AC leaks, answered 24/7
Air conditioner leak water damage in Los Angeles homes
An air conditioner pulls gallons of water out of the air on a hot day. When the drain line clogs or the pan overflows, that water goes into the ceiling or the closet floor instead.
- Answered 24/7
- Attic and closet air handlers
- Summer ceiling leaks
Updated September 2026
24/7 emergency line
(323) 709-0141- 1Turn the AC offAt the thermostat.
- 2Bucket under the dripCircuit off if near a light.
- 3We dry and traceCeiling, attic, closet.
Quick answer
AC leak water damage in Los Angeles usually comes from a clogged condensate drain line or an overflowing drain pan under an attic or closet air handler, often during a heat wave. Turn the system off at the thermostat, then we dry the ceiling, insulation and floor, and note the drain fix for your HVAC technician.
What you might notice
Signs your AC is leaking
Ceiling stain near the hatch
Or below the air handler.
Water around the closet unit
On the floor or carpet.
Dripping from a vent
Water at a supply register.
AC shut off on its own
A float switch tripped.
Musty air when it runs
Damp insulation or pan.
Ice on the lines
Frost on the copper at the unit.
Warm air from vents
Often with a frozen coil.
How the job runs
How an AC leak job runs
WetDry and signed off
- 1
System off
Thermostat off so no more water forms.
- 2
Protect the room
Belongings moved, bucket down.
- 3
Check the attic
Pan, line and wet insulation.
- 4
Remove what cannot dry
Wet insulation and sagging drywall.
- 5
Dry above and below
Attic and room equipment.
- 6
Confirm dry
Readings logged to dry.
- 7
Repair and hand off
Ceiling rebuilt; notes for HVAC.
The job
Where the water comes from
Cooling pulls moisture from the air, and it drips off the evaporator coil into a pan and out through a small drain line. On a hot day that can be gallons.
Algae and dust clog that line. The pan fills, the backup pan fills, and water spills onto the ceiling below or the closet floor.
Variations of this job
Condensate drain line clog
A condensate drain line clog is the most common cause. Algae and dust build up in the small PVC line until water backs up into the pan. In a closet unit it spills onto the floor; in the attic it soaks insulation and the ceiling below. We extract and dry the affected area, check whether a float switch should have shut the system off, and leave notes for the HVAC technician, who clears the line and sets it up to stay clear. Closet carpet and pad that soaked are usually replaced.
Attic drain pan overflow
An attic drain pan overflow happens when the secondary pan under an attic air handler fills because its own drain is blocked or the pan has rusted through. The ceiling below takes the water, usually in a hallway or bedroom near the attic hatch. We go into the attic, pull wet insulation, dry the ceiling joists and drywall from above and below, and open any ceiling section that sagged. Rusted pans are noted for replacement, and the attic is photographed for your file before insulation goes back.
Frozen evaporator coil drip
A frozen evaporator coil drip happens when low airflow or refrigerant problems let ice build up on the coil. When the system cycles off, the ice melts faster than the drain can carry it away, and water overflows around the unit. It often follows a clogged filter. We dry the damage and tell you what we saw, since the cause is an HVAC repair: a new filter, a blower issue or a refrigerant check. Until then, running the system just repeats the overflow.
Los Angeles conditions
Heat waves push AC systems hardest
Valley heat is where AC leaks cluster. On September 6, 2020, Woodland Hills reached 121 degrees, the highest temperature ever recorded in Los Angeles County, and Burbank tied its all-time record of 114 the day before. Air conditioners running flat out for days produce the most condensate and expose any drain line that was half clogged, which is why these calls come in during the hottest weeks.
Do it yourself or call
What you can do yourself
A few steps are safe for homeowners. The attic usually is not.
| What you can do | What we handle | |
|---|---|---|
| Water dripping | Thermostat off, bucket down | Dry ceiling and attic |
| Clogged filter | Replace the filter | Check for frozen coil damage |
| Drain line stub outside | Wet-vac the outlet if reachable | Notes for the HVAC fix |
| Sagging ceiling | Keep everyone out from under it | Controlled drain and cut-out |
Cost factors
What AC leak damage costs
2026 guides put water damage restoration at $3 to $7.50 per square foot, and rebuild work like drywall and paint at $20 to $37 per square foot. The HVAC drain repair is a separate line. Planning ranges only.
Ceiling area
Wet drywall dried or replaced.
Attic insulation
Wet batts or blown insulation removed.
Closet flooring
Floors around closet air handlers.
How long it leaked
One overflow versus weeks of drips.
Access
Tight attics take longer.
Rebuild
Texture match and paint.
FAQ
AC leak questions
Usually a clogged condensate line or an overflowing pan. A frozen coil can also cause it.
Yes, at the thermostat, until the drain is cleared.
We handle the water damage; an HVAC technician fixes the drain or coil.
Sudden overflows sometimes are; ongoing drips from maintenance usually are not.
Often, if caught early and it has not sagged.
Change filters, have the drain line cleaned yearly, and fit a float switch.
Related work
Related work from the same call
Emergency Water Damage Restoration
24 hour water damage cleanup
Emergency Water Damage RestorationBurst Pipe Cleanup
Supply line failure
Burst Pipe CleanupCeiling and Roof Leak Water Damage
Sagging ceiling
Ceiling and Roof Leak Water DamageSlab Leak Water Damage
Hot spot on floor
Slab Leak Water DamageAppliance Leak Cleanup
Water heater leak
Appliance Leak CleanupAC dripping into the ceiling?
Turn it off at the thermostat and call. We will dry it before it spreads.
24/7 emergency line
(323) 709-0141