Our company
25 Years of Serious HVAC in Southern California
United Heating & Air Conditioning is a licensed C-20 contractor headquartered in Hollywood, serving every community in Los Angeles County and Orange County with guaranteed heating and cooling work.
- 25 Years in Business
- 24/7 Emergency Service
- CA C-20 License #1094200
- Parts & Labor Guarantee
- Lifetime Guarantee
- Discounts Available
The company behind the name
For 25 years, United Heating & Air Conditioning has done one thing: keep Southern California homes and businesses comfortable. Through Valley heat waves, foothill cold snaps, and fire-season smoke, our technicians have repaired, replaced, and maintained heating and cooling systems across two counties — from first-time AC installations in pre-war bungalows to multi-zone systems in new hillside construction.
We’ve stayed deliberately focused. No franchising, no call-center layers between you and the people doing the work — just a licensed local contractor whose phone answers around the clock and whose guarantees mean what they say.
Our office is in Hollywood at 1825 North Las Palmas Avenue, Unit #531, Los Angeles, CA 90028, and our service area covers all of Los Angeles County and Orange County.
See everywhere we workLicensed, not 'a guy with a truck'
We hold CA State Warm-Air HVAC License C-20 #1094200 — California's specialty classification for heating, ventilation, and air conditioning. Permits pulled, code followed, work documented.
25 years of accountability
A quarter century in the same market means our reputation lives next door to our work. We've built it one honest diagnosis at a time, and we protect it on every job.
Guarantees in writing
Parts & labor guarantee on repairs. Lifetime guarantee on our installation workmanship. If our work fails, we make it right — that's the whole policy.
Actually answering at 2 AM
24/7 means our team picks up — nights, weekends, holidays. Heat waves and cold snaps are when our customers need us most, so that's when we're most available.
Licensed & Accountable
A state-licensed contractor that stands behind the work
United Heating & Air Conditioning holds the CA State Warm-Air HVAC License C-20 #1094200 — the California license classification specifically for warm-air heating, ventilation, and air conditioning. 25 years in business, every job covered by our parts & labor guarantee, and our installations backed by a lifetime guarantee.
- 25 years serving LA & Orange County
- 24/7 emergency availability
- Parts & labor guarantee
- Lifetime guarantee on our installations
What we do
AC Repair
Fast, guaranteed AC repair for every major brand — backed by 25 years of experience and a parts & labor guarantee.
Learn moreAC Installation
Right-sized system selection, licensed installation, and a lifetime guarantee on our workmanship.
Learn moreEmergency HVAC
True 24/7 response across LA & OC. A live answer at (818) 817-6005 — nights, weekends, and holidays.
Learn moreHeating Repair
Furnaces, heat pumps, and wall heaters — diagnosed and repaired with safety-first gas work, 24/7.
Learn moreFurnace Repair
Ignition, blower, and heat-exchanger repairs with combustion safety checked on every visit.
Learn moreHVAC Maintenance
Real multi-point tune-ups that prevent summer breakdowns, cut energy bills, and protect your warranty.
Learn moreIndoor Air Quality
Filtration, purification, and duct sealing that protect your home's air — especially during smoke season.
Learn moreCommercial HVAC
Rooftop units, restaurants, retail & offices — commercial service scheduled around your business hours.
Learn moreHeat Pumps
One efficient electric system for heating and cooling — ideal for SoCal homes, with honest rebate guidance.
Learn moreDuctwork & Duct Replacement
Testing, sealing, repair & full replacement — because leaky ducts waste the comfort you're paying for.
Learn moreNot sure what you need?
Describe what’s happening and we’ll tell you straight — 24/7, no obligation.
(818) 817-6005Put 25 years of experience on your side
Call (818) 817-6005 for 24/7 service across Los Angeles County and Orange County, or send the form and we'll call you back.
Call (818) 817-6005CA C-20 License #1094200 · 25years in business · Parts & labor guarantee
Request service online
Takes 30 seconds. We respond fast — 24/7.