LEED = Leadership in Energy and Environmental Design

Grunau Company was the first mechanical contractor in Wisconsin to employ LEED Accredited Professionals (APĀ®) who are certified in the U.S. Green Building Council's principles and techniques. To better understand our customer's green building requirements & provide them with a knowledgeable resource, Grunau Company went through the process of certifying its own headquarters and achieved LEED Gold status.

Going green is no longer a trend but has become a common-sense way to live. Grunau worked on many sustainable building projects that are environmentally responsible, profitable, and a healthy place to live and work. Indoor air quality, resource-efficient electrical & plumbing fixtures, solar, wind energy & geothermal systems are just a few of our specialties.

Contact us to learn how to improve the quality of life in your building.

Sustainable/LEED Projects

For more information on LEED, visit