Hansen Mechanical is a wholly owned subsidiary of EMCOR Group, which is one of the world's leading providers of mechanical construction and facilities services in the United States. Hansen Mechanical is one of the largest design and build mechanical contractors in Nevada. The company specializes in fabricating and installing mechanical and plumbing systems. The company deals in health care, commercial, institutional and municipal projects. It offers a range of services, such as plumbing, sheet metal and value engineering. The firm is located in Las Vegas.