Contractor Spotlight — Grunau Company goes lean and saves customers some “green”
In 1920, Paul J. Grunau established Grunau Company, Inc. located in Milwaukee, Wisc. Originally a plumbing contractor, by 1923 Grunau had also added HVAC services to the company’s capabilities. Soon after, Grunau brought its mechanical expertise to the area of fire protection and sheet metal services. After 40 successful years in Milwaukee, Grunau Company expanded…

