Business Details
50+ Years
experience
Emergency
services
Trusted HVAC Contractors in Sonoma Since 1915
Peterson Mechanical has been a trusted leader in mechanical construction and HVAC services since 1915. Our century-long commitment to excellence is built on a foundation of integrity, innovation, and customer satisfaction. We specialize in delivering high-quality mechanical systems for commercial, residential, healthcare, technology, and hospitality sectors across the San Francisco Bay Area. Our team of licensed engineers, skilled technicians, and construction professionals leverages cutting-edge technology like BIM and 3D CAD design to ensure precision and efficiency in every project. From design and preconstruction planning to fabrication and 24/7 service support, we prioritize safety, sustainability, and client collaboration.With decades of experience in complex projectsfrom high-rise HVAC systems to medical gas installationswe maintain rigorous standards while adapting to evolving industry demands. Our affiliations with organizations like ASHRAE and the US Green Building Council underscore our dedication to quality and environmental responsibility. Whether handling emergency repairs or large-scale construction, we remain a family-owned company rooted in the values of honesty and service that have defined us since our founding in Sonoma Valley.
Services
HVAC Installation
Plumbing Systems
Boiler Repair
Chiller Maintenance
Cooling Tower Services
Design-Build Projects
24/7 Emergency Service
Medical Gas Installation
Process Piping
Custom Sheet Metal Fabrication
Details
- Year established: 1915
Highlights and features
- We offer 100+ years of experience in mechanical construction and HVAC services.
- Our in-house licensed engineers ensure precise design and code compliance.
- 24/7 emergency service guarantees rapid response for critical systems.
- We utilize BIM and 3D CAD technology for efficient project execution.
- Competitive pricing through lean construction and just-in-time delivery.
Associations and certifications
- SMACNA
- US Green Building Council
- ASHRAE
- MCAA
- IAPMO
- LCI-Lean Construction Institute
- Sheet Metal Workers International Association
- United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of The United States
Services
HVAC Installation
Peterson Mechanical specializes in installing commercial and residential HVAC systems, including high-rise air conditioning, heat pumps, and VRF systems. Our team ensures energy efficiency and compliance with local codes. We use advanced BIM technology to coordinate installations seamlessly with other building systems.
Boiler Repair
We offer comprehensive boiler repair, maintenance, and replacement for residential and commercial clients. Our technicians address leaks, burner issues, and efficiency improvements, ensuring safe and reliable operation for both traditional and tankless systems.
Chiller Maintenance
Our experts provide repair, replacement, and preventive maintenance for industrial and commercial chillers. We assess system age, efficiency, and repair costs to recommend optimal solutions for critical cooling applications in tech and healthcare facilities.
Cooling Tower Repair
We service industrial cooling towers with scale removal, airflow optimization, and component replacement. Our maintenance plans improve efficiency, reduce environmental risks, and ensure compliance with safety regulations for commercial and manufacturing clients.
Design-Build Projects
Our in-house engineers deliver end-to-end design-build solutions, integrating HVAC, plumbing, and refrigeration systems. We use 3D CAD and BIM to streamline construction, reduce costs, and meet project deadlines for complex commercial and healthcare facilities.
Questions
What HVAC services does Peterson Mechanical offer?
We provide commercial and residential HVAC installation, repair, maintenance, and design-build solutions, including boiler, chiller, and cooling tower services.
Do you serve areas outside Sonoma County?
Yes, we serve all Northern California counties, including Marin, Napa, San Francisco, and Alameda.
Are your technicians available for emergencies?
Our 24/7 service team responds to urgent HVAC and mechanical system issues across the Bay Area.
What industries do you specialize in?
We specialize in healthcare, technology, education, hospitality, wineries, and high-rise residential projects.
Do you offer design and preconstruction services?
Yes, we provide in-house design-build, BIM modeling, and preconstruction budgeting to optimize project efficiency.
How does Peterson Mechanical ensure project quality?
We use lean construction methods, 3D CAD technology, and rigorous code compliance checks to guarantee high-quality results.
Reviews (4)
Ginger S.
Oct 26, 2021
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Needed to have my heater upgraded to something more efficient. After calling in I was fit in immediately and a new unit put in within the week. It was difficult work for the 2 gentleman that arrived, but they worked quickly and left the place cleaner than when they arrived. I must commend the young gentleman Kyle on the professional quality work and exceptional customer service. He was extremely polite. I highly recommend this company, they employ quality professionals and I will continue to use them as the need arises.
Hilda Teran-Franklin
Sep 27, 2021
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Totally professional. From the front desk to completion of project. When they were putting in the new air/furnace system, I would forget they were here because they were so efficient and quiet.
Steven S.
May 19, 2021
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I cannot believe this company. They quoted a new furnace for my home in Sonoma in December 2020 for $4700. In May 2021 i contacted them to proceed with the installation. However, i was told the new price would be $9900. When i inquired how the price could increase more than 2x Scott Peterson, the owner, stated there had been 2 cost increases from the manufacturer of 7%. Really, so $4700. plus 14% now equals $9900?
When i questioned his price increase he responded that gas now cost $4/ gallon. Needless to say i will not be hiring this company. I guess their business philosophy is just get away with whatever you can and hope the customer goes along with it.
When i questioned his price increase he responded that gas now cost $4/ gallon. Needless to say i will not be hiring this company. I guess their business philosophy is just get away with whatever you can and hope the customer goes along with it.
Sally Rossi
Mar 14, 2021
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My ductwork was in shambles. This Company not only gave me the best price, they also were the most professional and polite staff I have ever seen! They were clean, cordial, respectful of my house and pets and knew what they were doing! Especially Kyle, who went the extra mile by leaving me a note regarding their progress and when I could expect them to return and finish. This is an all around great Company, use with confidence!
