Mechanical Construction and Contracting Services

Grunau Company has consistently been named in both the “Top 50 Mechanical Contractors” list by Engineering News-Record (ENR) as well as the “Book of Giants Contractor’s Top 100” list by Contractor Magazine. Grunau’s reputation is strong and we continually live up to our customers’ expectations.

We offer design, installation, repairs, and preventive maintenance in southeastern Wisconsin for the following mechanical systems: