Licensed C-20 Furnace Repair
24/7 Emergency Available
Furnace Repair in Los Angeles & Orange County
Most Southern California homes are heated by a gas furnace — and most furnaces fail the same predictable ways: ignition problems, failed blower motors, dirty flame sensors, cracked heat exchangers, control board faults. After 25 years of furnace work across LA County and Orange County, we've seen and fixed every one of them.
- 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 furnace repair
Furnace repair is also safety work. Gas, combustion, and venting demand a licensed professional. United Heating & Air Conditioning performs every furnace repair under CA C-20 license #1094200, with combustion safety checked on every visit.
Combustion safety on every call
We inspect the heat exchanger, venting, and gas connections as part of every furnace diagnosis — protecting your home from carbon monoxide risk, not just restoring heat.
25 years of furnace-specific experience
Ignitors, flame sensors, inducer motors, gas valves, control boards — we carry the common parts and know the common failure patterns of every major brand.
Repair-or-replace honesty
A cracked heat exchanger on a 20-year-old furnace is a replacement conversation. A failed ignitor on a 8-year-old one is a simple repair. We tell you which is which, straight.
Guaranteed parts & labor
Every furnace repair we perform is covered by our parts & labor guarantee.
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 furnace repair
Furnace Repair is available across both counties — every city, every neighborhood, 24/7 for emergencies.
Popular service areas
Furnace Repair — common questions
Why does my furnace turn on and then shut off right away?
Short-cycling is most often a dirty flame sensor, restricted airflow from a clogged filter, or an overheating limit switch. It's one of the most common furnace calls we run, and usually a same-visit fix.
Is a cracked heat exchanger really serious?
Yes. A cracked heat exchanger can allow carbon monoxide into your home's air. If we find one, we'll show you the evidence and walk you through the options — it's the one furnace problem you should never run the system with.
Do you repair older furnaces?
Yes, including older standing-pilot models common in LA's older housing stock. If parts are no longer available or the repair doesn't make economic sense, we'll tell you honestly.
Can you repair my furnace at night or on a weekend?
Yes — furnace failures are a 24/7 emergency for us. Call (818) 817-6005 any time.
Are you licensed for gas furnace work?
Yes. We hold CA State Warm-Air HVAC License C-20 #1094200 — the state license classification specifically covering warm-air heating systems.
Need furnace 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
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