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AC Water Leak Inside
in Pensacola, FL
Pensacola air holds a lot of moisture, and your AC pulls gallons of water out of the air every day during summer. All that water drains through a small pipe called the condensate drain line. When that line clogs, water backs up and spills into the overflow pan, and then onto your ceiling or floor. This is one of the most common calls we get from homeowners in neighborhoods like East Hill and Cordova Park.
Quick Answer
Water dripping from an indoor AC unit in Pensacola is usually a clogged condensate drain line. The drain line pulls humid air moisture out of the house, and in Pensacola's humidity, algae and mold grow in that line fast. A technician clears the clog and treats the line. Left alone, the overflow pan fills up and water damages drywall, flooring, and insulation.
Telltale Signs
Warning Signs to Watch For
- Water dripping from the ceiling near or below the air handler
- Water stains forming on drywall around the indoor unit
- A full or overflowing drip pan under the air handler
- Musty smell coming from the vents or the air handler area
- The system shuts off by itself due to a triggered float switch
- Standing water on the floor near the indoor unit
Root Causes
What Causes AC Water Leak Inside?
Clogged Condensate Drain Line
Algae and mold grow quickly inside condensate drain lines in Pensacola's heat and humidity. The buildup creates a plug in the line, and water that has nowhere to go fills the drain pan and overflows into the structure.
The Fix
Condensate Line Clearing and Treatment
The technician flushes the drain line with a wet vacuum and treats it with an algaecide tablet to slow regrowth. Doing this once a year during a maintenance visit prevents most overflows.
Cracked or Rusted Drain Pan
The overflow pan sits below the evaporator coil and is the last defense against water damage. Homes in Pensacola built in the 1970s and 1980s often have metal pans that rust through, or older plastic pans that crack from years of heat cycles.
The Fix
Drain Pan Replacement
A cracked or rusted pan cannot hold water regardless of how clear the drain line is. Replacing the pan is a straightforward fix that stops the leak at the source.
Frozen Coil Thawing
When a frozen evaporator coil thaws, it releases a large amount of water at once. This overwhelms the drain line and pan. Pensacola's high humidity means a thawing coil can dump more water than the drain system is sized to handle quickly.
The Fix
Coil Freeze Diagnosis and Repair
Stopping the freeze-up stops the flooding. The technician finds what caused the coil to freeze, whether that is a dirty filter, low refrigerant, or a dirty coil, and fixes the root problem.
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 | Cracked or Rusted Drain Pan | Frozen Coil Thawing |
|---|---|---|---|
| Slow drip from the unit that has been going on for days | |||
| Drain pan is visibly rusted or has a crack in the bottom | |||
| Large amount of water appeared suddenly after the system thawed | |||
| System shut off on its own and a float switch is tripped | |||
| Musty smell from vents along with slow leak |
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