Grunau Company, Inc.

1100 W Anderson Court
Oak Creek, WI 53154
Toll-Free: 800.365.1920
Phone: 414.216.6900
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Established: 1920
Acquired: 2006

Grunau’s team of skilled professionals design, install and service a variety of mechanical systems including HVAC, plumbing, piping, temperature controls, electrical, refrigeration, underground utilities and fire protection throughout southeastern Wisconsin. Headquartered in Milwaukee, Wisconsin, Grunau also offers full fire protection services from its offices in Indianapolis, Indiana; Pittsburgh, Pennsylvania; Youngstown, Ohio; and Orlando, Florida. Our division, Grunau Metals, enhances Grunau with structural and specialty metal fabrication services for projects throughout the U.S.

Our long history of success is based on quality products and services and the ability to build and maintain long-term relationships with customers. Grunau acts as a customer advocate, pinpointing the best solutions and identifying the best value options regardless of the size and complexity or simplicity of a job.


Industries Served

Service Regions in United States

Operating Divisions

Flannery Fire Protection