Frozen AC Coil Repair

A frozen evaporator coil is a symptom, not the disease. When airflow drops (dirty filter, blocked return, failing blower) or refrigerant runs low from a leak, the coil gets cold enough to ice over and the system stops cooling. We let it thaw safely, then correct the underlying airflow or refrigerant problem so the ice does not return.

Signs You Need This Service

• Visible ice or frost on the coil, lines, or outdoor unit
• AC blowing weak or warm air after running a while
• System cools, then quits, then cools again in cycles
• Higher power bills from an overworked, iced-up system

Common Causes

• Restricted airflow from a dirty filter, closed or blocked vents, or a failing blower motor, the most common trigger.
• Low refrigerant from a leak, which drops the coil temperature below freezing even with normal airflow.
• A dirty evaporator coil that insulates the surface and lets condensation freeze instead of draining away.
• Running the AC on an unusually cool night, which can tip a marginal system into freezing.

How We Handle It

1. Safely shut down and thaw the frozen coil
2. Inspect filters, return airflow, and the blower motor
3. Test refrigerant charge and check for leaks
4. Repair the root cause and confirm normal operation

Why This Happens in South Florida

Frozen coils are common in South Florida because our systems run so many hours that filters and coils load up with dirt quickly, and because refrigerant leaks have all summer to develop. When a hard-run system finally ices over, homeowners often keep running it in the heat, which is the worst thing to do: it can damage the compressor, the single most expensive part to replace. Catching the airflow or refrigerant cause early is far cheaper than the compressor failure it can lead to.