United Mechanical Contractors
United Mechanical Contractors is a union-affiliated HVAC and mechanical contractor based in Simi Valley, California, providing design, installation, and maintenance services to public-sector, educational, healthcare, and infrastructure clients across Southern California. It operates as both prime and subcontractor via California B and C-20 licenses.
- Company typePrivate
- Founded1989
- HeadquartersSimi Valley, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What United Mechanical Contractors does
United Mechanical Contractors (UMC) is a privately held, union-affiliated general and mechanical contractor based in Simi Valley, California, specializing in HVAC design, installation, retrofit, and maintenance for commercial, institutional, and industrial facilities. The company holds California Contractor's License #759496 with both a B (General) classification, enabling it to act as prime contractor, and a C-20 (HVAC) classification, enabling it to act as a subcontractor on larger projects. Its service scope spans design-build engineering, water treatment plants, airports, hospitals, schools, clean rooms, laboratories, government buildings, HAZMAT abatement, and BIM-enabled project delivery. UMC serves public-sector and institutional clients across Los Angeles County, Ventura County, Santa Barbara, Riverside, and Orange County, with named engagements including the Los Angeles Community College District, Simi Valley Unified School District, LAX, LADWP, the Port of Los Angeles, the Port of Long Beach, JPL, UCLA Santa Monica Hospital, and Baxter Laboratories, as well as subcontractor work for major general contractors such as Kiewit, Walsh/Archer Western, Obayashi, Lyles, Shimmick, Griffith, GSE, and Cushman.
UMC generates revenue through project-based competitive bidding on public works and institutional contracts, awarded either directly as a prime contractor or indirectly as a subcontractor to general contractors. Pricing is determined per-project via the bidding process; the company publicly discloses only its bond rate structure, which scales from 1.44% on the first $500,000 down to .576% on amounts above $7.5 million. Its small business enterprise (SBE and SBE micro) certifications (DGS #1048929) provide preferential bidding status on California public contracts, while its affiliations with SMART Local Union 105, SMART Local Union 104, and Painters and Allied Trades Local Union 36 secure access to skilled union labor and support its .84 EMR safety record. Operations remain regional, with no disclosed expansion beyond Southern California, and revenue figures are not publicly reported.
The company is small (11–50 employees) and has been in operation since approximately 1989, with over 35 years of accumulated Sheet Metal Workers Union experience cited as a workforce backbone. The operating model is essentially a unionized specialty trade contractor reliant on project bid flow, repeat client relationships, and a tier-1 GC partnership network rather than recurring contracted revenue, making performance sensitive to the cadence of Southern California public works and infrastructure capital spending.
United Mechanical Contractors firmographics
Firmographics- Name
- United Mechanical Contractors
- Legal name
- United Mechanical Contractors
- Website
- https://umcontractors.com
- Company type
- Private
- Founded year
- 1989
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- United Mechanical Contractors is a union-affiliated HVAC and mechanical contractor based in Simi Valley, California, providing design, installation, and maintenance services to public-sector, educational, healthcare, and infrastructure clients across Southern California. It operates as both prime and subcontractor via California B and C-20 licenses.
- Ownership category
- akta.pro rank
United Mechanical Contractors industry classification
Industry- Product category
- Mechanical Contracting Services
- NAICS
- Plumbing, Heating, and Air-Conditioning Contractors (238220)
- SIC
- Construction - Special Trade Contractors (1700)
- akta.pro primary industry
- HVAC & Refrigeration Contracting (IMAFALAB)
- akta.pro secondary industry
- Plumbing & Pipefitting Contracting (IMAFALAC)
Keywords
Where United Mechanical Contractors is headquartered
LocationHeadquarters
- HQ city
- Simi Valley
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
United Mechanical Contractors business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain
Revenue model
- HVAC and Mechanical Contracting Services: The company generates revenue through project-based contracting as both a prime contractor (holding B license for general contracting) and as a subcontractor (holding C-20 HVAC license). Projects are awarded through competitive bidding on public works contracts with government entities, educational institutions, healthcare facilities, and commercial clients. Revenue is earned through one-time project fees rather than recurring contracts.
- Subcontracting Services: As a subcontractor working under general contractors, UMC provides specialized HVAC and mechanical services on larger construction projects, generating revenue through subcontract agreements.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Public Works Projects - Bond Rate Structure |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
United Mechanical Contractors product offering
Product offeringCore offering
United Mechanical Contractors is a union-affiliated mechanical contractor based in Southern California that specializes in HVAC and mechanical services for commercial and institutional projects. The company delivers heating, ventilation, air conditioning, plumbing, and related mechanical systems installation and service work.
Product overview
United Mechanical Contractors is a union-affiliated general contractor specializing in HVAC and mechanical systems for Southern California. The company offers a unified portfolio of services centered on HVAC installation, maintenance, and design-build for diverse sectors including education, healthcare, water treatment, airports, and commercial facilities. Their offering includes core HVAC contracting services complemented by specialized capabilities in BIM, clean room construction, and HAZMAT abatement. The company also provides internal digital tools (Image Converter and Field Calculators) to support project operations and estimation.
Differentiator
Problem solved
Functional benefit
Products and services
- HVAC Services Installation, service, and support of heating, ventilation, and air conditioning systems for commercial and institutional facilities in Southern California, delivered by union-affiliated mechanical tradespeople.
- Mechanical Contracting Services General mechanical contracting work, including plumbing and piping systems, for commercial and institutional clients in Southern California, performed by a union workforce.
Quantifiable outcome
- .84 EMR safety rating achieved through weekly safety meetings and Job Hazard Analyses
Companies that use United Mechanical Contractors
Customer profileNamed customers10 records
Segments4 records
Ideal customer profiles1 record
United Mechanical Contractors technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
United Mechanical Contractors partnerships and signals
Strategic signalPartnerships
Eleven partnerships are on record, tiered core and minor.
- KiewitcoreMajor general contractor partnership for large infrastructure projects including Metrolink maintenance and LA Reservoir projects. UMC serves as subcontractor providing HVAC services on Kiewit-led projects.
- Walsh/Archer WesterncoreJoint venture partnership on major water treatment plant projects. UMC provides mechanical/HVAC services on Walsh-led construction projects including F.E. Weymouth WTP and Robert B. Diemer Water Treatment Plant.
- ObayashicorePartnership with Obayashi Corporation on large construction projects including Silverlake Reservoir Complex Storage Replacement Project and Robert B. Diemer Water Treatment Plant (joint venture with Shimmick).
- LylescorePartnership with Lyles on construction projects including Silverlake Reservoir Complex Storage Replacement Project (joint venture with Webcor/Obayashi).
- Shimmick ConstructioncoreSubcontractor relationship on projects including Fullerton Road Grade Separation and Robert B. Diemer Water Treatment Plant (joint venture with Obayashi).
- Cushman Contracting CominorSubcontractor partnership on Ventura WRF Digester Improvements project.
- GSE Construction CominorSubcontractor partnership on Oxnard WWTP Emergency Repairs project.
- Griffith CompanyminorPartnership on Universal Pedestrian Bridge project and other construction work.
- SMART Local Union 105 (Los Angeles)coreUnion affiliation with Sheet Metal Workers SMART Local 105 in Los Angeles, providing skilled workforce for HVAC and sheet metal work in the Southern California region.
- SMART Local Union 104 (Ventura County)coreUnion affiliation with Sheet Metal Workers SMART Local 104 in Ventura County, providing skilled workforce for the Ventura County service area.
- Painters and Allied Trades Local Union 36minorUnion affiliation with Painters and Allied Trades Local Union 36 Los Angeles, providing painting and finishing trades workforce for construction projects.
Scale indicators4 records
Recent moves6 records
Expansion highlights4 records
United Mechanical Contractors competitors and assessment
Company assessmentBroad incumbents
- APi Group: Public safety, specialty services, and mechanical contracting conglomerate with substantial HVAC and building services exposure in California. Competes for institutional and government mechanical work at the prime and sub levels.
- EMCOR Group: Largest publicly traded mechanical and electrical services contractor in the U.S. with significant SoCal operations. Competes for many of the same hospital, airport, and institutional HVAC scopes and typically underbids smaller firms on price.
- Comfort Systems USA: National mechanical services platform with multiple California subsidiaries executing commercial HVAC and plumbing work. A broad incumbent competing on larger institutional and infrastructure scopes across the same end markets.
Direct peers
- Bel Air Mechanical: Mid-sized mechanical contractor serving Southern California with HVAC, plumbing, and process piping for healthcare, education, and commercial clients. Direct head-to-head competitor for school district and GC-led subcontract scopes in the LA/Ventura region.
- Murray Company: Mechanical contractor in Southern California specializing in HVAC, plumbing, and process piping for commercial, industrial, and institutional clients. Closely comparable mid-sized union mechanical contractor competing for similar school district and healthcare scopes.
- Southland Industries: Design-build MEP firm with strong Southern California presence serving healthcare, education, and water infrastructure. Comparable in pursuing design-build mechanical scopes on airports, hospitals, and treatment plants alongside national GCs.
- ACCO Engineered Systems: Large union-affiliated mechanical contractor based in Southern California providing HVAC, plumbing, and building automation for commercial, healthcare, and institutional projects. Highly comparable as a direct competitor pursuing the same public-sector and GC-led scopes in the LA basin.
Regional players
- TDIndustries: Employee-owned mechanical contractor headquartered in Texas with similar union partnership culture and commercial/institutional focus. Comparable business model and culture, though operating in a different geography.
- John W. Danforth Company: Multi-state mechanical contractor serving healthcare, education, and commercial markets in the Northeast and Midwest. Similar project mix and union/non-union hybrid model, but geographically distinct.
- Harris Group: Pacific Northwest-based mechanical contractor serving industrial, healthcare, and institutional markets. Comparable in scale and project mix, with overlap on healthcare and specialized mechanical scopes.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
United Mechanical Contractors social profiles
Digital presenceUnited Mechanical Contractors compliance and trust
Trust signalCompliance2 records
United Mechanical Contractors financial estimates
Financial estimateRevenue estimate
Valuation estimate
United Mechanical Contractors leadership team
Management profileNumber of profiles
United Mechanical Contractors funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
United Mechanical Contractors 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 United Mechanical Contractors
What does United Mechanical Contractors do?
United Mechanical Contractors is a union-affiliated mechanical contractor based in Southern California that specializes in HVAC and mechanical services for commercial and institutional projects. The company delivers heating, ventilation, air conditioning, plumbing, and related mechanical systems installation and service work.
Is United Mechanical Contractors a public or private company?
United Mechanical Contractors is a private company. It is classified as unknown and is currently operating.
When was United Mechanical Contractors founded?
United Mechanical Contractors was founded in 1989. It employs 11 to 50 people.
Where is United Mechanical Contractors based?
United Mechanical Contractors is headquartered in Simi Valley, United States, in the North America region.
How does United Mechanical Contractors make money?
Two revenue lines are on record. HVAC and Mechanical Contracting Services are the primary driver. The others are subcontracting Services.
Who are United Mechanical Contractors's main competitors?
Broad incumbents on record are APi Group, EMCOR Group and Comfort Systems USA. Direct peers are Bel Air Mechanical, Murray Company, Southland Industries and ACCO Engineered Systems. Regional players are TDIndustries, John W. Danforth Company and Harris Group.
Does United Mechanical Contractors have an API?
No public API is recorded for United Mechanical Contractors.
What industry is United Mechanical Contractors in?
United Mechanical Contractors'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 1700.