Grunau Company is a mechanical systems and fire protection contractor performing design/build construction and 24-hour repair services for HVAC, plumbing, piping, electrical, refrigeration, underground utilities and fire protection. Grunau Metals, a division of Grunau Company, specializes in structural and specialty metals, such as railings, canopies, catwalks, heavy gauge steel wind tunnels, ductwork, etc. We are headquartered in Oak Creek, Wisconsin, and have additional locations which specialize in fire protection services in Indianapolis, IN; Pittsburgh, PA; Youngstown, OH; and Orlando & Ft Myers, FL.  Grunau has been the benchmark of excellence since 1920.