Window AC Repair in Los Angeles
Window units, through-wall AC, and portable air conditioners — diagnosed and repaired across Westside LA.
Updated May 2026
Quick facts
| Service call | $85 — fully credited toward your repair |
|---|---|
| Warranty | 30-day labor · 90-day parts |
| Credentials | BEAR #A 50636 · EPA Section 608 Universal |
| Hours | Mon–Fri 09:00–19:00 Sat–Sun 10:00–16:00 |
Not-cooling diagnosis
We find why the unit runs but doesn't cool — coils, refrigerant, capacitor, or compressor.
Leak & drainage repair
Water dripping indoors usually means a clogged drain, bad tilt, or frozen coil — we fix the cause.
EPA 608 refrigerant work
Certified to check and handle refrigerant on sealed window-unit systems.
Electrical & control repair
Capacitors, fan motors, thermostats, and control boards on both mechanical and digital units.
Honest repair-vs-replace advice
If your unit costs more to fix than to replace, we'll say so. No upselling.
$0 service call with repair
$85 fee waived when you proceed.
Bilingual EN/ES
Both languages spoken.
How Epic Star repairs window air conditioners in Los Angeles
Window and through-wall AC units do a lot of the cooling work in LA’s older apartments, duplexes, and additions where central air was never installed. When one quits during a heat wave, it’s urgent — and it’s the kind of repair we can usually handle same-day. We diagnose the real cause, give you an honest repair-versus-replace number, and fix it on the spot when parts allow.
What we repair
Window units, through-wall sleeve units, and portable air conditioners. The common failures are predictable: the unit runs but won’t cool, water drips indoors, it won’t power on, coils ice over, or it suddenly runs loud. Most of these trace to a handful of causes — dirty or frozen coils, a clogged drain, a weak capacitor, a tired fan motor, or a refrigerant leak in the sealed system.
The honest repair-vs-replace conversation
Window AC is the one HVAC category where replacement is often the smarter call. A budget unit that has lost its refrigerant charge or blown its compressor usually isn’t worth a sealed-system repair — a new comparable unit costs less. We’ll tell you that directly. But for a simple drain clog, capacitor, or fan-motor fix — or for a larger through-wall unit that’s expensive to replace and re-frame — repair is the right move. You get the math before you decide.
Leaks and icing
The two complaints we hear most are water leaking inside and ice forming on the coils. Indoor leaks are almost always a clogged drain channel plus a unit that isn’t tilted slightly outward. Icing points to low refrigerant or restricted airflow from a dirty filter. We fix the cause, not just the symptom — clearing a drain on a unit that’s icing because of low charge just buys you a day.
Refrigerant handled correctly
We are EPA Section 608 certified, which the law requires for any refrigerant handling. We check pressures, locate leaks, and explain whether sealed-system repair makes economic sense for your specific unit.
Our scope
We handle all HVAC — window units, mini-splits, tune-ups, thermostats, furnace service, and system replacement coordination. One call covers it.
Service area
Westside LA, the San Fernando Valley, Hollywood, Mid-City, and the beach cities — Beverly Hills, Santa Monica, Brentwood, Culver City, Sherman Oaks, Studio City, North Hollywood, Hollywood, and more.
Call (213) 205-2055
Or text a photo of your unit’s model/serial plate (usually on the side or behind the front grille) for a fast estimate.
Recent repair work by Epic Star
Common issues we fix
Window AC runs but doesn't cool
Most likely causes:
- Dirty or iced-over coils
- Low refrigerant from a sealed-system leak
- Failed compressor
- Weak run capacitor
Water leaking inside the room
Most likely causes:
- Clogged condensate drain or drain channel
- Unit not tilted slightly toward the outside
- Frozen evaporator coil thawing
- Cracked drain pan
Window AC won't turn on
Most likely causes:
- Tripped outlet or reset button on the cord (GFCI plug)
- Failed control board or thermostat
- Bad start capacitor
- Internal overload tripped
Ice forming on the coils
Most likely causes:
- Low refrigerant charge
- Dirty air filter restricting airflow
- Failing blower fan
- Running in cool weather below the unit's range
Loud noise or vibration
Most likely causes:
- Fan blade hitting debris or housing
- Worn fan motor bearings
- Loose mounting in the window frame
- Compressor mount failure
Frequently asked questions
How much does window AC repair cost in Los Angeles?
Most window AC repairs run $90–$320. A clogged drain or thorough coil cleaning is typically $90–$150. Capacitor or fan motor replacement runs $140–$280. Sealed-system refrigerant work and compressor repairs are higher and often not worth it on budget units. Our $85 service call is waived with a completed repair, and you get a flat quote first.
Is it worth repairing a window AC unit?
It depends on the unit's value and the problem. For a $150–$250 budget unit with a failed compressor or refrigerant leak, replacement almost always wins. For a higher-capacity or through-wall unit, or a simple fix like a clogged drain, bad capacitor, or fan motor, repair makes good sense. We give you the honest math before you spend a dollar.
Why is my window AC leaking water inside?
The most common cause is a clogged condensate drain channel combined with the unit not being tilted slightly toward the outside, so water runs indoors instead of draining outside. A frozen evaporator coil thawing can also cause it. We clear the drain, correct the tilt, and check for the icing cause if present — usually a $90–$160 repair.
Do you handle the refrigerant in window units?
Yes. We are EPA Section 608 certified, which is legally required to work with refrigerant. That said, many window units use a fully sealed system where a refrigerant leak makes repair uneconomical compared to replacement. We'll diagnose the leak and give you an honest cost comparison.
Can you come the same day?
Often, yes, especially during heat waves when a failed unit is urgent. Call before noon Monday through Saturday and we'll typically reach you that afternoon. Coverage is Westside LA, the San Fernando Valley west of the 405, Hollywood, Mid-City, and the beach cities. Call (213) 205-2055.
Do you repair portable air conditioners too?
Yes. Portable AC units share most components with window units — compressor, coils, fan, and a condensate system. The most common portable-unit issues are clogged drains, exhaust-hose problems, and failed fan motors. Same $85 service call, waived with repair.
Call (213) 205-2055
Or text a photo of your appliance for a fast estimate.
📞 (213) 205-2055