Indoor Air Quality
Why Is My House Humid With the AC Running?
2026-07-19 5 min readBy Launch Air & Heating
Your AC is on but the air feels damp. Here's why — and how to finally fix Florida humidity.
Humid Air Even With the AC On?
It's a classic Florida frustration. Here's what's happening.
Your AC is oversized
An oversized unit cools the air quickly and shuts off before removing enough moisture.
Short run times
On mild or rainy days, the AC doesn't run long enough to dehumidify.
Dirty coil or low refrigerant
Both reduce the AC's ability to pull moisture from the air.
Leaky ducts
Ducts pulling in humid attic air add moisture back into your home.
The best solution
For persistent humidity, a whole-home dehumidifier controls moisture independently of cooling — the most reliable fix in our climate.