Cleanup and drying after an air conditioner drain line clogs or a secondary pan overflows into a Phoenix ceiling.
Fastest: call (833) 490-5225. Or send this and we call you back.
An AC condensate leak is the water an air conditioner pulls out of the air escaping before it reaches a drain. In Phoenix that usually means a blocked drain line or a full secondary pan under an attic air handler. Phoenix Water Damage Restoration dries the ceiling, wall and flooring the water reached across Maricopa County.
Switch the cooling off at the thermostat the moment you see water near a vent, an attic hatch or an air handler closet. The unit keeps making water for as long as it runs, so leaving it on to stay comfortable is what turns a drip into a ceiling repair.
A cooling system here does a job that systems elsewhere never attempt. It runs for most of the year and almost without pause from May into September, and every hour it runs it condenses water out of the air and sends it down a drain line. Block that line and the water has to go somewhere; above a ceiling the only direction is down.
An HVAC technician clears the line, replaces the float switch or repairs the pan. The crew Phoenix Water Damage Restoration sends handles what the water did on the way through: the ceiling, the insulation, the wall below it and the flooring on the slab, dried to readings you keep a copy of.
Because they run wet nearly all year. A system cooling a house from May into September makes condensate almost continuously, and a permanently damp drain line grows a slime of algae and dust that eventually plugs it. Construction dust, loose insulation fibers and a trap that dries out over winter all help it along.
The drain is a simple thing: a trap, a slope and a pipe to the outside or to a laundry drain. A line that sags, drains uphill for a stretch or lost its trap seal over a mild winter will hold water and sludge in the low spot. The first hot week pushes more water into it than it can pass.
That is also why the complaint is sometimes the opposite of what you would expect. A float switch wired into the pan shuts the system off instead of letting it flood, so the first symptom can be an air conditioner that quits on the hottest afternoon of the week rather than a drip. Treat that shutdown as information, not just an inconvenience.
It means the primary drain has already failed and the backup is doing the work. The secondary pan under an attic air handler exists to catch what the unit makes when the main drain blocks. Standing water in it is a warning, and a stain on the ceiling below means it has overflowed or rusted through.
Pans are not permanent. They sit in a hot attic for decades, collect dust and mineral scale, and corrode at the seams and around the drain fitting. The pan's own drain line can clog exactly like the primary one, which leaves the pan full and the ceiling as the next thing in line.
When the technician is up there, the pan, the float switch and both drain lines are photographed. Those photographs go to you and to whoever does the HVAC repair, so the conversation about what failed does not depend on anybody's memory of a dark attic.
Height and insulation. An attic leak drops through blown-in insulation, ceiling board, the wall cavity and finally onto the slab, wetting four layers before anyone sees a mark. A closet or garage unit puts its water straight onto a slab floor, where it spreads quickly but stays in plain sight.
Insulation is the part that costs money. Once it has absorbed water it mats down, stops insulating and holds the moisture against the board, which is why it is removed rather than dried. That removal is also what reveals how far along the joists the water actually ran.
On the slab the water moves sideways instead of down. It slips under tile, laminate and carpet and up the paper face of the drywall at the baseboard, so the ceiling repair and the floor drying often turn out to be the same job.
Follow what the crew tells you, because it depends on the leak. While the system is the thing making the water, it stays off until an HVAC technician has cleared the drain. Once that is fixed, running the cooling usually helps, since cooler and drier indoor air speeds up the work the equipment is doing.
Drying equipment adds heat of its own, and a July house with no cooling and three air movers running becomes unpleasant quickly. The crew will balance the two and tell you which vents to keep closed or open so the air goes where the wet material is.
One thing not to do is point a household fan into an open ceiling cavity and leave it. Without a dehumidifier the moisture simply moves to another part of the house, and if there is growth in the cavity the fan spreads it. Structural drying is a controlled pairing of airflow and dehumidification, not just air.
Do not step on drywall or on insulation when you go into the attic for a look; neither will hold you, and a foot through the ceiling turns a small leak into a hole. Keep the system off until the drain has been cleared, and treat water in a secondary pan as dirty, because it has been sitting in dust and whatever grows in a wet pan.
The crew switches the air handler off so the leak stops producing water, then traces where it has gone with a meter and a thermal camera, from the pan down through the ceiling and into the wall.
Water in the secondary pan and sitting on top of the ceiling board is extracted and the area under the unit is dried out. Clearing the drain line, trap or float switch is HVAC work, and the technician will tell you which part looks responsible.
Soaked attic insulation is bagged and removed and board is cut back where it has lost its strength. On a platform the plywood and the framing around it get checked too, because they hold water long after the pan is empty.
Air movers and a dehumidifier run on the cavity, the room and the flooring, logged every visit. Summer attic heat speeds drying while an August week with a high dew point slows it, which is exactly why a number rather than a date ends the job.
Insulation, board, texture and paint are restored once the readings hold. The repair stage is quoted on its own, separately from the emergency drying work.
The Valley default in anything built since the 1980s, and the worst case for damage. The unit sits on a platform above insulation, ceiling board and the rooms you live in, so a blocked drain wets four layers before a mark appears. The primary drain, the pan, the pan's own drain line and the float switch are all up there and all out of sight.
Older and smaller houses often have the unit in a hall closet or against a garage wall. Water goes straight onto the slab, runs under the closet door and spreads into carpet, laminate and baseboards in the next room or two. It does less hidden damage but covers more floor, fast.
Common on low-slope and foam-roofed houses and on nearly every small commercial building here. Condensate either drains onto the roof or through an internal drain, so a blockage ponds water beside the curb or pushes it inside at the duct penetration. See commercial water damage for how that runs in a tenant space.
Condensate work is usually one area and a handful of drying days, which puts it at the gentler end of water damage. What moves the number is whether the water stayed in the pan or came through the ceiling, and how much insulation it reached.
| Job | Typical range | What it includes |
|---|---|---|
| Water heater, appliance, AC or swamp-cooler leak cleanup (extraction + drying, one area) | $800–$3,000 | HVAC repair is not part of this figure |
| Emergency inspection and moisture assessment | Free–$200 | Meter and camera check of the pan, the cavity and the rooms below |
| Air mover (per unit, per day) | $25–$50 | Several normally run at once on an opened cavity |
| Commercial dehumidifier, LGR (per unit, per day) | $75–$150 | Pulls out the moisture the air movers release |
| Ceiling water damage repair (one section, incl. texture + paint) | $500–$1,800 | Patch and finish after the cavity reads dry |
| After-hours, weekend or holiday emergency fee | $100–$300 | When a crew goes out at night or on a holiday |
Every figure below is an estimate used to set expectations, not a price list. You get the emergency-stage number explained and approved before the equipment is switched on, and the HVAC repair that stops the leak is billed by whoever carries it out.
A crew is dispatched as fast as one is available, and you approve the estimate before any work starts.
Attic air handlers are the Valley norm in anything built since the 1980s, which is what makes this a different service here than in a city with mechanical rooms. The tile-roofed subdivisions of Ahwatukee, Laveen and northwest Chandler, plus the 1970s-to-1990s homes of Dobson Ranch and McCormick Ranch, nearly all have a unit on a platform over finished rooms.
The season is tight and predictable. Condensate calls start in May when a system first runs for days at a stretch, peak through July and August, and tail off in October. Owners who leave the Valley for the summer often come back in the fall to a ceiling that failed in July, which is the worst version of this leak.
A packaged rooftop unit adds a second problem. Its condensate drains onto the roof, and a blocked drain or scupper lets that water pond beside the curb. On the older low-slope roofs of Maryvale, Alhambra and central Glendale, that is where a cooling problem quietly turns into a roof problem.
Stained, sagging or dripping ceilings dried and repaired, with soaked attic insulation removed and the leak traced first.
Cleanup after a rooftop or wall swamp cooler leaks: wet ceilings, soaked insulation and stained stucco, dried to readings.
Air movers, LGR dehumidifiers and daily meter readings that take a slab, tile bed, wall or ceiling to a documented dry goal.
Water removal, drying and records for Valley offices, retail, restaurants, warehouses and multi-tenant space, quoted after a walkthrough.
Not sure if you're covered? Check your ZIP code.
A ceiling stain under a swamp cooler or an air conditioner nearly always starts at one of six parts: a stuck float valve, the small copper supply line, a blocked overflow pipe, a corroded pan, a plugged condensate drain or a full secondary pan.
Plenty of homeowners do, with a wet-dry vacuum on the outside end of the line. That is HVAC territory rather than ours, and it is worth learning why it clogged instead of repeating it every summer. If the ceiling or the wall below is already wet, the drying is the part that will not wait.
It leaves the coil reasonably clean, since it started as water in the air. By the time it has sat in a pan and crept through drain slime and insulation it is not, which is why soaked insulation and carpet pad from this kind of leak are normally removed rather than dried in place.
No, that is only the leak pausing. Switch the system back on in July and the pan fills again within hours. Get the drain fixed, then have the cavity measured, because the stain tells you water arrived and nothing at all about how much is still sitting above the board.
Three to five days is normal for one ceiling and the room beneath it, assuming the insulation is out and the leak is fixed. Readings taken on each visit decide it. If a monsoon week pushes the dew point up, the dehumidifier simply works longer to reach the same target.
Ask your insurer, because policies treat a sudden failure differently from a drain that had been quietly overflowing all season, and wear and tear is a common exclusion. Photograph the pan and the ceiling before anything is moved, and keep the readings and drying log the crew leaves with you.
It makes one a great deal less likely, and it is why a system shutting itself down in the heat can be good news. Switches do stick, and a pan can rust through below the level the switch watches, so a yearly look at the pan and both drain lines is still worth the trip up the ladder.
Whoever you reach first, then the other. The HVAC technician stops the water and our crew deals with what it soaked, and the two jobs overlap happily. Phones here are answered around the clock on (833) 490-5225, and a crew is dispatched as fast as one becomes available.