EMCOR Group Inc. announced the completion of its acquisition of Siemens' U.S. Facility Management Services business as part of an alliance between the two companies to provide service for building controls, fire protection and security systems, as well as mobile and on-site building operations, maintenance services, and facilities management services.

Financial details were not disclosed, but annual revenues from the Siemens' business are approximately $53 million and the company employs 365 employees.