Water Damage Restoration / Hidden Leak
Air Conditioner Leak Water Damage in West Palm Beach
Ceiling stain under the attic unit, or damp carpet outside the air handler closet? By the time an AC leak is visible it has usually been running for weeks. We find how far it went and dry what it reached.
Your AC Produces Gallons of Water Every Day
Your air conditioner is also a dehumidifier. On a hot Palm Beach County day, a residential system pulls several gallons of water out of the air — sometimes far more.
All of it has to go somewhere. It condenses on the evaporator coil, drips into a drain pan, and exits through a condensate line. That system runs for eight or nine months of the year with no redundancy. Block the line, crack the pan or lose the slope on the drain and every one of those gallons goes into your ceiling instead.
That's what makes AC leaks different from a burst pipe. A pipe failure is dramatic and you deal with it immediately. A condensate leak trickles into a dark, enclosed space for weeks — which is why it's the leading cause of hidden mold in Florida homes rather than of emergency calls.
Why Florida Air Conditioners Leak
Clogged Condensate Lines
The most common cause by a wide margin. Biological slime builds up inside the drain line, the water backs up, and the pan overflows. Nothing has broken. The system just can't drain.
A Dirty Filter, Believe It or Not
A restricted filter starves airflow across the coil. The coil ices over. Then the system cycles off and all that ice melts at once. A pan sized for a steady drip gets a volume it can't handle. Low refrigerant does the same. A twenty-dollar filter left too long causes a surprising number of the losses we attend.
Rusted or Cracked Drain Pans
Metal pans in older systems corrode from the inside. The pan looks intact from above and leaks from underneath.
Failed Condensate Pumps
Where gravity drainage isn't possible, as in many condos and interior closets, a pump moves the water. When it fails there's no backup path.
Disconnected or Badly Sloped Lines
Condensate drains rely on continuous gentle fall. A line knocked loose during other work, or one that has sagged over years, holds water and backs up.
Attic Air Handlers — the Worst Case
An attic unit sits directly above your ceiling with insulation to soak it up and nobody to notice. Water tracks along framing before appearing as a stain below. If your air handler is in the attic, treat any ceiling discoloration as urgent.
What You'll Notice First
- A musty smell when the system runs — the clearest early warning, because air passing over wet surfaces carries odour into every room the ductwork serves.
- Ceiling discoloration below an attic unit, usually a soft-edged patch, not a sharp ring.
- Damp baseboards or staining near the air handler closet.
- Higher indoor humidity despite the AC running.
- Water where there shouldn't be any — outside the closet or dripping from a ceiling vent.
If the smell appears only when the system starts, the problem is almost certainly inside the air handler or the ductwork. Mold inspection and testing →
Where the Water Actually Goes
The stain you can see is where the water ended up. It is almost never where the problem is.
Water leaving a drain pan follows framing, drops through insulation and spreads across the top of your ceiling drywall before saturating enough to show. In a wall-mounted closet it runs down the cavity behind the air handler, wets the bottom plate and wicks into drywall on both sides. On a slab it travels under tile and can surface in the next room.
So the affected area is almost always larger than what you can see. We map it using meters and infrared before deciding what comes out — on this type of loss, the gap between visible and actual damage is the widest we see. How we assess and dry →
Will Insurance Cover It? An Honest Answer
Here's where AC leaks get difficult, without the softening.
Cover generally turns on whether the loss was sudden and accidental or built up gradually through deferred maintenance. Condensate leaks sit right on that boundary. Uncomfortably so.
Often covered: a pan that cracks or a pump that fails abruptly, causing a discrete event you discovered promptly.
Often denied: a drain line that clogged and dripped for months, or damage attributed to a filter that was never changed. Carriers frequently classify these as maintenance.
Mold arising from either scenario is usually subject to a separate sublimit even when the water damage itself is covered.
What helps is documentation and speed: reporting promptly, photographing before anything is removed, and dated moisture readings. What hurts is a leak that has clearly run a long time with no service history. Florida claims explained →
We document thoroughly and give you an itemised estimate your adjuster can work from. We won't tell you a claim is certain when it isn't.
We Dry and Restore — Your HVAC Contractor Fixes the Unit
Clear scope. We handle the water: extraction, structural drying, removing unsalvageable materials, mold remediation where needed, and repairs. We don't repair air conditioning systems.
Order matters, though. Drying while the leak continues wastes everyone's time, so the unit has to be dealt with first, or at least alongside. If you don't have an HVAC contractor we can point you to one and coordinate scheduling. Mold remediation →
This is one of nine services we provide across the county — see all water damage services →.
Three Things That Prevent Most of These
Fit a Float Switch
If you don't have one, fit one. It shuts the system down when the pan starts filling, turning a flooded ceiling into an afternoon without air conditioning — and it prevents most of the losses on this page.
Flush the Condensate Line
Do this a few times a year. Distilled white vinegar or condensate tablets clear biological buildup; avoid bleach, which corrodes metal over time.
Change the Filter on Schedule
The cheapest water damage prevention a Florida homeowner has.
AC Leak Water Damage Questions
How long can an AC leak run before I notice?
Weeks, commonly. A slow drip is absorbed by insulation and drywall long before it produces a visible stain, and attic units are worse because there's nothing at eye level to see. Most losses we attend had run well over a month.
Can I just dry the ceiling stain myself?
Cleaning or painting the stain treats the symptom. The water is above the drywall in insulation and framing, and it will keep coming until the drain problem is fixed. Paint over an active leak and you'll be repainting, probably over mold.
Does the whole ceiling need replacing?
Rarely. We cut back to a margin past the wet area and patch a section rather than the full ceiling. Older textured and popcorn finishes are an exception — they can contain asbestos and need testing before disturbance. Ceiling water damage repair →
Will mold always follow an AC leak?
Not always, but conditions are close to ideal — constant moisture, darkness, no airflow, paper-faced drywall to feed on. Anything running more than a few days gets inspected before we call it clean.
The smell is the leak announcing itself
The Smell Is the Warning You Get
That smell is the leak announcing itself. We'll trace how far the moisture travelled and justify every removal with a number off the meter.
AC leak water damage restoration across West Palm Beach, Palm Beach Gardens, Riviera Beach, Delray Beach and Palm Beach County.