EMCOR Group, Inc. provides electrical and mechanical construction, and facilities services in the United States. The company designs, integrates, installs, starts-up, operates, and maintains electric power transmission and distribution systems; premises electrical and lighting systems; process instrumentation in the refining, chemical process, food process, and mining industries; low-voltage, voice and data communications, fire protection, water and wastewater treatment, and controls and filtration systems; roadway and transit lighting and fiber-optic lines; heating, ventilation, air conditioning, refrigeration, and clean-room process ventilation systems; plumbing, processing, and piping systems; central plant heating and cooling systems; cranes and rigging; millwrighting; and steel fabrication, erection, and welding. It also offers building services to facilities, such as commercial and government site-based operations and maintenance; reception, security, and catering; outage services to utilities and industrial plants; military base operations support; mobile mechanical maintenance and services; floor care and janitorial; landscaping, lot sweeping, and snow removal; facilities and vendor management; call center; installation and support for building systems; technical consulting and diagnostics; small modification and retrofit; infrastructure and building projects; and program development, management, and maintenance services for energy systems. In addition, the company provides industrial services for refineries and petrochemical plants, such as on-site repair, maintenance, and service of heat exchangers, towers, vessels, and piping; design, manufacture, repair, and hydro blast cleaning of shell and tube heat exchangers and related equipment; refinery turnaround planning and engineering, specialty welding, and specialty technical services; and overhaul and maintenance of process units. The company was founded in 1966 and is headquartered in Norwalk, Connecticut.