Grunau Company: Professional HVAC Services Serving Oak Creek, WI 53154.0
1100 W Anderson Ct, Oak Creek, WI 53154.0
Company Profile
Grunau Company has been a trusted name in Oak Creek, Wisconsin, and the greater region since our founding by Paul J. Grunau in 1920. Starting with plumbing and repair, we grew to include HVAC, process piping, and fire protection services, becoming a full-service mechanical systems contractor for commercial and industrial projects. Now part of the APi Group family, our team continues to leverage over a century of local experience and modern technologies like BIM to deliver reliable design, installation, and service for HVAC, plumbing, electrical, and more, building on a legacy of customer-focused solutions and solid values right here in our community.
Key Services
- HVAC system repair
- Plumbing installation or replacement
- Plumbing inspection
- Plumbing repair
- Gas line repair
- Fire protection services
Frequently Asked Questions
Can Grunau Company handle residential plumbing and HVAC needs in Oak Creek?
Yes, we can. While Grunau Company has a strong history in large commercial and industrial projects, our expertise in plumbing installation, repair, and HVAC services is comprehensive. For Oak Creek homeowners dealing with common issues like uneven heating or needing a plumbing inspection, our skilled technicians apply the same high standards of workmanship and problem-solving we've used for over a century on projects of all sizes.
What should I do if I suspect a crack in my furnace's heat exchanger?
If you suspect a heat exchanger crack, it's important to address it promptly for safety, as it can lead to carbon monoxide entering your home's air. For Oak Creek residents, Grunau Company's HVAC repair specialists are trained to diagnose this issue. We can perform a thorough inspection of your system to assess the heat exchanger and other components, recommending the necessary repair or replacement to restore safe and efficient operation.
Does Grunau Company offer fire protection services for local businesses?
Absolutely. We have provided fire protection services since 1929, making it a core part of our mechanical contracting services. For businesses in Oak Creek and Southeastern Wisconsin, our team designs, installs, and maintains fire protection systems. We integrate this critical safety work with our other specialties like plumbing and HVAC, ensuring coordinated and reliable systems for commercial and industrial facilities.
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |





