Humidity. No stranger to Florida.

What it usually is

The system is too big

It cools fast & shuts off before it pulls the water out. Common on houses where somebody "went up a size to be safe." The fix is right sizing at replacement, or a variable speed system that runs long & slow.

Leaky return ducts

A return pulling attic air pulls attic humidity. We pressure test & seal.

Running it too cold

Keep it 72 & up. It's Florida, it'll get there.

A variable speed system

Sometimes the real fix is the equipment. A variable speed system runs long & slow instead of blasting & stopping. The coil gets very cold, the air moves across it slowly, & the water in that air condenses on the coil & goes down the drain instead of back into the room. One of our customers went from 67% to 49% with a 17 SEER Trane, same thermostat setting, same house.

It actually needs a dehumidifier

Some houses do. A whole house unit on the return, drained to the condensate line, set to 50. We say this one last, not first.