Peterson Mechanical, Inc.

21819 8th Street, Sonoma, CA, 95476

5.0(12 Google reviews)View on Google

Chilled Water/ChillerBoilerAHUCooling TowerRTUSplit System

Quick Answers

Is Peterson Mechanical, Inc. a well-reviewed commercial HVAC company in Sonoma?

Peterson Mechanical, Inc. holds a 5-out-of-5 rating on Google from verified reviewers in Sonoma, CA, with customers citing professional staff, competitive pricing, and technically skilled technicians. Reviewers specifically highlight the company's ability to handle complex commercial work, from large-scale HVAC installations to tricky diagnostic calls on modern thermostat systems.

Who installs multi-zone commercial HVAC systems in Sonoma?

Peterson Mechanical, Inc., based in Sonoma, CA, installs multi-zone commercial HVAC systems including rooftop units, air handling units, chilled water systems, and split systems for office buildings, healthcare facilities, hotels, educational institutions, and industrial facilities within a 25-mile service radius. The company has in-house licensed civil and mechanical engineers and offers full design-build services, including 3D BIM modeling and LEED-compliant design, supporting complex multi-zone projects from preconstruction through completion.

Does Peterson Mechanical, Inc. provide preventive maintenance for commercial HVAC systems?

Peterson Mechanical, Inc. provides commercial HVAC service for systems including boilers, chillers, cooling towers, rooftop units, and air handling units across Sonoma and the surrounding Bay Area. Customer reviews confirm the company's technicians perform thorough diagnostic and service work, staying on-site until systems are confirmed fully operational.

About

Peterson Mechanical, Inc. is a Bay Area mechanical contractor headquartered in Sonoma, CA, serving commercial and industrial facilities within a 25-mile radius with HVAC installation, repair, and design-build services dating back to 1915. The company holds in-house licensed civil and mechanical engineers and offers a full design-plan-build delivery model, including preconstruction budgeting, 3D BIM coordination, LEED and green design, and lean construction methods. This integrated capability allows facility managers at hospitals, schools, hotels, office buildings, warehouses, and multifamily properties to work with a single contractor from concept through commissioning. On the mechanical systems side, Peterson Mechanical services chilled water and chiller systems, boiler systems, cooling towers, rooftop units, air handling units, and split systems. The company also performs custom sheet metal fabrication in-house, hydronic piping, medical gas, clean room and HEPA system work, and process piping — making it a viable resource for technically demanding environments like healthcare and industrial facilities. Verified Google reviewers consistently rate Peterson Mechanical 5 out of 5 stars, pointing to on-time technicians, clean jobsite practices, and technicians who diagnose difficult problems without shortcuts. One reviewer noted the company's capability spans from residential work to skyscrapers, reflecting the breadth of the firm's commercial portfolio across the Sonoma and broader Bay Area market.

Frequently Asked Questions

What building types does Peterson Mechanical, Inc. serve in the Sonoma area?

Peterson Mechanical serves healthcare facilities, educational institutions, office buildings, hotels and hospitality properties, industrial and warehouse facilities, and multifamily buildings within a 25-mile radius of Sonoma, CA. The company's design-build capabilities make it well-suited for facilities with complex mechanical requirements such as hospitals and clean-room environments.

Does Peterson Mechanical offer design-build services for commercial HVAC projects?

Yes, Peterson Mechanical offers a full design-plan-build delivery model supported by in-house licensed civil and mechanical engineers. Services include 3D BIM modeling, LEED and green design, preconstruction budgeting, code compliance review, and lean construction planning, giving facility managers a single accountable contractor for large-scale mechanical projects.

Can Peterson Mechanical handle chiller and cooling tower repair in addition to standard HVAC service?

Peterson Mechanical provides dedicated repair services for chiller systems and cooling towers, in addition to boiler repair, air handling unit service, rooftop units, and split systems. This breadth of hydronic and air-side mechanical coverage is particularly relevant for larger commercial buildings in Sonoma that rely on central plant equipment.

Does Peterson Mechanical fabricate ductwork and piping in-house?

Peterson Mechanical operates in-house CMC duct fabrication and piping prefabrication capabilities, which can reduce lead times and improve quality control on commercial projects. The company also uses digital layout tools and field iPad integration with plan management software to coordinate installations accurately on-site.

What Carrier or brand HVAC systems has Peterson Mechanical installed for commercial clients?

A verified reviewer confirms Peterson Mechanical installed a Carrier HVAC system and described the installation crew as knowledgeable and competent. The company's broader commercial scope covers rooftop units, air handling units, chilled water systems, boilers, and split systems, though facility managers should contact Peterson Mechanical directly for brand availability on specific commercial projects.

Equipment & Systems

System Types Serviced

Chilled Water / ChillerBoilerAir Handling Unit (AHU)Cooling TowerRooftop Unit (RTU)Split System

Building Types Served

Healthcare / Medical

Education / Campus

Office Building

Hospitality / Hotel

Industrial / Warehouse

Multifamily (50+ units)

Operating Hours

Monday	7:00 AM – 4:00 PM
TuesdayToday	7:00 AM – 4:00 PM
Wednesday	7:00 AM – 4:00 PM
Thursday	7:00 AM – 4:00 PM
Friday	7:00 AM – 4:00 PM
Saturday	Closed
Sunday	Closed

License & Insurance

Insurance VerifiedNot verified

Location

21819 8th St E, Sonoma, CA 95476, USA

Request a Quote

Avg. response in 4 hours

Commercial Capabilities

24/7 AvailabilityNo

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Google Reviews

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5 years ago

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!

— sally rossi

3 years ago

Trouble with Nest thermostat (PG&E supplied). Justin came out, on time, and diagnosed the problem which was a bit tricky and didn’t leave until he was certain it was operating.

— Robert Smith

9 years ago

Peterson Mechanical installed a new Carrier HVAC system in our house. Their staff were very knowledgeable, provided a competitive price and their installer was very competent. Highly recommend them for HVAC maintenance, repair and installation work.

— Paul Kenny

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