Trane AC or Mini-Split Leaking Water in Burbank
The homeowner answer: Burbank Trane HVAC fixes water leaks from Trane indoor units and mini-split heads across Burbank, CA, from Magnolia Park to Toluca Lake-adjacent homes in ZIP 91505 - almost always a clogged condensate drain or failed pump, not refrigerant. Call (213) 805-8137 or book online to schedule a tech.
Quick facts
- Most leaks trace to the condensate drain, pan, trap, or pump - not refrigerant.
- A safety float switch may stop cooling when the pan fills (by design).
- Drain clearing typically $139-$300; condensate pump replacement higher.
- Burbank attic heat (130 F-plus) breeds the drain-line slime that clogs.
- Service ZIPs: 91501, 91502, 91504, 91505, 91506, 91523. Hours: Weekdays 7am-6pm, weekends 8am-2pm.
- Ductless refrigerant work in warranty referred to the manufacturer first.
- Independent, insured contractor.
Why does my Trane unit leak water in Burbank?
Cooling makes water. As the indoor coil pulls heat from the air, humidity condenses, drips into the drain pan, and exits through a condensate line. Anything that blocks that path puts water on your floor or ceiling. The number-one cause is a clogged drain line - in Burbank's hot attics, biological slime builds in the trap and line and corks it. After that come a failed condensate pump, a cracked or rusted pan, and a frozen-then-melted coil overrunning the pan.
| Symptom | Likely cause / first check | Typical cost lane |
|---|---|---|
| Water around indoor unit, cooling still on | Clogged condensate drain / slimed trap | $139 - $300 |
| Leak plus cooling stops | Tripped float switch from full pan | $139 - $400 |
| Basement/closet pump not lifting water | Failed condensate pump | $200 - $600 |
| Ice on coil then a flood when it melts | Dirty filter / low charge freezing the coil | $150 - $1,500 |
| Mini-split head dripping at the wall | Kinked/sagging drain hose or failed lift pump | $150 - $600 |
What can I check before calling?
Turn the system off so it stops making water, then look at three things: the filter (replace if gray and clogged), the drain line exit outside (is it dripping, or dry while water pools inside?), and the float switch or pan for standing water. A wet-vac on the drain line outside sometimes pulls the clog. If the pan keeps refilling or the pump is silent, that's our visit. Don't keep running a system with an iced coil - that risks the compressor.
How does a tech find and clear the leak?
We work the condensate path end to end. First we confirm it is condensate, not refrigerant: refrigerant leaks leave oily residue and weak cooling, while a water leak tracks to the pan and drain. We check the pan for standing water and rust-through, inspect the trap and line for the black biological slime that grows in Burbank's 130 F-plus attics, and test the float switch - if one is wired in series with the 24-volt cooling circuit, a full pan opens it and stops cooling, which is the system protecting your ceiling. To clear a clog we pull it from the termination with a wet-vac or nitrogen, flush the line, and re-prime the trap; a slimed line also gets treated so it doesn't re-clog by August. If a condensate pump is involved, we test its float and motor and confirm it lifts water to the drain. We finish by running the system and watching a full pan-to-drain cycle to verify it stays dry.
What does a water-leak fix cost in Burbank?
Most are inexpensive. A drain clear and flush typically runs $139-$300, often the same visit. A tripped float switch from a full pan is the same drain work plus a switch test, roughly $139-$400. A failed condensate pump replacement lands around $200-$600. If the root cause is a frozen-then-melted coil, you're really paying to fix the freeze - a dirty filter or low charge - which can range $150-$1,500. A cracked or rusted drain pan on an older air handler is the higher-end repair because access can mean pulling the coil. The roughly $139 diagnostic confirms which of these you have before any work starts.
How does this tie into mini-split and ductless leaks?
On a wall-mounted head, water staining the wall usually means the gravity drain hose lost its slope, kinked behind the unit, or the lift pump quit. The fix is the same family of work - clear, re-slope, or replace the condensate path. Note that ductless is not Trane's core lineup; if your head is under a manufacturer warranty for a refrigerant or board fault, we point you to the authorized service for that, and handle the drain side. Deeper cooling faults live on AC not cooling and short cycling.
Common questions about Trane water leaks in Burbank
Why is water dripping from my Trane indoor unit in Burbank?
Nine times out of ten it's the condensate path, not refrigerant. The coil pulls humidity from the air, water collects in the pan, and a clogged drain line, slimed-up trap, or dead condensate pump backs it up until it overflows. The black slime that forms in warm attics is the usual blockage.
Will the float switch stop my Trane system if the drain clogs?
If one is installed, yes - a safety float switch opens the cooling circuit when the pan fills, which is why a leaking system sometimes also stops cooling. That's the system protecting your ceiling. We clear the drain, test the float, and confirm cooling resumes cleanly.
Is a leaking mini-split head different from a central Trane unit?
The cause is similar - a blocked drain or failed drain pump - but ductless heads are fussier. On a wall head, water under the unit often means a sagging or kinked drain hose, a clogged drain, or a failed lift pump. Trane ductless is not Trane's core line; we service the condensate side and pivot to the manufacturer for in-warranty refrigerant work.
Can a dirty filter cause water to leak from my AC?
Indirectly, yes. A clogged filter starves airflow, the coil drops below freezing, ice builds, and when it melts it overruns the pan. In a Burbank attic that bakes in summer, a neglected filter is a common root cause behind both the freeze and the leak.