioner that the cold line from the unit in the basement to the outside fan is freezing up with frost. I went outside to look at the compressor unit and discovered the exposed portion of the refrigerant line running into the house was frozen, but the fan was still running.

Clean the filter monthly to prevent this from being what causes an air conditioner to freeze. Blocked air flow causes freezing up. In order to keep the air flow in your own house moving enough to not disrupt your air conditioner’s functionality, you need to be sure your air filters aren’t dirty and becoming clogged.