Problem
Ice forms on the AC unit or evaporator coil.
Possible Causes
- Restricted airflow
- Dirty air filter
- Low refrigerant levels
- Blocked return vents
How To Fix It
- Turn off the system to allow ice to melt
- Replace the air filter
- Make sure vents are open and unobstructed
When To Call A Professional
If freezing continues after airflow issues are corrected, refrigerant levels may need inspection.