Peterson Mechanical
Peterson Mechanical is a fourth-generation, family-owned mechanical contractor in Sonoma, California, delivering HVAC, plumbing, process piping, and refrigeration design-build and service across seven San Francisco Bay Area counties for healthcare, education, technology, winery, and commercial clients since 1915.
- Company typePrivate
- Founded1915
- HeadquartersSonoma, United States
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Peterson Mechanical does
Peterson Mechanical Inc. is a Sonoma, California-based mechanical contracting firm founded in 1915 and now in its fourth generation of Peterson family leadership. The company delivers HVAC, plumbing, process piping, custom sheet metal fabrication, and commercial refrigeration services to commercial, healthcare, education, technology, winery/hospitality, and residential customers across seven San Francisco Bay Area counties, with a 24/7 service department supporting ongoing maintenance and emergency response. Its revenue model is professional-services-based, driven by design-build, design-assist, plan/spec, and preconstruction delivery methods priced on a quote basis per project, with limited published unit pricing ($125 fall tune-up, $175 residential service fee referenced in a rebate program).
Core technical capability centers on a 3D BIM pipeline (Autodesk Fabrication, Revit, Navis Works, CAD Mech, CAD Duct) connected to in-house CMC duct fabrication and plumbing/piping prefabrication shops, supported by Trimble Total Station digital site layout and Field iPad/Plangrid drawing management for field crews. This digital-to-physical prefabrication flow compresses field labor, enables just-in-time delivery under tight schedules, and supports specialized work up to Class 10 clean rooms and OSHPD-regulated healthcare facilities.
The company operates with 130+ employees, including union-trained tradespeople (Sheet Metal Workers and United Association locals), in-house licensed civil and mechanical engineers (P.E.), CAD detailers, estimators, project managers, and fabricators. Customer concentration is diversified across major Bay Area health systems, universities (UCSF, SFSU, Sonoma State), technology and life-sciences firms (Agilent, BioMarin, Medtronic, Lawrence Berkeley National Laboratory), wineries (Chandon, Stag's Leap, Hall Wines), and commercial properties. Peterson maintains a private, family-owned capital structure with employee incentives via a 401(k) match and discretionary profit-sharing, no external PE/VC ownership, and consecutive North Bay Business Journal Best Places to Work recognition in 2021, 2022, and 2023.
Peterson Mechanical firmographics
Firmographics- Name
- Peterson Mechanical
- Legal name
- Peterson Mechanical, Inc
- Website
- https://petersonmechanical.com
- Company type
- Private
- Founded year
- 1915
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Peterson Mechanical is a fourth-generation, family-owned mechanical contractor in Sonoma, California, delivering HVAC, plumbing, process piping, and refrigeration design-build and service across seven San Francisco Bay Area counties for healthcare, education, technology, winery, and commercial clients since 1915.
- Ownership category
- akta.pro rank
Peterson Mechanical industry classification
Industry- Product category
- Mechanical Contracting Services
- NAICS
- Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing, Heating, and Air-Conditioning Contractors (23822), Building Equipment Contractors (2382)
- SIC
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Steam & Air-Conditioning Supply (4961)
- akta.pro primary industry
- HVAC & Refrigeration Contracting (IMAFALAB)
- akta.pro secondary industries
- Plumbing & Pipefitting Contracting (IMAFALAC), Industrial/Process Piping & Mechanical Contracting (IMAFALAG), Mechanical Piping, Pumps & Hydronics Maintenance (BPABACAB)
Keywords
Where Peterson Mechanical is headquartered
LocationHeadquarters
- HQ city
- Sonoma
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Peterson Mechanical business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- HVAC Services: Installation, repair, and maintenance of heating, ventilation, and air conditioning systems for residential and commercial customers. Operating 24/7 service department.
- Mechanical Construction: Full-service mechanical construction including HVAC, plumbing, process piping, custom sheet metal fabrication, and commercial refrigeration. Services range from new construction to retrofits.
- Design-Build Services: In-house engineering taking mechanical portion of projects from pre-planning through start-up and commissioning. Includes design-assist and plan/spec delivery methods.
- Preconstruction Services: Preconstruction phase services including estimating/budgeting, constructability review using BIM, and value engineering to reduce project costs and improve schedules.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Residential Fall Tune-Up Special |
| Unit Pricing | Pay-as-you-go | Residential Service |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels4 records
Peterson Mechanical product offering
Product offeringCore offering
Peterson Mechanical is a full-service mechanical contractor designing, installing, and maintaining HVAC, plumbing, process piping, medical gas systems, clean rooms, and commercial refrigeration for commercial, residential, and industrial customers throughout the San Francisco Bay Area. Services are delivered via Design-Build, Design-Assist, Plan/Spec, and Preconstruction methods, supported by in-house licensed engineers, BIM-based 3D modeling, and on-site prefabrication of ductwork and piping. A 24/7 service department handles ongoing repair, maintenance, and indoor air quality work for both homeowners and facility operators.
Product overview
Peterson Mechanical operates as a unified service platform providing comprehensive mechanical construction services rather than a modular software product. The company offers an integrated portfolio of services centered around HVAC (heating, ventilation, and air conditioning), plumbing, and refrigeration. Core offerings include Commercial and Residential HVAC Services, Boiler/Chiller/Cooling Tower Repair, Design-Build and Design-Assist delivery methods, Preconstruction Services, and Build Services (including plumbing, hydronic piping, medical gases, process piping, and sheet metal fabrication). Specialized capabilities include Clean Room/HEPA Systems for technology manufacturing and Commercial Refrigeration for wineries and food processing. All services are delivered through in-house licensed engineers, CAD/BIM detailers, and union-trained tradespeople using technologies including 3D CAD, BIM modeling, and prefabrication.
Differentiator
Problem solved
Functional benefit
Products and services
- Commercial HVAC Services Installation, repair, and maintenance of commercial heating, ventilation, and air conditioning systems including packaged rooftop units, VAV systems, chilled water, hydronic heat, and exhaust systems for facilities throughout the Bay Area.
- Residential HVAC Services Installation, repair, and maintenance of home heating and air conditioning systems for homeowners in Sonoma, Marin, and Napa counties, supported by a 24/7 service department.
- Boiler Repair Services Repair and upkeep services for water boilers including tank and tankless systems, ensuring well-functioning hot water systems for residential and commercial applications.
- Chiller Repair Services Installation, repair, replacement, and maintenance of industrial chillers used in HVAC systems, plastic production, food processing, medical facilities, and chemical manufacturing.
- Cooling Tower Repair Services Repair and maintenance services for industrial cooling towers that remove heat from commercial buildings through water circulation and evaporation.
- Design-Build Services Turnkey mechanical systems delivery from pre-planning through start-up and commissioning, including system selection, LEED certification support, energy modeling, and code compliance analysis, with the firm serving as single point of responsibility.
- Design-Assist Services Collaborative design delivery method working with design teams to produce fully coordinated, constructible design documents while identifying value-engineering opportunities.
- Preconstruction Services Early-phase services including estimating/budgeting, constructability review, and value engineering to reduce project costs and improve schedules before construction begins.
- Build Services Mechanical construction execution including HVAC installation, plumbing, hydronic piping, commercial and industrial air conditioning, boilers, pumps, chillers, towers, clean room/HEPA systems, medical gases, process piping, custom sheet metal fabrication, and on-site prefabrication.
- Process Piping & Commercial Plumbing Design, fabrication, and installation of process piping systems including process water, steam, high-purity air, gases, vacuum, fuel, medical gases, boilers, chillers, pumps, tanks, and cooling towers for various facility types.
- Commercial Refrigeration Design and installation of commercial refrigeration systems including constant refrigerant volume DX cooling, heat pumps, dehumidification systems, walk-in freezers and coolers, and winery refrigeration systems.
- Indoor Air Quality Services Solutions for improving indoor air quality through HVAC maintenance, ventilation improvements, air filtration, and humidity control for homes and commercial buildings.
Quantifiable outcome
- Safety EMR rate always below 1
- +2 more outcomes
Companies that use Peterson Mechanical
Customer profileNamed customers25 records
Segments6 records
Ideal customer profiles5 records
Peterson Mechanical technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Peterson Mechanical partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core.
- Union Locals 38, 104, 342, 343coreCollaborative relationship with four different unions that provides access to trained tradespeople. Union workforce enables skilled labor availability for large projects and collective bargaining for employee benefits.
- CarriercoreCompany became a Carrier Authorized Dealer (1970s), enabling sales and service of Carrier HVAC equipment. Partnership provides access to one of the world's leading HVAC manufacturers.
- SMACNA (Sheet Metal and Air Conditioning Contractors' National Association)coreIndustry association membership providing standards, training, and networking. Les Peterson served as president of SMACNA in 2007, demonstrating leadership in the industry.
- US Green Building CouncilcoreMembership supporting LEED certification projects. In-house LEED Accredited professionals help clients achieve desired certification levels.
- ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers)coreIndustry standards organization providing technical guidance for HVAC design and installation.
- MCAA (Mechanical Contractors Association of America)coreIndustry association representing mechanical contractors.
- IAPMO (International Association of Plumbing and Mechanical Officials)coreOrganization providing code development and enforcement for plumbing and mechanical systems.
- LCI (Lean Construction Institute)coreSelected by LCI NorCal for lean company projects. Actively implements lean concepts including 5S, pull planning, and PDCA. Company participated in a 5S project reporting.
- Sheet Metal Workers International AssociationcoreLabor union partnership for sheet metal workers providing skilled workforce.
- United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting IndustrycoreLabor union partnership for plumbers and pipefitters providing skilled workforce.
Scale indicators3 records
Recent moves8 records
Expansion highlights5 records
Peterson Mechanical competitors and assessment
Company assessmentBroad incumbents
- APi Group: Publicly-traded provider of safety, specialty, and industrial services including mechanical contracting — broader portfolio but meaningful overlap in mechanical services for commercial and institutional customers.
- EMCOR Group: Large publicly-traded mechanical and electrical services firm with significant commercial, healthcare, and institutional exposure — broader portfolio and geographic reach than Peterson, but overlapping service lines and customer base.
Direct peers
- Marek Brothers Systems: Texas-based but increasingly Western-region mechanical and drywall contractor serving commercial, healthcare, and institutional customers with prefabrication capabilities — comparable trade mix and enterprise project delivery.
- Southland Industries: Privately-held mechanical contractor with design-build, prefabrication, and BIM-driven MEP delivery for healthcare, tech, and commercial customers — closest scale and capability peer to Peterson in the Western U.S.
- ACCO Engineered Systems: Western U.S. mechanical contractor providing HVAC, plumbing, and process systems with in-house engineering and prefabrication; competes directly with Peterson for Bay Area healthcare, lab, and commercial projects.
- Comfort Systems USA: National mechanical contractor focused on HVAC, plumbing, and piping for commercial and industrial customers; comparable in core trade offerings and enterprise project delivery, though operating at much larger scale across multiple regions.
- Limbach Holdings: Publicly-traded specialty mechanical contractor providing HVAC, plumbing, and building services to healthcare, commercial, and institutional customers — directly comparable in scope, customer verticals, and design-build delivery model.
Regional players
- Murray Company: Western U.S. mechanical contractor focused on commercial, healthcare, and industrial projects with design-build and prefabrication capabilities — comparable delivery model and customer verticals.
- Pan-Pacific Mechanical: Northern California-based mechanical contractor specializing in HVAC, plumbing, and process piping for healthcare, biotech, and commercial customers — direct Bay Area overlap with Peterson.
Others
- Carrier Global: Global HVAC equipment OEM and Peterson's authorized dealer partner; comparable through its Trane Technologies / Carrier commercial HVAC installed-base services business, though primarily a manufacturer rather than a contractor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Peterson Mechanical social profiles
Digital presencePeterson Mechanical compliance and trust
Trust signalCompliance12 records
Peterson Mechanical financial estimates
Financial estimateRevenue estimate
Valuation estimate
Peterson Mechanical leadership team
Management profileNumber of profiles
Profiles4 records
Peterson Mechanical funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Peterson Mechanical M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Peterson Mechanical
What does Peterson Mechanical do?
Peterson Mechanical is a full-service mechanical contractor designing, installing, and maintaining HVAC, plumbing, process piping, medical gas systems, clean rooms, and commercial refrigeration for commercial, residential, and industrial customers throughout the San Francisco Bay Area. Services are delivered via Design-Build, Design-Assist, Plan/Spec, and Preconstruction methods, supported by in-house licensed engineers, BIM-based 3D modeling, and on-site prefabrication of ductwork and piping. A 24/7 service department handles ongoing repair, maintenance, and indoor air quality work for both homeowners and facility operators.
Is Peterson Mechanical a public or private company?
Peterson Mechanical is a private company. It is classified as family owned and is currently operating.
When was Peterson Mechanical founded?
Peterson Mechanical was founded in 1915. It employs 51 to 100 people.
Where is Peterson Mechanical based?
Peterson Mechanical is headquartered in Sonoma, United States, in the North America region.
How does Peterson Mechanical make money?
Four revenue lines are on record. HVAC Services are the primary driver. The others are mechanical Construction, design-Build Services and preconstruction Services.
Who are Peterson Mechanical's main competitors?
Broad incumbents on record are APi Group and EMCOR Group. Direct peers are Marek Brothers Systems, Southland Industries, ACCO Engineered Systems, Comfort Systems USA and Limbach Holdings. Regional players are Murray Company and Pan-Pacific Mechanical. Carrier Global is listed as an others.
Does Peterson Mechanical have an API?
No public API is recorded for Peterson Mechanical.
What industry is Peterson Mechanical in?
Peterson Mechanical's product category is Mechanical Contracting Services. Its primary akta.pro industry code is IMAFALAB, HVAC & Refrigeration Contracting, with a secondary code of IMAFALAC, Plumbing & Pipefitting Contracting. Its NAICS code is 238220 and its SIC code is 3585.