5 Commercial HVAC Contractors in Sonoma, CA
Top-Rated Commercial HVAC Contractors in Sonoma
Fuse HVAC & Appliance Repair Sonoma
“Every reviewer awarded 5 stars, with customers specifically praising response speed, technician competence, and transparent communication about parts and…”
Sonoma County Heating and Air
“All 19 reviews award 5 stars, with multiple clients specifically naming Kenta as the technician who handled their heater installation, AC repair, or heat pump…”
All Commercial HVAC Contractors (5 total)
Commercial HVAC Costs in Sonoma
Commercial system pricing in Sonoma. 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 Sonoma, CA: What to Expect
Sonoma sits in wine country roughly 55 miles north of San Francisco, where Pacific marine air keeps summer temperatures mild with July highs averaging 79 degrees and only about eighteen days pushing past 90. Yet inland positioning means occasional heat events still climb above 100, while cool rainy winters demand heating for five to six months each year. Most older homes here lack air conditioning, and the 2017 Tubbs Fire prompted widespread rebuilds that sparked a surge in AC installations across the region. Six contractors serve Commercial HVAC in Sonoma needs, maintaining an average 5.0 rating across 244 reviews, though none currently offer around-the-clock service.
California requires HVAC contractors to hold the C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license from the CSLB, ensuring baseline expertise. Annual maintenance per rooftop unit runs $475 to $1,900, while small business contracts covering spaces under 5,000 square feet range from $950 to $4,750. Mid-size commercial buildings between 5,000 and 25,000 square feet see annual contract costs between $3,325 and $9,500, with gas furnaces remaining the dominant heating choice in this market.
Reviewers consistently highlight response speed and transparent communication as key differentiators. At Fuse HVAC & Appliance Repair Sonoma, every reviewer awarded five stars, praising technicians for clear explanations of parts and timelines. Sonoma County Heating and Air clients specifically name Kenta for heater installations, AC repairs, and heat pump service, while Peterson Mechanical Inc. reviewers mention technicians Kyle and Justin for diagnostic skill and ductwork expertise.