Grunau Company: Oak Creek’s Trusted HVAC, Plumbing & Fire Protection Contractor

For over a century, Grunau Company in Oak Creek, WI, has been the name local businesses and industries rely on for mechanical systems. They handle the heating, cooling, plumbing, and fire protection that keep buildings safe and comfortable. Their team is ready for both planned projects and urgent repairs.

Business Overview

Grunau Company is a full-service mechanical contractor based in Oak Creek, Wisconsin. They focus on commercial and industrial projects across southeastern Wisconsin. Their skilled employees design, install, and service complex systems for offices, factories, schools, and more. While they specialize in larger-scale work, their expertise ensures any building runs smoothly.

Key Services

Grunau Company offers a wide range of essential services. They group their work into several key areas to meet common needs.

• Heating & Air Conditioning (HVAC): They install new systems, replace old units, and repair everything from furnaces to complex commercial air handlers. For local businesses, a reliable HVAC system is crucial with Wisconsin’s cold winters and humid summers.
• Plumbing & Gas Lines: Services include plumbing installation, repair, and inspection for large buildings. They also handle gas line installation and repair, important for many industrial and commercial kitchens.
• Fire Protection Services: Since 1929, they’ve designed and installed systems that protect property and lives. This includes sprinklers and other fire suppression equipment, a critical need for any commercial space.

Areas Served

Grunau Company serves a wide area around Milwaukee. They work in cities like Racine, West Allis, Mequon, Watertown, Cudahy, Grafton, Sussex, and many more. Their long history means they understand the local building styles, from older factories in Milwaukee to newer commercial developments in Oak Creek. They know what systems work best in our region’s climate and for our local industries.

Company History

The story began in 1920 when Paul J. Grunau started a plumbing and repair business. By 1923, they expanded into HVAC and piping. In 1929, fire protection services were added. For four generations, the Grunau family ran the company. In 2006, Grunau Company joined the APi Group, a family of specialty contractors. This move helped them continue growing while keeping their local expertise.

Leadership

Founded by Paul J. Grunau, the company has always been rooted in the community. Although now part of a larger group, the leadership maintains a strong local presence from their Oak Creek, WI headquarters. Their team is involved in the commercial construction industry throughout the region, understanding the specific needs of Wisconsin businesses.

Specialties & Highlights

Several things make Grunau Company stand out.

• They use Building Information Modeling (BIM) technology. This helps plan projects better and avoids problems before construction starts.
• They are a true full-service contractor, handling HVAC, plumbing, electrical, refrigeration, and underground utilities all under one roof.
• Their focus on commercial and industrial projects means they have deep experience with complex systems that smaller homes don’t require.
• With over 100 years in business, their reputation for solid work is well-established.

Why Locals Choose Grunau Company

Businesses and property managers in Oak Creek, WI, and beyond choose Grunau Company for a few simple reasons. They have been here for generations, so they know the area. They offer reliable service and quality workmanship on large mechanical systems. Their long-standing presence means they’ve seen and solved almost every problem a building can have. When you need a contractor who can handle big jobs for your commercial or industrial property, Grunau Company in Oak Creek, Wisconsin, is a trusted partner.