Operational since 1969, Mainelli Mechanical Contractors provides heating, ventilation, air conditioning and piping services. It offers plumbing and medical gas systems to serve the healthcare industry. The company provides renovation, construction analysis, product design, piping installation and sheet metal fabrication services. Its Facility Services Group provides facility management, tenant finishing, engineering, schedule development, and commercial and technical services. Mainelli Mechanical Contractors serves various commercial, industrial and healthcare construction projects. It employs a work force of project managers, site supervisors and craftsmen. The company s clients include the Nebraska Medical Center, Energy Systems, Molex, Alegent Health, C&A Industries, Mutual of Omaha and First National Bank Tower. Mainelli Mechanical Contractors maintains a location in Omaha, Neb.