DEEM provides a range of mechanical, refrigeration, plumbing and electrical services. The company specializes in the installation of various refrigeration products, such as grocery store rack systems, ice builders and glycol systems. Additionally, it offers installation services for various heating, ventilation and air conditioning products, including split and exhaust systems and reciprocating chillers. The company offers electrical services that include installation and repair of transfer switches, generators, and data and phone cabling. DEEM is approved by the American Society of Mechanical Engineers to work on fabrication and assembly of pressure-piping equipment. It is located in Indianapolis and is an ISO 9001:2000-certified company.