Professional Commercial HVAC Services
Installation, repair, and maintenance for offices, retail spaces, and commercial properties.
HVAC Service Built Around Your Business
Commercial HVAC problems don't just affect comfort — they can affect your ability to stay open. We work with business owners and property managers to schedule service in a way that limits disruption to daily operations.
From rooftop package units to office and retail systems, we handle installation, repair, and ongoing maintenance for commercial properties.
- Upfront pricing
- Licensed & insured technicians
- Scheduling that limits downtime
What We Handle for Commercial Properties
Common commercial HVAC issues and services.
Rooftop Unit Failures
We diagnose and repair rooftop package units common in commercial buildings.
Air Balancing
Uneven temperatures across a space are often an airflow balancing issue.
Large Blower & Motor Issues
Commercial-grade blowers and motors require specific diagnostic experience.
Thermostat & Zoning
We troubleshoot multi-zone control issues common in offices and retail spaces.
Maintenance Agreements
Ongoing maintenance plans help catch issues before they lead to unexpected downtime.
What to Expect
A clear process that respects your business's schedule.
- 1
Call or Book Online
Reach out by phone or request service online — whichever is easier for you.
- 2
Site Assessment
We evaluate your equipment and facility needs.
- 3
Clear Recommendation
You get a straightforward recommendation and an upfront price for the work.
- 4
Scheduled Service
We coordinate timing to minimize disruption to your business.
- 5
Final Check
We confirm the system is running properly before we leave.
Why Choose Trust Heating & Air Conditioning
We're a local HVAC company that treats every home and business like it's our own — straightforward pricing, careful work, and technicians who take the time to do the job right.
Free Estimates
We provide free estimates on new installations and system replacements, so you know your options before committing to anything.
Same-Day Service
Comfort emergencies don't wait, so neither do we — same-day appointments available.
Financing Available
Flexible financing options are available for qualifying installations and larger repairs.
2-Year Labor Warranty
Every installation and repair is backed by a 2-year labor warranty for your peace of mind.
Residential & Commercial Expertise
From single-family homes to commercial properties, we bring the same standard of care.
All Major HVAC Brands
We install and service all major HVAC brands, including Carrier, Lennox, Trane, Daikin, Goodman, American Standard, and AC Pro.
Honest Service
You'll know the cost before any work begins — no surprises, no pressure to upsell.
Local Team
We're a local team serving West Covina, Los Angeles County, and San Bernardino County — not a call center.
Serving West Covina & Nearby Communities
We're based in West Covina and regularly serve communities throughout Los Angeles County and San Bernardino County. Depending on scheduling and the scope of the job, we sometimes take on projects further out too — if you're not sure whether we cover your area, give us a call and we'll let you know.
Commercial HVAC Questions
Do you work on rooftop package units?
Yes, we diagnose and repair rooftop units common in commercial buildings.
Can you schedule service outside business hours?
We work with you to schedule service in a way that limits disruption to your operations.
Do you offer maintenance agreements for commercial properties?
Yes, ongoing maintenance plans are available to help prevent unexpected downtime.
Do you service multi-zone commercial systems?
Yes, we troubleshoot and repair zoning and thermostat issues common in offices and retail spaces.
What types of commercial properties do you service?
We work with offices, retail spaces, and other commercial properties throughout our service area.
Do you work on rooftop package units?
Yes, we diagnose and repair rooftop units common in commercial buildings.
Can you schedule service outside business hours?
We work with you to schedule service in a way that limits disruption to your operations.
Do you offer maintenance agreements for commercial properties?
Yes, ongoing maintenance plans are available to help prevent unexpected downtime.
Do you service multi-zone commercial systems?
Yes, we troubleshoot and repair zoning and thermostat issues common in offices and retail spaces.
What types of commercial properties do you service?
We work with offices, retail spaces, and other commercial properties throughout our service area.
Ready to Get Started with Commercial HVAC?
Whether it's a small repair or a full system replacement, our team is ready to help — with honest pricing and no pressure.
- Licensed & Insured
- Same-Day Service
- Residential & Commercial