Licensed C-20 AC Repair
24/7 Emergency Available
AC Repair in Los Angeles & Orange County
When your air conditioner stops cooling in the middle of a Southern California heat wave, every hour matters. United Heating & Air Conditioning has repaired residential and commercial AC systems across Los Angeles County and Orange County for 25 years — and our team answers the phone 24/7.
- 25 Years in Business
- 24/7 Emergency Service
- CA C-20 License #1094200
- Parts & Labor Guarantee
- Lifetime Guarantee
- Discounts Available
Why United Heating & Air Conditioning for AC repair
We diagnose and repair all major brands and system types: central air, split systems, ductless mini-splits, heat pumps, and rooftop package units. Every repair is performed by a licensed C-20 contractor and backed by our parts & labor guarantee, so the fix holds.
Accurate diagnosis, not guesswork
After 25 years and thousands of repairs across LA and OC, our technicians identify the real fault — compressor, capacitor, refrigerant leak, board, or airflow — before recommending any work.
Repairs that are guaranteed
Our parts & labor guarantee covers the work we do. If something we repaired fails, we make it right.
24/7 emergency response
AC failures don't wait for business hours. Neither do we. Call any time, day or night, weekends and holidays included.
Honest repair-vs-replace advice
If a repair is the smart move, we repair it. If your system is at the end of its life, we'll tell you plainly and show you the numbers — no pressure.
HVAC Emergency?
No heat. No cooling. No waiting until morning.
We answer 24 hours a day, 7 days a week — nights, weekends, and holidays — across all of Los Angeles County and Orange County.
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
Related services
Where we provide AC repair
AC Repair is available across both counties — every city, every neighborhood, 24/7 for emergencies.
Popular service areas
AC Repair — common questions
Do you offer emergency AC repair in Los Angeles and Orange County?
Yes. United Heating & Air Conditioning runs 24/7 emergency AC repair across all of LA County and Orange County. Call (818) 817-6005 any time and you'll reach our team, not an answering machine.
What AC brands and systems do you repair?
We repair all major brands and system types — central air conditioners, ductless mini-splits, heat pumps, and rooftop package units for homes and light commercial buildings.
Is the repair guaranteed?
Yes. Our work is backed by a parts & labor guarantee. If a repair we performed fails, we return and make it right.
Should I repair or replace my air conditioner?
It depends on the system's age, the cost of the fault, and its efficiency. Our technician will give you an honest assessment on site — including when a repair is clearly the better value. We never push replacement when a repair makes sense.
Are you a licensed AC contractor?
Yes. United Heating & Air Conditioning holds CA State Warm-Air HVAC License C-20 #1094200 and has been in business for 25 years.
Need AC repair? Let's handle it.
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.