A frozen AC usually means your system isn’t getting enough airflow or it has low refrigerant. When the evaporator coil gets too cold, ice forms and your home stops cooling. Common Causes Low refrigerant Dirty air filter Dirty coils Blocked vents Blower motor issues What to Do Turn the system OFF , switch the fan ON , let the ice melt, and schedule a service call. Running it frozen can damage the compressor. How to Prevent It Change filters regularly Keep vents open Clean coil