GuidesCondensate
AC Leaking Water in Las Vegas: What the Drain and Pan Are Telling You
An air conditioner removes humidity while it cools. That water is supposed to leave through a condensate drain. When the drain clogs, the pan fills, or a line cracks, you get water on the ceiling, in the closet, or on the garage floor.
In the Las Vegas Valley the system cools for much of the year, so a neglected drain has a long season to plug up. A leak is not always “the coil is dead.” It is often the drain path.
Colton Air Conditioning schedules these calls Monday–Friday, 8am–5pm.
Shut cooling off if water is actively leaking
If you see active dripping onto drywall, a soaked ceiling, or a pan overflowing:
- Turn cooling off at the thermostat.
- Leave the fan off if water is near electrical parts you can see. Do not stand in water and open panels.
- Put a towel or shallow pan under the drip if it is safe to reach.
- Do not keep running cool to “dry the house.” That makes more condensate.
If the only sign is a damp pan with no active overflow and the ceiling is dry, you can still shut cooling off until someone clears the drain. Guessing wrong with a full pan is how a small clog becomes a drywall job.
What usually causes the water
| Cause | What you might see | Homeowner limit |
|---|---|---|
| Clogged condensate drain | Water at the air handler, musty smell, float switch shutting the system off | Do not force wire or chemicals into a line you cannot see end to end |
| Full or rusted drain pan | Standing water under the coil | Towels only. Pan replacement is a tech job |
| Disconnected or cracked drain line | Drip at a joint or along the line | Leave it off |
| Frozen coil thawing | Water after ice melts | Shut cooling off while iced — see [frozen AC coil](/guides/frozen-ac-coil) |
| Poor trap or vent on the drain | Gurgling, intermittent overflow | Diagnosis |
A float switch that stops the system is doing its job. Resetting power over and over without clearing the drain just floods the pan again.
What not to do
- Do not keep cooling on while water is overflowing.
- Do not pour random cleaners into a drain if you cannot confirm where the line goes.
- Do not open the air handler if you are standing in water.
- Do not assume the outdoor unit is the leak source. Condensate almost always starts at the indoor coil and drain.
Related: AC running but not cooling, AC repair Las Vegas.
When to call
Call when water is active, the ceiling is wet, the system keeps shutting off on a float switch, or the drain still backs up after you shut cooling off and dried what you could reach safely.
Have ready if you can: neighborhood, air handler location (closet, garage, attic), whether the leak started after a freeze-up, and whether cooling is already off.
Hours are Monday–Friday, 8am–5pm. If water starts outside those hours, shut cooling off, protect the floor and drywall if you can do it safely, and call when we are open.
FAQ
Is AC water the same as a refrigerant leak?
No. Condensate is water from humidity. Refrigerant leaks are a different problem and do not usually show up as a puddle of water under the air handler.
Can I clear the drain myself?
Only if you already know the cleanout and can work dry and safe. If water is near power, the ceiling is wet, or you cannot see the line, leave it for a tech.
Why does this happen so often in Las Vegas?
Long cooling seasons mean long condensate seasons. Dust and algae build in the drain while the system runs most of the year.
Does a water leak mean I need a new air conditioner?
No. Many leaks are a drain, a pan, or a line. Replacement is a separate call after diagnosis.
What hours can I reach Colton?
Monday through Friday, 8am to 5pm.
Cooling off and still dealing with a wet pan or ceiling? Call Colton Air Conditioning at (702) 738-6976 Monday–Friday, 8am–5pm. Tell us where the water is and what you already shut off. We will tell you if we can see it.
Colton Air Conditioning · Las Vegas Valley residential HVAC · Monday–Friday 8am–5pm
Call (702) 738-6976 or Book Online. License 0092120. Hours Monday through Friday, 8am to 5pm. Saturday and Sunday are closed.
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