EMCOR Group is a Fortune 500 specialty contractor headquartered in Norwalk, Connecticut, operating through roughly 100 subsidiary companies across the United States and the United Kingdom. Formed in 1994 out of the reorganization of JWP Inc., the company builds and services the electrical and mechanical systems inside commercial, industrial and institutional buildings: power distribution, HVAC, plumbing, fire protection, process piping and low-voltage systems, plus ongoing facilities maintenance. EMCOR reported record second-quarter 2026 revenues of $5.15 billion and a backlog of $17.14 billion, with the strongest growth in network and communications, water and wastewater, institutional and healthcare work. The company acquired four electrical contractors in mid-2026 for roughly $700 million combined, following its $876.8 million purchase of Miller Electric in 2025.
EMCOR Group is headquartered at 301 Merritt Seven in Norwalk, Connecticut, and organizes its operating companies into three service divisions: EMCOR Construction Services, EMCOR Building Services and EMCOR Industrial Services. Together those divisions cover roughly 420 U.S. locations and employ approximately 44,000 people, generating $16.99 billion in revenue in 2025.
The company’s subsidiaries hold membership in a range of construction, mechanical, electrical and facilities trade associations, including Associated Builders and Contractors, the Associated General Contractors of America, the Design-Build Institute of America, the Mechanical Contractors Association of America, the National Electrical Contractors Association, the Sheet Metal and Air Conditioning Contractors’ National Association, the American Society of Heating, Refrigerating and Air-Conditioning Engineers, and the U.S. Green Building Council.
Those affiliations reflect the range of specialties folded under the EMCOR umbrella, from HVAC and sheet metal work to green building practices and design-build delivery, and give client-facing operating companies access to industry standards, training and advocacy resources maintained by each group.
Clients and prospective employees can reach EMCOR’s corporate office through a toll-free line separate from the Norwalk headquarters number, or by submitting an information request through the company’s website. Its careers section highlights trade apprenticeship opportunities alongside corporate roles, pointing to a workforce that spans both office staff and licensed trades across its subsidiary network.
EMCOR also publishes an annual sustainability report and runs a Communities for a Cause program, channeling company and employee giving toward causes in the areas where its operating companies work.