Drying and cleanup when a clogged AC drain line or overflowing pan soaks attic insulation and a ceiling.
Fastest: call (833) 490-5225. Or send this and we call you back.
An air conditioner pulls water out of the air, and when its drain line clogs or the pan overflows, that water ends up in the attic and ceiling. Switch the system off at the thermostat, then call Celina Water Damage Restoration. A crew is dispatched as fast as one is available to dry what got wet. An HVAC technician fixes the drain.
Every air conditioner makes water. As warm indoor air crosses the cold evaporator coil, moisture condenses on it and runs into a pan, then out through a drain line. During a Texas summer that can be gallons a day, and the whole system depends on a small plastic pipe staying open. When it clogs, the water has to go somewhere.
In many two-story homes the air handler sits in the attic, directly above a drywall ceiling. A backed-up line or a rusted-out or overflowing pan lets the water soak insulation and the top of the drywall for hours, sometimes days, before a stain shows. A downstairs ceiling, a hallway or a closet is where most homeowners first see it, usually after the system has been running hard for a while.
The restoration crew does not repair the air conditioner. It handles the water: it finds how far it spread, removes wet insulation and drywall that cannot dry, and runs drying equipment until the readings come down. Clearing the drain line, replacing a pan or servicing the unit is an HVAC technician's work, and it should happen quickly, because a system left running will refill the same pan.
Turn the air conditioner off at the thermostat, so it stops making water. Keep everyone out from under a bulging ceiling, move belongings, take photos, and call (833) 490-5225. Then book an HVAC technician to clear the drain line. Do not run the system again until the drain is working.
If the air handler is in a garage or a closet and you can see the pan, a wet-dry vacuum can pull standing water out of it. Do not climb into a hot attic to do it, and do not touch the unit's wiring.
The reason for shutting it off is simple: a running system keeps producing water, and a clogged line has nowhere to send it. Turning it off stops the damage growing while you wait.
Summer cooling can run for months, so the drain line carries water nearly every day, and algae and debris have a long season to build up. A line that is only slightly narrowed in May can be blocked by August. It is a general seasonal pattern, not a measured rate.
Warm, humid air produces more condensate. A system that is oversized, has a dirty coil or is low on refrigerant can change how much water it makes, and a technician can tell you whether the leak is a clog or a symptom of something else.
Because the water often travels through attic insulation before it shows, homeowners tend to notice it late. A stain that appears after a few hot days has often been building for longer than that.
Condensate is usually treated as clean water at first, but it passes over a coil and pan that can carry dust, algae and debris, and it soaks insulation and drywall. Mold can grow in damp materials even when they are later dried, so a persistent smell or spotting deserves an assessment.
The EPA's 24 to 48 hour figure is a guideline for drying water-damaged materials, not a promise that mold cannot start. Hot attics and sealed, tightly built homes can keep moisture trapped, so the crew checks readings rather than going by how the room feels.
If mold is suspected, Texas treats assessment and remediation as separately licensed work through the Texas Department of Licensing and Regulation. The mold inspection page explains the assessment step, and the Texas mold rules guide explains the 25-square-foot licence threshold.
It depends on your policy and on how the leak happened. Many policies cover sudden and accidental water damage but not long-term leakage or a maintenance failure, and a home under a written builder warranty may have separate coverage for the HVAC system. Ask your insurer and check your builder's paperwork.
Texas law recognizes written builder warranties with minimum coverage periods for plumbing, electrical and cooling delivery systems, but each builder's own written terms are what apply to you. Call the builder as well as your insurer if the home is new.
The crew cannot decide coverage. It can give you moisture readings, photos and a list of removed materials for the claim.
Do not enter a hot attic to inspect the unit. Heat, loose insulation and a weak ceiling are real hazards, and the air handler has live wiring. Turn the system off at the thermostat and leave the attic work to the HVAC technician and the crew.
The air conditioner is switched off at the thermostat so it stops making more condensate. If you can safely see the pan, clear water that is standing in it, and keep people out from under a sagging ceiling.
The crew traces the water from the unit through the insulation, along joists and across the drywall below. Moisture meters and a thermal camera show wet zones that have not stained yet.
Soaked blown-in or batt insulation holds water against the drywall. The crew removes it, and cuts out ceiling board that has sagged or softened, with your approval.
Air movers and dehumidifiers go in, and the attic is dried as well as the room below. Attic spaces can run hot and humid, so readings are re-checked until the framing is back to a dry reference.
You receive moisture readings and photos you can share with your insurer. Ceiling, insulation and paint repair is quoted separately once the drying is done.
Algae, sludge and debris can block the small drain line over a season. Water backs up in the primary pan, spills over and soaks the insulation. This is the most common version and is fixed by an HVAC technician clearing the line.
Many attic installations have a second pan under the unit with its own drain. If that drain is blocked too, or the pan has rusted through, the overflow reaches the ceiling. Some units have a float switch that shuts the system off, but a failed switch cannot do its job.
A small, steady leak from a loose fitting or a bad connection may never trigger an overflow. It wets the same patch of insulation and drywall day after day, so these jobs often have deeper staining and a higher chance that mold has started.
No published price exists for condensate cleanup as its own category, so the crew prices it from the same pieces as other clean-water jobs: how much water has to come out, how many rooms or cavities need drying, and for how many days. The ranges below are regional estimates for context only.
| Job | Typical range | What it includes |
|---|---|---|
| Water extraction, limited clean-water loss | $500–$1,500 | A small, caught-early leak |
| Drying and dehumidifying | $700–$2,000 | More for attics and multiple rooms |
| Category 1 (clean) water, per sq ft | about $3–$4 | Condensate that has picked up dirt or insulation fibers may be priced higher |
| Dehumidifier, per unit per day | $65–$150 | Large-capacity LGR units sit at the upper end |
| Drywall replacement including finishing, per sq ft | $3–$8 | Repair work, quoted after drying |
These are estimates for the Celina and north Collin County area in 2026, based on wide regional ranges. Your exact price is explained and approved before work starts. The HVAC repair is a separate bill, and coverage is decided by your insurer.
Call any hour and explain what is going on. You get a clear price before any work starts.
Newer homes around Celina, Prosper and Anna tend to be built with the air handler in the attic of a two-story house, over the ceilings of the bedrooms and hallways below. That is a common arrangement in this kind of construction, not a count, and it explains why a small drain problem often becomes a ceiling problem.
Summer in North Texas is hot and humid, and the air conditioner runs for months. A secondary pan with a float switch is a useful safeguard, but it only works if someone has tested it. A yearly check with an HVAC technician before the cooling season is a practical way to catch a narrowed drain line.
In a Light Farms or Craig Ranch style subdivision with an HOA, check the association's rules before putting anything on the roof or the exterior, though interior drain work normally does not touch them.
Draining, drying and cleanup when water from an upstairs leak or attic source soaks a drywall ceiling.
Air movers, dehumidifiers and daily moisture readings that dry walls, cabinets and floors after the water is removed.
Water removal, monitored drying and cleanup for slab-on-grade homes and businesses in Celina and north Collin County.
Moisture mapping after a leak, and a plain explanation of Texas mold assessment licensing before you hire anyone.
Not sure if you're covered? Check your ZIP code.
An HVAC technician clears the drain line, replaces a pan or repairs the unit. The restoration crew removes the water, takes out wet insulation and drywall and dries the home. The two trades work best when both are booked early.
It is better not to. A running system keeps making condensate, and a blocked drain sends it into the ceiling. If it is very hot, run a fan and keep windows shut. Turn the air conditioner back on once the drain is cleared.
Stains that grow only when the system runs, that sit near the air handler or follow the duct path point to condensate. A stain that grows when someone showers or runs the washer points to plumbing. A meter and camera can confirm it.
Often, yes. Wet blown-in insulation clumps, holds water against the drywall and dries slowly. Light, localized wetting may be dried in place, but the crew uses readings to decide, and removal is done with your approval.
No. The water comes from the air, not from your water line, so your meter will not move. That is one way to tell it apart from a supply line leak, which shows up as a meter that keeps running.
Have an HVAC technician clear and test the drain line and the float switch before summer, and check the pan now and then if it is accessible. Add the drain check to your yearly maintenance rather than waiting for a stain.