21 Commercial HVAC Contractors in Fullerton, CA
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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
“Teo earns mentions in two separate five-star reviews for diagnosing hidden tire damage and completing complimentary repairs. Four reviewers highlight same-day…”
All Commercial HVAC Contractors (21 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…”
Delta-Q, Inc.
“Three of five reviewers awarded five stars and specifically mentioned staff members by name, noting their…”
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…”
Total Refrigeration & Air Conditioning
“The sole review on record awards Total Refrigeration & Air Conditioning a perfect 5 stars. Austin P.…”
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 sits inside the Los Angeles metro’s mild Mediterranean zone, but inland heat spikes and Santa Ana winds push cooling needs higher, creating variable demand for commercial systems. That variability keeps local businesses seeking reliable service: 21 contractors list commercial-hvac Fullerton service, averaging a 3.9 rating across 1,294 reviews, and nine firms advertise 24/7 availability to handle urgent failures during peak heat.
Detailed top cost items weren’t supplied in the data, so exact figures aren’t available here; costs typically depend on system size, efficiency ratings, ductwork modifications, and whether the work is retrofit or new construction. California requires that HVAC firms hold a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning license from the CSLB, so bids should clearly state licensing, insurance, and the specific equipment models included in estimates to avoid unexpected expenses.
Customer highlight entries were not included in the provided data, so patterns must be inferred from market conditions: responsiveness, documented preventive maintenance plans, and clear warranty terms tend to correlate with higher review scores. Given the metro’s mix of mild and extreme days, prioritize contractors who offer scheduled tune-ups plus emergency service, confirm C-20 licensure, and verify recent reviews for consistent on-time completion and accurate invoicing.
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All HVAC Contractors in Fullerton, CA
Complete directory of 55 contractors — browse alphabetically
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All HVAC Contractors in Fullerton, CA
Complete directory of 55 contractors — browse alphabetically