Greiner Brothers, Inc. offers its customers the best in mechanical contracting and maintenance of heating, cooling, and refrigeration systems and equipment. For over 50 years the Greiner name has been associated with the plumbing, heating, air conditioning and refrigeration industry. In 1967, Greiner Brothers was incorporated in Indianapolis as a commercial and industrial mechanical contracting corporation. We specialize in the mechanical construction of schools, hospitals, universities, penal institutions, food processing plants, and industrial facilities