HVAC · Los Angeles County
Air Conditioning in Los Angeles
Installation, same-day repair, and ductless mini splits, complete air conditioning service for homes and businesses across Los Angeles County and the San Fernando Valley.
Cooling Done Right, From Install to Repair
A dead air conditioner during a San Fernando Valley heat wave isn’t an inconvenience, for kids, seniors, and pets it’s a safety issue. ServiStar prioritizes emergency AC calls across Los Angeles County with same-day dispatch, fully stocked trucks, and technicians trained on every major brand, so the overwhelming majority of repairs are diagnosed and completed in a single visit.
And when it’s time for a new system, we do installation the way it should be done: a Manual J load calculation to size the equipment precisely, honest SEER2 and brand guidance, permits and Title 24 compliance handled, and final airflow balancing so every room actually gets cool. Central air, ductless mini splits, or rooftop units, one accountable team from start to finish.

Cooling Systems We Install & Service
The right system depends on your ductwork, layout, and cooling demand, we walk you through the pros and cons of each.

Central Air Conditioning
Whole-home cooling through your duct network from a single outdoor condenser, the standard for homes with existing ductwork.
Ductless Mini-Splits
Wall-mounted heads cool individual rooms independently, perfect for room additions, ADUs, and homes without ductwork.
Rooftop & Package Units
Residential and light-commercial package units installed and repaired on the roof, where they live.
How We Handle Your AC
Most AC failures trace back to a handful of causes: a failed capacitor, low refrigerant from a slow leak, a clogged drain line, or an electrical fault. The difference between a good repair and a repeat visit is finding which one, and why it happened.
On the installation side, proper sizing is the single biggest factor in long-term comfort and energy use. An oversized AC short-cycles and never dehumidifies; an undersized one runs nonstop and burns out early. That’s why every ServiStar install starts with a Manual J load calculation, never a square-footage guess.
Either way, the visit ends the same: the system tested under full load, the work explained in plain English, and a price you approved before anything started.
Good to know: a frozen AC is trying to tell you something, usually low refrigerant or blocked airflow. Turn it off and call; running it frozen can kill the compressor.
Call (818) 873-0613, emergency AC calls are prioritized during heat waves across LA County.
Advanced diagnostics find the actual failure, not just the symptom that announced it.
Repair or replacement, you see the exact price in writing before we start. No hourly meter.
Repaired or installed, tested under full cooling load, and walked through before we leave.
Air Conditioning FAQs
Cooling Systems We Service
Rated 4.8★ by Our LA County Neighbors
Real Google reviews from homeowners and businesses we’ve served across Los Angeles County, unfiltered and updated automatically.