22 Commercial HVAC Contractors in Fullerton, CA
Top-Rated Commercial HVAC Contractors in Fullerton
Avis Plumbing and Air
“Four separate five-star reviews specifically mention technician John or JR, praising his thorough diagnostics, patient explanations, and fair pricing on both…”
Eberhardt's Tire & Automotive
“With 239 reviews maintaining a 4.7-star average, customer feedback indicates consistent satisfaction in tire and automotive services. Review volume…”
All Commercial HVAC Contractors (22 total)
Mitch Clemmons Plumbing
“All five-star reviewers mention specific technicians by name, with Steven Cruz and Glen each appearing in…”
One Hour Heating & Air Conditioning
“The 4.9-star average across 70 reviews tells a story of dependable service, with technicians repeatedly…”
Tria Air conditioning Pros
“All 40 reviews carry 5-star ratings, with customers frequently naming technician Preston for his clear…”
LH Construction
“All 23 reviewers award 5 stars, with 6 specifically praising the crews for maintaining a spotless work area…”
Cool Air Fullerton
“Every one of the 18 reviewers awarded 5 stars, and most include specifics rather than vague praise. Four…”
Spotless Clean Air
“Every reviewer rated Spotless Clean Air five stars, with 15 total testimonials emphasizing thoroughness and…”
Rosag HVAC Solutions Fullerton
“All 12 reviewers award five stars, with six explicitly calling out the company's same-day response capability…”
Air Filter Supply
“Three of four negative reviews cite broken communication around order readiness: missed callbacks,…”
Coolsys Refrigeration & HVAC
“Three of four reviews rate this contractor at one star, citing dangerous driving incidents involving company…”
Heating & Air-Conditioning
“Five of eight reviewers awarded five stars, with all positive accounts mentioning prompt arrival and…”
EcoPath Vent Wash Solutions
“Both reviewers awarded 4 or 5 stars and use the word professional to describe their experience. One client…”
Refrigeration Unlimited
“Two of four reviewers awarded five stars, with Freddy Ventura highlighting exceptional customer service and…”
C & L Refrigeration
“The single five-star review praises C & L as a professional company and great place, providing baseline…”
Total Refrigeration & Air Conditioning
“The sole review on record awards Total Refrigeration & Air Conditioning a perfect 5 stars. Austin P.…”
Direct Air Conditioning
“One client review exists with a five-star rating, representing one hundred percent satisfaction from the…”
KNC AIR CONTROL
“One customer review yields a one-star rating, providing insufficient data to identify service patterns,…”
Electronic Environments
“No customer reviews have been submitted for Electronic Environments in Fullerton. Directory links to Google…”
Commercial HVAC Costs in Fullerton
Commercial system pricing in Fullerton. Actual costs vary significantly by building size and system type. Request a site-specific quote.
| Service | Low | Average | High |
|---|---|---|---|
Annual maintenance (per rooftop unit) Quarterly inspections | $475 | $950 | $1,900 |
Annual contract (small business, < 5K sqft) | $950 | $2,375 | $4,750 |
Annual contract (mid-size, 5K-25K sqft) | $3,325 | $6,175 | $9,500 |
Basic rooftop unit replacement | $6,175 | $9,500 | $14,250 |
Small business full system (< 5K sqft) | $7,600 | $15,200 | $23,750 |
Mid-size building (5K-25K sqft) | $23,750 | $47,500 | $76,000 |
Operating cost (per sqft annually) Utility + maintenance | $2 | $4 | $6 |
Prices reflect Pacific coast metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
Commercial HVAC in Fullerton, CA: What to Expect
Fullerton's position within the Los Angeles basin means businesses handle a climate that swings from mild to intense. Summer temperatures routinely climb into the 80s, and when Santa Ana winds sweep through the inland valleys, thermostats can spike past 100 F. That variability forces commercial properties to run cooling systems long and hard, then pivot quickly to heating during the cooler months. Twenty-one contractors currently serve the Commercial HVAC in Fullerton market, collectively earning a 3.9 average rating across nearly 1,300 reviews.
Those numbers matter because they represent real investment decisions. Annual maintenance on a single rooftop unit runs $475 to $1,900, while small business contracts covering spaces under 5,000 square feet typically cost $950 to $4,750 annually. Mid-size facilities between 5,000 and 25,000 square feet see annual contracts ranging from $3,325 to $9,500. Every dollar reflects the system's capacity, the building's efficiency, and service response expectations. In California, legitimate contractors must carry a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning license from the Contractors State License Board, a credential that verifies both technical competency and consumer protection.
Customers who leave feedback tend to notice two things: technical skill and turnaround speed. At Avis Plumbing and Air, multiple reviewers specifically call out technician John or JR for taking the time to explain diagnostics clearly and pricing work fairly. Elsewhere, response speed becomes the defining factor, with several companies earning praise for arriving within 30 minutes or finishing jobs the same day. Those patterns repeat across Fullerton's commercial HVAC providers, shaping which ones earn return calls and referrals.
Frequently Asked Questions
Other HVAC Services in Fullerton, CA
All HVAC Contractors in Fullerton, CA
Complete directory of 56 contractors — browse alphabetically
A–Z
All HVAC Contractors in Fullerton, CA
Complete directory of 56 contractors — browse alphabetically
A
- Advanced Climate Technologies
- AIR COMBAT USA, INC.
- Air Conditioning & Heating Repair
- Air Filter Supply
- Air Mighty Refrigeration and Air Conditioning
- All for your air - air conditioner repair
- All Seasons Cooling & Heating
- American Mechanical Services
- Anderson Air Conditioning L.P.
- Anthony's Reliable Heating & AC
- Avis Plumbing and Air