Orange County service area
HVAC Services in Santa Ana, CA
Santa Ana is Orange County's urban core — historic neighborhoods like Floral Park and French Park, dense apartment communities, and one of the county's largest small-business districts. United Heating & Air Conditioning has served this range of buildings for 25 years.
- 25 Years in Business
- 24/7 Emergency Service
- CA C-20 License #1094200
- Parts & Labor Guarantee
- Lifetime Guarantee
- Discounts Available
A contractor that knows Santa Ana
Santa Ana's housing runs older than most of OC, which means aging furnaces, wall heaters, and add-on AC systems nearing the end of their lives. Our approach here is straightforward: honest diagnosis, fair repairs, and replacement advice without pressure.
Local insight
Santa Ana's historic homes — some of Orange County's oldest — need contractors who respect both the architecture and the budget. We repair aging systems honestly and design upgrades that fit these homes, from Floral Park estates to compact bungalows.
Why Santa Ana calls United Heating & Air Conditioning
- 25 years serving LA & Orange County
- Licensed C-20 HVAC contractor
- 24/7 emergency response
- Parts & labor guarantee
- Lifetime guarantee on installations
- Discounts available — ask when you call
Licensed C-20 work in Santa Ana — honest recommendations, guaranteed results, since 2001.
HVAC services available in Santa Ana
HVAC Emergency in Santa Ana?
No heat. No cooling. No waiting until morning.
We answer 24 hours a day, 7 days a week — nights, weekends, and holidays — across Santa Ana and 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
HVAC in Santa Ana — common questions
Do you work on both homes and businesses in Santa Ana?
Yes — residential systems across Santa Ana's neighborhoods and light commercial HVAC for the shops, restaurants, and offices in the downtown and South Coast Metro areas.
Can you repair an older furnace, or will you just push a replacement?
We repair what's sensible to repair. If your furnace has safe, serviceable life left, we'll fix it and tell you what to watch. When replacement genuinely is the better economics, we'll show you why on the equipment itself.
Need HVAC service in Santa Ana?
Call (818) 817-6005 — 24/7, including emergencies — or send the form and we'll get back to you fast.
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.