EMCOR Group is a Fortune 500 company, providing mechanical and electrical construction and facilities services worldwide. The company, through its subsidiaries, designs, integrates, installs, operates and maintains various electrical and mechanical systems, including heating, ventilation, air-conditioning, refrigeration, and clean room process ventilation. It also provides services for low voltage systems, such as fire alarm, security, communications, and process control. Founded in 1966, the firm offers site-based operations and maintenance, mobile maintenance and services, facilities management, remote monitoring, installation and support for building systems, and technical consulting and diagnostic service. Formerly known as JWP, EMCOR Group is headquartered in Norwalk, Conn., and serves commercial, industrial, utility, and institutional customers.