It’s an unusual sight to walk outside into the heat only to find your air conditioner caked in ice.
There are a few possible causes of why your air conditioner has frozen and is no longer pumping that cooling goodness into your home.
Poor Air Circulation
The first possible cause could be that there is poor air circulation in your air conditioning unit. If there is restricted airflow around your A/C system’s evaporator coil, this will cause the temperature in the system to drop well below freezing.
The restriction in airflow could be caused by:
· A dirty air filter
· Clogged ducts
· Inefficient blower motors
· Debris built up on the all-important evaporator coil.
The second possibility is a refrigerant leak or low levels of refrigerant in the line. The decrease of air pressure in the evaporator coil will cause the humidity in the air to freeze over the coil. The line where the refrigerant is distributed needs to be undisturbed so that is can be evenly moved throughout the system, therefore the moisture in the air won’t collect over one portion of the line and freeze.
Using the A/C, Even When Temperatures Drop Overnight
Lastly, if you are running your air conditioner during cool nights which are generally around the 60°F mark, there is a strong possibility that the internal systems of your A/C could freeze up overnight. It’s recommended that when the temperature hits 60°F at night to avoid running the air conditioner as much as possible to avoid any freezing issues.
What to do When Your AC Unit is Frozen
Here are some steps to troubleshoot the problem:
1. Immediately switch off the unit and let it defrost
2. Make sure that there is nothing restricting airflow to the system
3. Change the air filter, if needed
4. Open all of the registers around your home
5. Double check that nothing is obstructing return vents, like drapes or other furniture
After it has thawed out and you notice that your air conditioning system is still not functioning properly, give us a call at 405.243.1613!