Stop cooling
Set the thermostat to Off. Let the ice thaw without chipping or scraping the coil.
Tropicool Answers · St. Augustine, FL
Frozen AC Coil
Ice on an indoor coil or refrigerant line is a symptom of a system problem. Continuing to run cooling can make it worse.
Start here
Three useful checks
Check basic airflow
Look at the filter and make sure return and supply openings are not blocked. A dirty filter is useful information for the technician.
Describe the pattern
Note when cooling weakened, whether airflow dropped and whether water appeared as the ice thawed.
When to stop and call
Do not restart cooling repeatedly after ice returns. Arrange a diagnosis before using the system normally.
Tropicool Answers
Frequently asked questions
Can I melt the ice with heat?
Let the system thaw naturally. Do not use heat or tools on the coil.
Does a frozen coil always mean low refrigerant?
No. Restricted airflow and other issues can also cause freezing. Testing identifies the cause.
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