Article · Wikipedia archive · Last revised Jun 21, 2026

Emcor

EMCOR Group, Inc., is an engineering, construction, and property management company headquartered in Norwalk, Connecticut.

Last revised
Jun 21, 2026
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≈ 4 min
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Wikipedia ↗
EMCOR Group, Inc.
TypePublic
IndustryEngineering, Construction, and Property management
FoundedDecember 1994 (1994-12)
HeadquartersNorwalk, Connecticut, U.S.,
Key people
Anthony J. Guzzi (CEO)
RevenueIncrease US$14.566 billion (2024)
Increase US$1.344 billion (2024)
Increase US$1.007 billion (2024)
Total assetsIncrease US$7.716 billion (2024)
Total equityIncrease US$2.938 billion (2024)
Number of employees
40,400 (2024)
Websiteemcorgroup.com
Footnotes
1

EMCOR Group, Inc., is an engineering, construction, and property management company headquartered in Norwalk, Connecticut.2

Major clients, mostly of an industrial and/or commercial nature, include data centers, oil refineries; semiconductor, biotech, life sciences, and pharmaceutical facilities; and several facilities used by legislative, executive, and judicial branch entities of the United States Government both at federal buildings and laboratories around the country as well as agency headquarters in the Washington, DC area.13 It provides mechanical and electrical construction, engineering, industrial infrastructure, energy infrastructure, facilities management, and building services to private sector and public sector clients in the United States.2

It has over 100 operating subsidiaries and approximately 180 locations. The company is ranked 300th on the Fortune 500.4 In 2025, the company was ranked 2nd by Engineering News-Record on its list of the top 600 specialty contractors by revenue.5

Mission and Services

The company's electrical and mechanical construction services division, representing 67% of revenues in 2024, provides construction and operation services for infrastructure such as power stations, including those that provide sustainable energy such as photovoltaic systems; food processing; road lighting and traffic control systems, and other heavy construction projects. Large projects in this division relate to data centers, data and fiber projects, and cabling, as well as semiconductor, biotech, life sciences, and pharmaceutical facilities.1

The company's building services division, which represented 24% of revenues in 2024, maintains mechanical systems such as HVAC, plumbing, fire safety, automation, energy, and air quality. Notable government agencies that the company provides services for through its EMCOR Government Services subsidiary include the executive branch the National Archives and Records Administration, the Federal Deposit Insurance Corporation, National Aeronautics and Space Administration (NASA -- through the NASA Jet Propulsion Laboratory), as well as the departments of Transportation, Education, Health and Human Services, Energy, Defense, and Homeland Security; the legislative branch agency known as the Government Accountability Office (GAO); and the John Joseph Moakley United States Courthouse for the judicial branch .163

The company's industrial services segment, which represented 9% of revenues in 2024, handles maintenance of oil refineries and other petrochemical processing plants and is also involved in projects using sustainable energy and carbon capture and storage.1

History

In 1994, Jamaica Water Properties filed for bankruptcy after making acquisitions unrelated to its core business and incurring significant debt. Frank MacInnis became CEO of the company, sold many of the businesses and renamed the remaining company as Emcor. The company also added facilities management services to provide a steady revenue stream.

As of 2001, since the restructuring was completed in December 1994, the company had realized 27 consecutive quarters of year-over-year revenue growth.7

McInnis retired as CEO in January 20118 and as chairman in 2015.9

In December 2025, the company sold its operations in the United Kingdom to OCS Group for £190 million.10

Acquisitions

# Year Company Price Description of Assets Ref(s).
1 February 2002 19 companies from Comfort Systems USA $186 million 11
2 February 2003 Consolidated Engineering Services $178 million Parent of Cincinnati-based Viox Services 12
3 December 2005 Fluidics Mechanical services company based in Philadelphia, Pennsylvania 13
4 January 2006 Comunale Fire protection and mechanical services company headquartered in Akron, Ohio 14
5 August 2007 Ohmstede $455 million Heat exchanger services provider 15
6 February 2010 Scalise Industries Engineering, facilities maintenance, and service company headquartered in Lawrence, Pennsylvania 16
7 February 2011 Bahnson Holdings Mechanical construction services company headquartered in Winston-Salem, North Carolina 17
8 January 2012 Southern Industrial Constructors Industrial services contractor 18
9 July 2013 RepconStrickland $455 million U.S. industrial and refinery service provider 19
10 April 2016 Ardent Services and Rabalais Constructors $205 million U.S. industrial and refinery electrical and instrumentation service provider 20
11 April 2016 Newcomb and Company HVAC commercial and industrial mechanical contractor 21
12 March 2017 CCI Mechanical Mechanical service and design-build contractor for the commercial, industrial, and data center markets headquartered in Salt Lake City 22
13 August 2021 Quebe Holdings Electrical services company 23
14 February 2025 Miller Electric $865 million Electrical contractor operating in the Southeastern U.S. 24
References

References

  1. "Form 10-K". U.S. Securities and Exchange Commission. February 26, 2025.
  2. "Divisions". EMCOR Group, Inc. Retrieved 2026-01-12.
  3. "Clients". EMCOR Government Services. Retrieved 2026-01-12.
  4. "Fortune 500". Fortune.
  5. "ENR 2024 Top 600 Specialty Contractors". Engineering News-Record.
  6. "Home". EMCOR Government Services. Retrieved 2026-01-12.
  7. "Frank MacInnes OF EMCOR Group: In tragedy, opportunity". Institutional investor. October 31, 2001.
  8. "EMCOR Chief to Retire". Engineering News-Record. May 26, 2010.
  9. "Frank T. MacInnis Retires from EMCOR Group, Inc. Board of Directors; Steven B. Schwarzwaelder Elected to the Board of Directors" (Press release). Business Wire. October 30, 2015.
  10. "EMCOR Group, Inc. completes sale of EMCOR UK to OCS Group UK Limited". BIC Magazine. December 1, 2025.
  11. "COMPANY NEWS; COMFORT SYSTEMS SELLS 19 Units to Emcor". The New York Times. Bloomberg News. February 13, 2002.
  12. "EMCOR buys parent of Viox". American City Business Journals. February 5, 2003.
  13. "EMCOR Group buys Fluidics". Contractor. December 1, 2005.
  14. "EMCOR buys Comunale". Contractor. November 1, 2006.
  15. Madway, Gabriel (August 22, 2007). "Emcor shares rally on deal to acquire Ohmstede". MarketWatch.
  16. Juliano, Michael C. (February 25, 2010). "Emcor buys Scalise Industries". Stamford Advocate.
  17. Craver, Richard (February 2, 2011). "Bahnson Holdings to be acquired by Emcor Group". Winston-Salem Journal.
  18. "EMCOR Group acquires Southern Industrial Constructors". Contractor. January 27, 2012.
  19. "EMCOR Group, Inc. Completes Acquisition of RepconStrickland" (Press release). Business Wire. July 29, 2013.
  20. "EMCOR Group, Inc. Completes Acquisition of Ardent Services and Rabalais Constructors" (Press release). Business Wire. April 15, 2016.
  21. "Emcor Group acquires Newcomb and Co. in Raleigh, NC". Contractor. April 5, 2016.
  22. "EMCOR Group Acquires Salt Lake City's CCI Mechanical". Engineering News-Record. March 22, 2017.
  23. "EMCOR Group, Inc. Acquires Quebe Holdings, Inc" (Press release). Business Wire. August 5, 2021.
  24. "EMCOR Group, Inc. Completes Acquisition of Miller Electric Company" (Press release). Business Wire. February 3, 2025.


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