Orange County service area
HVAC Services in Aliso Viejo, CA
Aliso Viejo was built almost entirely in the 1990s — which means the city's original HVAC equipment is aging out together, neighborhood by neighborhood. United Heating & Air Conditioning helps Aliso Viejo owners repair, plan, and replace on their own timeline.
- 25 Years in Business
- 24/7 Emergency Service
- CA C-20 License #1094200
- Parts & Labor Guarantee
- Lifetime Guarantee
- Discounts Available
A contractor that knows Aliso Viejo
The city's townhomes and condos add their own wrinkle: shared walls, tight equipment spaces, and HOA rules. After 25 years of South County work, these constraints are familiar ground for us.
Local insight
As a city built in one decade, Aliso Viejo's systems hit end-of-life in waves — and its high share of townhomes means compact equipment, tight placements, and HOA coordination are part of nearly every job. We're built for exactly that.
Why Aliso Viejo 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 Aliso Viejo — honest recommendations, guaranteed results, since 2001.
HVAC services available in Aliso Viejo
HVAC Emergency in Aliso Viejo?
No heat. No cooling. No waiting until morning.
We answer 24 hours a day, 7 days a week — nights, weekends, and holidays — across Aliso Viejo 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 Aliso Viejo — common questions
My Aliso Viejo townhome's system is original — what should I expect?
1990s systems are past design life. An inspection tells us the real condition; many can run a few more seasons with the right repair, but you should have a replacement plan before it picks the timing for you.
Can you replace HVAC in a townhome with very limited equipment space?
Yes — compact and slim-profile equipment, horizontal attic installations, and closet air handlers all solve Aliso Viejo's tight-space layouts. We've handled these floor plans many times.
Need HVAC service in Aliso Viejo?
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
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