Guides / Updated 2026-08-02
Why your AC keeps icing up in Florida humidity
Ice on the copper line or a frozen coil is an airflow or charge problem. Running it anyway is how blowers and compressors die.
Check the filter first
A packed filter stops air from crossing the evaporator. The coil gets too cold, moisture freezes, and the ice spreads. Replace the filter. If the system is already a block of ice, turn it off and let it thaw before you restart.
If the filter was clean
Low refrigerant from a leak, a failing blower, or closed vents in too many rooms can do the same thing. That is a repair call. Do not keep adding gas every summer without a leak search.
While you wait
Set the fan to on only if the indoor coil needs help thawing, and do not run cooling mode on a frozen coil. Water from the melt should go to the drain, not into the drywall. If it does not, say so when you call.