What Everyone Needs To Know About HVAC Systems

Help! What Should You Do When Your Air Conditioner Freezes?

by Amelia Martin

It can be a common spectacle to see ice on top of the air conditioner during some of the hottest days of summer. It is peculiar, but it can happen, and shouldn't be ignored. Here are some of the problems you can face during the dog days of summer and some of the solutions to those issues.

Turn It Off

If the air conditioning unit is frozen, you will need to let the system thaw out. The time to thaw can be as much as twenty-four hours. It is important to do all of the regular checks, but if the frozen indoor coil is frozen, it is acting like a clogged filter. Once the unit has thawed and a new filter is in place, you can check the system to see if it is cooling correctly.

Check the Airflow

Many factors can cause the air quality in the home to become hampered. It can begin with a dirty filter. Debris built up around the evaporator coil, or a damaged blower motor could be the culprit. It could also be an imbalanced fan causing the air flow problem. You should check under the home to see if any of the ductwork has become obstructed or have collapsed. You might have a family of rodents living in there.

Clean Filters and Coils

Your air conditioning unit requires some simple maintenance which could eliminate some of the freezing issues. It is advisable to clean or replace the filter monthly. Annually, the condensing coils will need to be cleaned to remove any dirt and debris that has collected on the coils. You can use a soft brush or a can of compressed air to remove the grime.  You should also check for any build-ups under the air conditioner and remove any low hanging limbs if they are hanging over the outside unit.

Check for Refrigerant Leaks

If enough refrigerant isn't available in the air conditioning unit, the pressure will drop on the evaporator coil and cause the moisture in the air to freeze. You should have a professional check the levels of the refrigerant to see if there might be a leak somewhere in one of the lines.

Purchase a New Thermostat

Freeze-ups can happen when the temperatures during the night are too low. Most outside air conditioning systems don't function as well if the temperature drops below 60 °F. It might be advisable to have a programmable thermostat installed to accommodate the HVAC unit to a higher setting during the nighttime hours.

These are the main issues you should need to pursue if your HVAC unit freezes this summer. If you aren't able to find the problem, it might be time to call in a team of professionals, like Augusta Mechanical Heating & Air Conditioning, for the chore.