My air conditioner is leaking water
Need urgent home service help?
Call to be connected with an available independent HVAC professional.
Independent providers determine availability and pricing. How matching works
Short answer
Water leaking from an indoor AC unit is usually a blocked condensate drain, a full or cracked drain pan, or a frozen coil that is now melting. Switch the system off at the thermostat so it stops producing more water, mop up what has already escaped, and call an HVAC technician. If water has reached drywall, insulation or flooring, a water-damage company may be needed as well.
An air conditioner that leaks water indoors is almost always a condensate problem, not a refrigerant problem. The system pulls humidity out of the air, and that water is supposed to leave through a drain line. When the line clogs, the pan cracks or the pan overflows, water finds the ceiling, the closet floor or the drywall instead. Turn the system off at the thermostat, contain the water, and get it looked at the same day.
Last updated
Is this an emergency?
It is rarely a life-safety emergency, but it is time-sensitive. Condensate water is continuous while the system runs, so a slow drip becomes saturated drywall in a day and a mold problem in a matter of days in South Florida humidity.
Treat it as urgent if water is running through a ceiling, dripping onto electrical equipment or an air handler's control board, or pooling anywhere near a panel or outlet. Treat it as prompt-service if it is a small puddle in a garage or closet with a tile floor.
What should I do right now?
- Turn the system off at the thermostat — set it to Off, not just to a higher temperature. That stops new condensate forming.
- Put down towels or a shallow pan and soak up standing water so it stops spreading into flooring or drywall.
- If water is dripping near the air handler's electrical connections or a nearby outlet, switch the air handler off at its breaker too.
- Look at the outdoor unit and the indoor coil. Visible ice means a frozen coil that is now thawing; leave the system off for a few hours before anyone tries to run it again.
- Photograph the water and any stained ceiling or wall before you clean up — useful for both the technician and any insurance claim.
What might cause this?
| Cause | What you may notice | Typical fix path |
|---|---|---|
| Clogged condensate drain line | Water in the emergency pan, or a float switch shutting the system off | Line cleared and flushed by an HVAC tech |
| Cracked or rusted drain pan | Drip continues even with a clear line | Pan replaced |
| Frozen evaporator coil melting | Ice on the coil or refrigerant line, weak airflow beforehand | Airflow or refrigerant fault diagnosed and corrected |
| Dirty filter restricting airflow | Filter visibly loaded; coil freezing repeatedly | Filter replaced, coil inspected |
| Disconnected or improperly sloped drain line | Water near the air handler rather than at a drain | Line re-secured and re-pitched |
| Condensate pump failure (attic or closet units) | Pump silent, reservoir full | Pump repaired or replaced |
Who should I call?
Call an HVAC technician first. Condensate drains, drain pans, float switches, coils and condensate pumps are all HVAC scope, and the diagnosis determines everything that follows.
Call a water-damage restoration company as a second trade if water has been running for more than a few hours, has soaked drywall or insulation, has gone through a ceiling, or has reached carpet or wood flooring. Drying is a separate specialty from fixing the leak, and in this climate the drying window is short.
What not to do
- Do not keep running the system with a bucket underneath — you are choosing to keep making water.
- Do not pour drain cleaner into the condensate line; it can damage the pan and pipe joints.
- Do not chip or pry ice off a frozen coil. Fins bend easily and the repair gets more expensive.
- Do not paint over or seal a stained ceiling before the cause is fixed and the cavity is dry.
South Florida considerations
Systems here run close to year-round and pull a large volume of moisture out of the air, so condensate volume is high and drain lines clog more often than in drier climates. Attic and closet air handlers are common, which puts the leak directly above finished ceilings.
Seasonal homes left with the system running unattended are a frequent source of large ceiling losses — a float switch that shuts the unit down is a lot cheaper than the ceiling it protects.
Getting help
Describe what is happening and UrgentHomePro will try to connect you with an available independent local provider. You decide whether to hire anyone who contacts you.
Frequently asked questions
Is water leaking from my AC dangerous?
The water itself is condensate, not sewage, so the hazard is property damage rather than health — unless it reaches electrical equipment, in which case shut the air handler off at the breaker before going near it.
Can I just clear the drain line myself?
Some homeowners clear a short accessible line with a wet/dry vacuum at the outdoor termination. If the line is not accessible, the pan is cracked, or water returns quickly, it needs a technician.
Why did my AC shut itself off when it started leaking?
Many systems have a float switch that cuts the unit off when the drain pan fills. That is the switch doing its job — the underlying clog still needs to be cleared.
Do I need a water-damage company as well as an HVAC tech?
Only if water has soaked building materials. Surface water on tile that you mopped up is fine; wet drywall, insulation, carpet or wood flooring generally needs professional drying.
Sources
- Central air conditioning operation, maintenance and replacement guidance — U.S. Department of Energy
- Heat illness prevention and warning signs during extreme heat — CDC
- Verify a Florida contractor or plumbing license — Florida DBPR Licensing Portal
Need ac leaking water?
Tell us what you need and enter your ZIP code to find local professionals who may be able to help.
More HVAC services
Answers, costs and next steps
AC leaking water by city
UrgentHomePro accepts requests around the clock. Availability, hours, licensing, pricing and warranties are set by each independent provider and vary — we tell you when no participating provider is available rather than implying one is on the way.
UrgentHomePro is a home-services matching platform. We help connect consumers with independent home-service providers. UrgentHomePro does not perform home repairs and does not employ the independent providers it may route requests to. Provider availability, qualifications, licensing, pricing, warranties and service terms are determined by the individual provider. Calls placed through this site may be connected to an independent provider or a partner provider network, and UrgentHomePro may be compensated for qualifying calls and requests. Availability and arrival times vary by provider, location and current demand.