Commercial HVAC Services - Peterson Mechanical
Bay Area Plumbing & Mechanical Contractor Since 1915

Peterson Mechanical's 100+ Year Anniversary Logo

Our commercial HVAC experts meet the needs of businesses throughout the North Bay Area.

Safety First

Commercial HVAC Installation and Repair

HVAC systems account for roughly 50 percent of the energy used in commercial buildings. What’s more, they directly affect occupants’ health, comfort, and productivity. Peterson Mechanical has been installing, repairing, and maintaining commercial HVAC systems in the Sonoma, Napa, and Marin counties since 1915. Our HVAC service technicians have the expertise to ensure that your commercial heating and cooling systems are operating at peak performance.


From new system installation to repairs and preventive maintenance, Peterson Mechanical is your full-service commercial Santa Rosa HVAC specialist. We can help you improve your commercial building’s HVAC performance to help save energy and promote a healthier, more comfortable environment.

  • 24/7 service
  • Maintenance programs
  • Central heating & air conditioning
  • Heat pumps
  • Exhaust fans
  • Critical systems
  • Gas/LP propane furnaces
  • Evaporative coolers
  • Packaged units
  • Boilers
  • Chillers
  • VRF/ductless systems
  • Cooling towers


  • 24/7 Availability: The Peterson team stands ready around the clock to react to all situations—from emergency repairs to customer support.
  • GPS Dispatch : Peterson uses GPS dispatch technology to help us respond quickly and efficiently to your service calls.
  • Minimal Disruption : We complete all installations, repairs, and maintenance as quickly as possible with minimal disruption.


At Peterson Mechanical, we understand the importance of an optimally performing HVAC system to your business. To request more information about Peterson’s commercial HVAC services in the Sonoma, Marin, and Napa counties or request a free estimate, please contact us today.

Free Estimate

Quality & Safety from Design to Build

Our full-service HVAC company has perfected high-quality mechanical engineering projects under strict safety guidelines in the following sectors:

Proud to Serve Northern California Since 1915

  • Contra Costa County
  • Marin County
  • Napa County
  • San Francisco County
  • Solano County
  • Sonoma County

Peterson Mechanical provides top-rated commercial hvac install & repair to businesses throughout the North Bay Area, including Sonoma, Napa and Marin. We are full-service HVAC specialists, with expert knowledge of central HVAC, heat pumps, exhaust fans, furnaces, coolers, boilers and more. Peterson Mechanical is a Sonoma-based mechanical contractor and provides pre-construction, pre-fabrication, custom fabrication, design/build and plan/spec. solutions for San Francisco, Oakland, Sonoma, Napa and the surrounding areas.