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AC Leaking Water Inside
in Fort Lauderdale, FL
Fort Lauderdale air carries a lot of moisture. On a typical summer day, a home AC system pulls one to three gallons of water out of the air every hour. That water drains through a condensate line, and when that line clogs, the water backs up and overflows inside your home. Left alone, you get water-stained ceilings, warped floors, and mold growing inside the air handler.
Quick Answer
Water leaking from your indoor AC unit usually means a clogged condensate drain line. Fort Lauderdale's humidity means your system pulls gallons of water out of the air every day, and that water needs somewhere to go. A tech can clear the drain line and treat it to slow future clogs. Catch it early or the water damages drywall, flooring, and insulation. Call (754) 354-3070 before it gets worse.
Telltale Signs
Warning Signs to Watch For
- Water pooling on the floor under the indoor air handler
- Water stains on the ceiling below a second-floor air handler
- Musty or moldy smell coming from the vents
- The AC shuts itself off before the house cools down
- Visible rust or water streaks on the outside of the air handler cabinet
Root Causes
What Causes AC Leaking Water Inside?
Clogged Condensate Drain Line
The condensate drain line carries water from your air handler to the outside or a floor drain. Algae and mold grow fast in that line in Fort Lauderdale's heat. Without regular treatment, the line plugs up completely within a few months in summer.
The Fix
Condensate Drain Line Flush and Treatment
A tech blows out the clog with compressed air or a wet vac, then flushes the line with a diluted algaecide. Pouring a small amount of bleach solution into the drain port every few months keeps it clear.
Frozen Evaporator Coil Thawing
When the evaporator coil freezes over, ice builds up on it. When the system shuts off, that ice melts all at once and floods the drain pan faster than the drain can handle. Coils freeze when airflow is blocked or refrigerant is low, both of which are common in older Broward County homes with undersized return ducts.
The Fix
Coil Cleaning and Airflow Correction
A tech clears whatever caused the freeze, whether that's a dirty coil, a clogged filter, or a refrigerant issue, and checks that the drain pan and line can handle normal drainage. Fixing the root cause stops the freezing and the flooding.
Cracked or Rusted Drain Pan
The drain pan sits under the evaporator coil and catches condensation before it reaches the drain line. In systems more than 10 years old, the pan rusts through or cracks. Fort Lauderdale's constant humidity keeps that pan wet year-round, which speeds up rust on steel pans.
The Fix
Drain Pan Replacement
A tech pulls the old pan and installs a new one, usually plastic, which won't rust. It's a straightforward fix that stops the leak for good as long as the drain line stays clear.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | Clogged Condensate Drain Line | Frozen Evaporator Coil Thawing | Cracked or Rusted Drain Pan |
|---|---|---|---|
| Steady drip from air handler even when AC is running normally | |||
| AC shuts off on its own, then water appears when it restarts | |||
| Large amount of water all at once after AC shuts off | |||
| Rust-colored water staining the floor below the unit | |||
| Slow drip that gets worse in summer months |
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