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AC Repair

AC Freezing Up in the Middle of a Florida Summer? Here's Why

Published

Ice on your AC in August feels impossible, but a frozen evaporator coil is one of the most common summer service calls in Central Florida. The cause is almost always one of two things: airflow that is too weak to keep the coil above freezing, or refrigerant that is too low to keep its pressure up. Either way, the fix starts the same: turn cooling off now.

Do this first — before you call anyone

  • Set the thermostat to OFF for cooling, FAN to ON. The fan speeds up thawing; running the compressor on a frozen coil can destroy it.
  • Check the air filter. A clogged filter is the #1 cause — if it is gray, replace it.
  • Open every supply vent in the house, even in rooms you do not use.
  • Give it 2–4 hours to thaw. Put towels around the indoor unit; thawing coils drip more water than the drain pan expects.

If it freezes again, the airflow was not the problem

A second freeze-up after a fresh filter and full thaw points to low refrigerant from a leak, a failing blower motor, or a coil so caked with dirt it cannot breathe. All three need a tech: refrigerant work requires EPA certification, and a leak that is topped off without being repaired will freeze the coil again within weeks while quietly overworking the compressor.

What the repair usually costs

Airflow fixes are cheap: filters, coil cleaning, and drain clears run $125–$400. Leak repairs land between $500 and $1,500 depending on where the leak hides. See our full 2026 Orlando AC repair price guide for the complete breakdown.

The Florida twist: humidity makes it worse

Central Florida humidity means a frozen coil dumps far more meltwater than the same failure would in a dry climate — enough to overflow drain pans, trip float switches, and stain ceilings below second-floor air handlers. If you see water damage forming, shut the system down completely and get same-day service; the drywall repair costs more than the AC fix.

Frozen twice in one week? Book a same-day diagnostic or call (321) 463-7074. And if your system has pulled this trick two summers in a row, seasonal maintenance is the cheapest way to make it stop.