Offering one of the most comprehensive lines of premium HVAC and boiler room equipment in the region. Whether commercial, institutional or industrial, McCotter Energy Systems has the technical expertise and equipment to provide a solution to any challenging boiler room application. McCotter Energy Systems is committed to providing the most efficient systems and comprehensive information in order to find the optimal heating solution. We provide equipment and service throughout Wisconsin and the Upper Peninsula of Michigan from three locations; our main office in Metro Milwaukee and 2 satellite offices in Norway, Michigan and De Pere, Wisconsin. Our service technicians are centrally located to provide quick service throughout Wisconsin and the U.P.