Grunau Company

Name: Grunau Company
Address: 1100 W Anderson Court, Oak Creek, WI, 53154, US
Telephone: +18003651920
Price range: $$

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Oak Creek, WI
Grunau Company

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Grunau offers Mechanical systems design, install, service, inspections, & preventive mtc in SE Wisc.

Systems include HVAC (heat/ventilation/air conditioning), plumbing, medical gas, process piping, electrical, refrigeration, & underground site utilities.

11/05/2026

Introducing Inside Grunau Capabilities: HVAC

An HVAC system is more than heating and cooling. It is a carefully coordinated part of a building’s overall mechanical infrastructure—supporting indoor comfort, air quality, energy performance, and the day-to-day needs of the people and operations inside.

At Grunau, our HVAC capabilities span the full project lifecycle. Our team works with customers and project partners to engineer, fabricate, and install systems designed around the specific needs of each facility. From ventilation and humidity control to process heating and cooling, custom sheet metal, and complex mechanical-system coordination, our focus is on delivering dependable solutions built to perform.

Behind every successful system is a team of skilled professionals bringing together planning, craftsmanship, technical knowledge, and field ex*****on. Whether the project is a new build, renovation, or system upgrade, Grunau helps bring the mechanical vision to life.

This is the first feature in our Inside Grunau Capabilities series. Each month, we’ll spotlight another area of expertise and the people who make the work possible.

10/30/2026

Grunau salutes our hometown Milwaukee Brewers as World Series Champions! One of our office people even flew to Florida to watch the Brewers in person. The excitement of winning the World Series was sweet! Grunau celebrated the final win with a sweet treat of a make-your-own ice cream sundae bar and of course, sporting Brewers gear. Thanks Milwaukee Brewers for a memorable, wonderful season of baseball!

10/28/2026

When it comes to work being needed at our Grunau facilities, we trust the quality and experience of our APi Group sister companies. The Jamar Company is repairing the roof on our Grunau fabrication shops to keep our workers and equipment safe and dry. Grunau Fire Protection (Davis-Ulmer Fire Protection) recently replaced our Oak Creek facility's security and alarm system with an upgraded internet-based system for ease of use and better security features. If you need similar work at your facility, reach out to our sister companies who each have representatives working from our Grunau Oak Creek office.

10/23/2026

New “Brew Crew” t-shirts are being distributed to all our Grunau team members as we root for our hometown baseball team in the World Series. The energy around here is exciting! Grunau backs the Brew Crew! Go Milwaukee Brewers!

10/20/2026

Grunau Company hosted their 31st annual Ladies Golf Outing at Luxe Golf Bays in Franklin, WI on a sunny October Friday. A fun day with Grunau and APi team members networking with business partners who we work with throughout the year. For 2026, two charities were chosen and we collected $3000+, through raffle tickets, which will be given to Ronald McDonald House Eastern WisconsinCMilwaukee. Attendees also generously donated a large number of essential items which were delivered to Sojourner Family Peace Center for families impacted by domestic violence. Two worthwhile charities that serve our local communities.

10/15/2026

Grunau is proud to be Building Great Leaders Who Build Great Communities. In celebration of our parent company APi Group’s 100th anniversary, the APi Group Foundation is awarding a $25,000 grant in honor of Grunau Company to support Ronald McDonald House Eastern Wisconsin (based in Wauwatosa, WI). Thank you to Ronald McDonald House for their impact in our communities in providing temporary housing and other critical support services for families of ill and injured children.

10/14/2026

This Careers in Construction Month, we’re celebrating the people whose skill, craftsmanship and teamwork help bring complex projects to life.

At Grunau, careers take many forms. From HVAC, plumbing, and process piping to electrical, refrigeration, sheet metal fabrication, and more, our teams turn ideas into high-performing mechanical systems for the places where people work, learn, and gather.

Whether someone is beginning through an internship, co-op or apprenticeship—or bringing years of experience to the team—Grunau offers opportunities to build skills, contribute meaningful work and grow alongside a team that values safety, respect, continuous improvement and collaboration.

Work at Grunau is more than a job. It is a chance to create, problem-solve, and make a lasting impact.

Interested in building what’s next? Explore careers with Grunau and our local trade unions.

10/07/2026

During Fire Prevention Week, October 4–10, we recognize the everyday actions, systems and professionals that help protect people, property and operations.

Our sister company, Grunau Fire Protection, brings specialized expertise to every stage of fire and life safety, from system design and installation to inspections, testing, fire alarms, sprinkler systems and 24/7 emergency service.

Their work helps commercial and industrial facilities stay prepared, code-compliant and protected when it matters most.

This Fire Prevention Week, we recognize the experts who help make protection possible every day.

09/30/2026

Grunau's installation of HVAC rooftop units often starts with helicopter lifts for setting new equipment and if an existing replacement, bringing down the old HVAC RTU equipment. Grunau's years of experience make this an efficient process with our vendor partner Midwest Helicopter Airways, Inc.

09/16/2026

September is National Su***de Prevention Month, and this week focuses on Construction Su***de Prevention. If you or someone you know is in crisis mode or struggling with mental health issues, help is available 24/7 by calling or texting the 988 Su***de and Crisis Lifeline. We also have a local connection with additional resources at the Wisconsin Construction Wellness Community (www.wisconsinwell.org). Start the conversation and remember that together, we can help save lives.

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Address

1100 W Anderson Court
Oak Creek, WI
53154

Telephone

+18003651920

Website

http://www.grunau.com/

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