AC Repair in Chatsworth, CA: Straight Answers for Older Systems
“My AC stopped working, so I found this company online. They responded quickly and arrived within a few hours. The technician diagnosed the issue, replaced the motor, and had my system up and running the same day. Excellent service. I highly recommend them to anyone needing AC repair!”

Matin Seid, ⭐⭐⭐⭐⭐ Google Review

Where Chatsworth Air Conditioners Break Down
Chatsworth covers about 15 square miles at the northwest corner of the San Fernando Valley, from the Santa Susana Mountains and Stoney Point down past Devonshire Street. Most homes are owner-occupied single-family houses, and AC trouble tends to start in one of three places.

In the attic
In many single-story homes the indoor coil and air handler sit in the attic. Whenever the AC runs, that coil produces water, which leaves through a condensate drain line. When algae or debris clogs the line, the pan fills. If there is an overflow safety switch, it shuts the system off. If there is not, the water ends up in the ceiling below.
Clearing the drain line runs $265 – $395, and adding an overflow safety switch is $285. Both cost far less than drywall and a ceiling repair.
In the side yard
Larger lots and horse properties near the foothills put condensers close to dirt, hay and brush. Dust packs the coil, insects get into the electrical compartment, and the outdoor fan motor works harder every season. A fan motor that hums, turns slowly or stops is a common hot-afternoon failure. A standard motor replacement is $695 – $895.
On the roof
Chatsworth also has business parks and industrial buildings cooled by rooftop package units. We service commercial rooftop equipment as well as homes, with the same diagnostic-first approach and written pricing.

Signs Your Chatsworth AC Needs a Technician
- A water stain on the ceiling below the attic unit, or water standing in the drain pan
- The system shut itself off and will not restart, often a tripped overflow switch
- The outdoor unit hums, but the fan is not spinning
- Ice on the copper line at the outdoor unit or on the indoor coil
- The breaker trips on hot afternoons
- Warm air from the vents while the outdoor unit is running

Repair or Replace: The Honest Math
Here is what common repairs cost at Reliable. Every visit starts with the $85 diagnostic, which is credited toward the repair if you go ahead.
| Repair | Our price |
|---|---|
| Diagnostic / service call | $85, credited toward the repair if you go ahead |
| Condensate drain line cleaning | $265 – $395 |
| Condensate overflow safety switch | $285 |
| Condenser fan motor | $695 – $895 (standard motors; variable-speed priced separately) |
| Compressor | $3,200 – $4,800 |
A compressor is the one repair where replacement belongs in the conversation. At $3,200 – $4,800 it is roughly a third of a complete heat pump replacement, which runs $11,200 – $15,000 for a 2.5-ton system with a matched air handler. We will give you both prices in writing.
Still on R-22?
R-22 production and import ended in the U.S. in 2020, so recharging an R-22 system depends on a shrinking supply of reclaimed refrigerant. We can still repair R-22 systems, but a refrigerant leak on one is usually the point to price out a replacement. More on the refrigerant changes on our refrigerant leak repair page.
If you do replace
Chatsworth is in the City of Los Angeles, so a replacement needs an LADBS permit. We file it and schedule the inspection, and the quote also covers Title 24 / HERS testing and haul-away of the old equipment. Estimates on replacements are free. See AC installation in Chatsworth.
Chatsworth is also on LADWP, which bills its highest summer rates from June through September. A system with a weak capacitor, a dirty coil or a low charge costs the most to run in exactly those months.
A Second Opinion Before You Buy a New System
- We test before we quote. The technician checks the capacitor, amp draw, pressures and drain before recommending anything.
- You see the price first. Every repair is priced in writing before work begins.
- $85 diagnostic, credited. The fee is applied toward the repair if you go ahead.
- Repairs are warrantied. 30 days on parts and 30 days on labor from the date of service.
- Licensed and insured. CSLB #1135270 (C-20). We work on all major brands.

Chatsworth AC Repair FAQs
Almost always a clogged condensate drain. The indoor coil makes water whenever the AC runs, and when the drain line clogs, the pan overflows. Turn the system off and call us. We clear the line ($265 – $395) and, if there is no overflow safety switch, we can add one ($285) so the system shuts itself off before it overflows next time.
For an electrical part like a capacitor, contactor or fan motor, usually yes. For a refrigerant leak or a failed compressor, usually no, because R-22 is no longer produced and recharging relies on reclaimed supply. We will give you the repair price and a free replacement estimate so you can compare.
Common causes are a weak capacitor, a compressor struggling to start, a failing fan motor, or a dirty coil that drives up pressure and current. Resetting the breaker over and over can damage the compressor, so leave it off and have it diagnosed.
Yes. The diagnostic is $85 and is credited if we do the repair. If the system really does need replacing, we will tell you, and our estimate for a new system is free.
Yes. We work on commercial rooftop package units as well as residential systems. Call to schedule and tell us how many units are on the roof.
$85, credited toward the repair if you go ahead. The repair price is in writing before any work begins. If your system is a heat pump, see heat pump repair in Chatsworth.

Get Your Chatsworth AC Checked
Same-day service when available. $85 diagnostic credited toward your repair, and a written price before any work begins.
