Therma
Therma is a California mechanical, fabrication, and HVAC services contractor (founded 1967, subsidiary of Legence) with 1,000+ employees serving semiconductor, biopharmaceutical, data center, healthcare, and industrial clients across three regional offices.
- Company typePrivate
- Founded1967
- HeadquartersSan Jose, United States
- Headcount1,001–5,000
- GTM typeB2B
- OfferingServices
What Therma does
Therma is a California-based mechanical, fabrication, and HVAC services contractor founded in 1967 by Joe and Nicki Parisi, operating as a subsidiary of Legence. The company employs 1,000+ staff across three regional offices — San Jose (headquarters), Pleasanton, and Orange County — and serves nine end-markets: Biopharmaceutical, Semiconductor, Data Center, Healthcare, Education, Food Processing, Commercial, Industrial, and Manufacturing. Notable clients include Intel, AMD, IBM, Fairchild, Novartis, Genentech, Amgen, Bayer, Merck, Stanford, and Taylor Farms, with project values historically ranging from approximately $1.1M to $36M (the latter being the 2011 Stanford GSB project).
The company's technical platform is anchored by long-tenured investment in digital design and precision fabrication: BIM capabilities since 1986, 3D Laser Scanning since 2013, an in-house Cleanroom Fabrication Facility, and a 2017-added hydro excavation capability that the company positions as unique among mechanical contractors. Process Systems capability, added in 2001, extends the offering into semiconductor and biopharmaceutical process piping — a higher-margin, regulated subset of mechanical work.
Therma's business model is project-based with a recurring maintenance overlay. Revenue is generated through competitive-bid mechanical construction, fabrication, and installation contracts, supplemented by service and maintenance agreements across installed bases in regulated facilities. Geographic concentration in California, combined with multi-year capex cycles in semiconductor and life sciences, creates project-cadence volatility offset by maintenance revenue stickiness. Subsidiary status under Legence provides access to broader energy and engineering services platform resources, though specific financial terms or integration milestones are not disclosed.
Therma firmographics
Firmographics- Name
- Therma
- Legal name
- Therma
- Website
- https://therma.com
- Company type
- Private
- Founded year
- 1967
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- Therma is a California mechanical, fabrication, and HVAC services contractor (founded 1967, subsidiary of Legence) with 1,000+ employees serving semiconductor, biopharmaceutical, data center, healthcare, and industrial clients across three regional offices.
- Ownership category
- akta.pro rank
Therma industry classification
Industry- Product category
- Mechanical Contracting & HVAC Services
- NAICS
- Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334)
- SIC
- Refrigeration & Service Industry Machinery (3580), Special Industry Machinery (No Metalworking Machinery) (3550)
- akta.pro primary industry
- HVAC & Refrigeration Contracting (IMAFALAB)
- akta.pro secondary industry
- Pharmaceutical & Biotech Manufacturing Facility Construction (IMAFADAI)
Keywords
Where Therma is headquartered
LocationHeadquarters
- HQ city
- San Jose
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Therma 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
- Mechanical Construction Projects: Design-build mechanical construction services for commercial, industrial, biopharmaceutical, semiconductor, data center, and other facilities. Revenue generated through project-based contracts for HVAC, plumbing, and process systems installation.
- Maintenance Services: Ongoing maintenance contracts and service agreements providing preventive maintenance, reactive repairs, and system optimization for existing client facilities. First maintenance contract sold in 1981, establishing the Therma Service Division.
- Fabrication: Custom fabrication services including sheet metal, process piping, and specialized components for mechanical systems.
- Process Systems and Controls: Process systems and industrial process automation services added to offerings in 2001, serving semiconductor and manufacturing clients.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based pricing varies by scope and complexity |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Therma product offering
Product offeringCore offering
Therma is a full-service mechanical contractor that delivers design-build construction, custom fabrication, and ongoing maintenance for HVAC, plumbing, process systems, building automation, and energy management in commercial, industrial, biopharmaceutical, semiconductor, data center, educational, and food processing facilities. The company operates more than 1,000 employees across three California regional offices and has been serving Silicon Valley clients since 1967.
Product overview
Therma offers mechanical construction and maintenance services as a unified offering rather than a software product or modular platform. Their services include HVAC installation and maintenance, plumbing maintenance, test/adjust/balance services, building automation systems and controls, energy services, design/engineering/estimating, capital projects, and custom fabrication. The company also provides process systems and controls specifically for semiconductor, pharmaceutical, and data center facilities. These services are delivered through their workforce of over 1,000 employees across three regional offices in California (Silicon Valley, East Bay, and Southern California).
Differentiator
Problem solved
Functional benefit
Products and services
- HVAC Maintenance Ongoing HVAC preventive maintenance, reactive repairs, and system optimization services for existing client facilities, delivered through Therma's Service Division since 1981.
- Plumbing Maintenance Plumbing maintenance services including hydro excavation capability (unique among mechanical contractors) for exposing underground utilities, supporting commercial and industrial facilities.
- Test, Adjust & Balance (TAB) Test, adjust, and balance services for HVAC and mechanical systems to ensure systems perform to design specifications.
- Building Automation System Service Service and maintenance of building automation systems controlling HVAC, lighting, and energy management for client facilities.
- Energy Services Energy-efficient mechanical solutions including solar, natural ventilation, displacement ventilation, radiant flooring, and building shading to diversify and optimize client facility energy use.
- Design, Engineering & Estimating Design-build mechanical engineering and estimating services using Building Information Modeling (BIM) since 1986 for accurate planning and execution of mechanical systems.
- Capital Projects Design-build mechanical construction projects for commercial, industrial, biopharmaceutical, semiconductor, data center, and educational facilities, including the $36M Stanford Graduate School of Business project.
- Fabrication Custom in-house fabrication of sheet metal, process piping, high-purity components, and specialized mechanical parts, including a state-of-the-art cleanroom fabrication facility with fusion machines for high-purity plastics and orbital welders.
- Process Systems & Controls Process systems and industrial process automation services for semiconductor and biopharmaceutical manufacturing facilities, including controls and electrical switchgear for cogen plants and ammonia chillers.
- Building Automation Systems Building automation systems for HVAC, lighting, and energy management installed in commercial and industrial facilities.
Quantifiable outcome
- Therma completed its largest project to date, a $36M new construction project for Stanford Graduate School of Business in 2011
Companies that use Therma
Customer profileNamed customers13 records
Segments9 records
Ideal customer profiles7 records
Therma technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Therma partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Legenceparent_companyTherma is a Legence Company. Legence is described as a trusted partner in mission-critical performance in buildings. Therma operates under the Legence corporate umbrella.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Therma competitors and assessment
Company assessmentMarket position
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Therma social profiles
Digital presenceTherma financial estimates
Financial estimateRevenue estimate
Valuation estimate
Therma leadership team
Management profileNumber of profiles
Profiles2 records
Therma funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Therma M&A and investment
M&A and investmentM&A6 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Therma
What does Therma do?
Therma is a full-service mechanical contractor that delivers design-build construction, custom fabrication, and ongoing maintenance for HVAC, plumbing, process systems, building automation, and energy management in commercial, industrial, biopharmaceutical, semiconductor, data center, educational, and food processing facilities. The company operates more than 1,000 employees across three California regional offices and has been serving Silicon Valley clients since 1967.
Is Therma a public or private company?
Therma is a private company. It is classified as corporate owned and is currently operating.
When was Therma founded?
Therma was founded in 1967. It employs 1,001 to 5,000 people.
Where is Therma based?
Therma is headquartered in San Jose, United States, in the North America region.
How does Therma make money?
Four revenue lines are on record. Mechanical Construction Projects are the primary driver. The others are maintenance Services, fabrication and process Systems and Controls.
Does Therma have an API?
No public API is recorded for Therma.
What industry is Therma in?
Therma's product category is Mechanical Contracting & HVAC Services. Its primary akta.pro industry code is IMAFALAB, HVAC & Refrigeration Contracting, with a secondary code of IMAFADAI, Pharmaceutical & Biotech Manufacturing Facility Construction. Its NAICS code is 3334 and its SIC code is 3580.