Safety Services
A coworker assembles a unit on the job site.

Established: 1920|Acquired: 2006

Grunau’s team designs, installs and services a variety of mechanical systems including HVAC, plumbing, piping, temperature controls, electrical, refrigeration, underground utilities and fire protection throughout southeastern Wisconsin. Headquartered in Milwaukee, Grunau also offers full fire protection services from its offices in Indianapolis, Indiana; Pittsburgh, Pennsylvania; Youngstown, Ohio; and Orlando, Florida. Our Grunau Metals division 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.

Get in touch


1100 W Anderson Court
Oak Creek, WI 53154
Toll-Free: 800-365-1920
Phone: 414-216-6900