Common HVAC Problem
Frozen AC Coils
Your HVAC system is telling you something. Here's what frozen ac coils means, why it happens, and how to fix it.
Signs You're Experiencing This
Ice visible on indoor unit
Ice on refrigerant lines
Reduced or no cooling
Water around indoor unit (after thaw)
System running but not cooling
What Causes Frozen AC Coils
1
Dirty air filter
2
Low refrigerant
3
Blocked vents
4
Fan not working properly
5
Dirty evaporator coil
6
Running AC when too cold outside
Try These Before Calling
Safe checks you can do yourself before scheduling a service call.
1
Turn system OFF immediately2
Set fan to ON to help thaw3
Check and replace air filter4
Check vents are open5
Wait 2-3 hours before restartingWhen to Call a Professional
- Ice returns after thawing
- Suspected refrigerant leak
- Filter was not dirty
- Happens repeatedly
- System makes strange sounds
Frozen AC Coils FAQ
Frozen AC Coils is commonly caused by: Dirty air filter, Low refrigerant, Blocked vents. Other factors include Fan not working properly and Dirty evaporator coil. A professional diagnosis can pinpoint the exact cause in your system.
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