Frozen Air Conditioner Coil
Common Symptoms
Ice visible on indoor unit or refrigerant lines
Reduced or no airflow from vents
Water leaking when ice melts
AC running constantly but not cooling
Hissing sound from indoor unit
Possible Causes
Several factors can contribute to this problem. Understanding the cause helps determine the right solution.
1Dirty air filter blocking airflow
2Low refrigerant charge
3Blower motor failure
4Collapsed or blocked ductwork
5Dirty evaporator coil
6Running AC when outdoor temperature is low
What You Can Check First
Before calling a technician, try these simple checks that may resolve the issue.
1
Turn off AC immediately to allow defrost
2
Check air filter and replace if dirty
3
Verify all vents are open
4
Run fan only to speed defrosting
5
Check for any ductwork obstructions
When to Call a Professional
Ice returns after defrosting and filter change
Refrigerant leak suspected
Blower not running properly
Problem recurs frequently
Water damage from melting ice
Experiencing any of these situations?
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