Licensed C-20 HVAC Maintenance
HVAC Maintenance & Tune-Ups in Los Angeles & Orange County
Almost every emergency call we run in July and December has the same backstory: a system that hadn't been serviced in years. Regular maintenance is the cheapest HVAC service you'll ever buy — and the one that prevents the most expensive ones.
- 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 HVAC maintenance
United Heating & Air Conditioning provides thorough AC and heating tune-ups across Los Angeles County and Orange County. Not a 10-minute filter swap — a real multi-point inspection that catches failing parts before they take the system down on the hottest week of the year.
Catch failures before they happen
Weak capacitors, dirty coils, low refrigerant, worn motors — the parts that cause summer breakdowns show warning signs months earlier. A tune-up finds them while the fix is still cheap.
Lower energy bills
Dirty coils and poor airflow force your system to work harder. A maintained system simply costs less to run through an LA or OC summer.
Longer equipment life
Well-maintained systems routinely outlast neglected ones by years — protecting the biggest comfort investment in your home.
Warranty protection
Most manufacturers require documented annual maintenance to keep equipment warranties valid. Our service visits give you that record.
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 HVAC maintenance
HVAC Maintenance is available across both counties — every city, every neighborhood, 24/7 for emergencies.
Popular service areas
HVAC Maintenance — common questions
How often should HVAC systems be serviced?
Twice a year is ideal in Southern California: cooling tune-up in spring before the heat arrives, heating tune-up in fall before the first cold night. Once a year is the minimum to keep most manufacturer warranties valid.
Is maintenance really worth it for a newer system?
Yes — arguably more so. Annual documented maintenance keeps the manufacturer warranty enforceable, and small issues like a clogged drain line can damage even a brand-new system.
Do you offer maintenance discounts?
Discounts are available — ask when you call (818) 817-6005 and we'll tell you what currently applies.
What happens if you find a problem during a tune-up?
We show you exactly what we found, explain the options, and quote the fix before doing anything. No surprise work, no pressure.
Do you maintain commercial HVAC systems?
Yes — we maintain light commercial systems, including rooftop package units, across LA and Orange County.
Need HVAC maintenance? 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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