Finding water around the indoor unit is unsettling, but it is also one of the most common AC complaints in Florida homes, and the usual cause is cheap to fix. Your air conditioner is a dehumidifier as much as a cooler: on a humid Treasure Coast day it can pull many gallons of water out of the air, and all of it has to leave through one small drain line. When that path clogs, the water finds another way.
First, limit the damage
- Turn the system off at the thermostat. Every minute it runs, it makes more water.
- Soak up the standing water, especially near drywall, baseboards, and flooring seams.
- Look at where the water starts. Is it dripping from the unit itself, overflowing a pan under it, or backing up at a wall or garage drain fitting?
Cause 1: a clogged condensate drain line
The clear PVC line that carries condensate outside grows algae and sludge year-round in Florida warmth. When it clogs, the drain pan fills and overflows. Signs point here if the unit cools fine but water pools below or beside it. Many Florida systems have a float switch that shuts the AC down before the pan overflows, so a system that mysteriously stopped cooling AND has water nearby is practically announcing a clogged drain.
If you are comfortable doing so, you can try a homeowner-safe fix: find the drain access tee near the air handler and pour in a cup of distilled vinegar, or use a wet/dry vacuum on the outside end of the drain line to pull the clog through. Our maintenance checklist covers the routine that keeps the line clear in the first place.
Cause 2: a frozen evaporator coil thawing out
If the water appears after the system ran poorly, and especially if you saw ice on the copper lines, the puddle is meltwater. Ice on a Florida AC means an underlying problem: starved airflow from a dirty filter, or low refrigerant from a leak. The filter you can check yourself. Refrigerant is licensed-pro territory by law, and it is a job for a licensed repair contractor either way, because running a freezing system risks the compressor.
Cause 3: a rusted or cracked drain pan
Common on systems past their first decade, and more common near salt air, where corrosion works on everything metal, as we cover in the coastal corrosion guide. A failed primary pan on an older system often turns into a broader conversation about the unit's remaining life.
When to stop and get a pro
Homeowner-safe: thermostat off, cleanup, filter check, vinegar or a shop vac on the drain line. Licensed-pro territory: refrigerant, electrical, coil access, pan replacement, and any leak that returns after you have cleared the drain.
Water damage compounds quietly, so a leak that comes back deserves a same-week visit, not a someday one. Tell us what you found and we connect you with a licensed, insured local contractor fast. Send the quick form or call (772) 266-5463.
Trade Winds Air is a referral service, not a contractor. Cost figures above are general published ranges for educational purposes; every real number comes from the licensed, insured contractor who inspects your system.