5 Commercial HVAC Contractors in San Dimas, CA
Top-Rated Commercial HVAC Contractors in San Dimas
Western Air Mechanical
“346 customers awarded an aggregate 4.9-star rating, with six detailed reviews mentioning emergency same-day service and praising rapid response times.…”
Zach Taylor Heating And Air LLC
All Commercial HVAC Contractors (5 total)
Commercial HVAC Costs in San Dimas
Commercial system pricing in San Dimas. 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 San Dimas, CA: What to Expect
San Dimas sits in the inland valleys of the Los Angeles metro, where the Mediterranean climate brings mild winters and warm summers. Santa Ana winds regularly push temperatures past 100 F, creating spikes in air conditioning demand that make reliable Commercial HVAC in San Dimas essential for businesses. Five contractors serve this market, and their aggregate rating of 3.0 across 479 reviews reflects the mixed results business owners encounter when seeking dependable service.
Costs for commercial HVAC contracts vary based on system size and service scope. Annual maintenance for a rooftop unit ranges from $475 to $1900, while small business contracts under 5K square feet run $950 to $4750. Mid-size facilities between 5K and 25K square feet see annual costs from $3325 to $9500. California requires contractors to hold a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license from the Contractors State License Board, ensuring baseline qualifications for commercial work.
Customer feedback reveals distinct service approaches among top performers. Western Air Mechanical maintains a 4.9 rating from 346 reviewers, with clients praising emergency same-day response times and highlighting technicians Adrian and Chris for their swift service. Ameduri Heating & Air Conditioning Inc achieves a perfect 5.0 rating across 37 reviews, with customers specifically noting Derek's clear communication, punctuality, and thorough explanations of completed work.