Get to Know Hartwig Mechanical
Learn all about how Hartwig Mechanical builds and supports critical mechanical systems with unmatched service and industry experience.
Behind the Material Handling Experts
For over 65 years, Hartwig Mechanical has helped businesses across Northern Illinois and Southern Wisconsin get more from their mechanical systems. As a full-scale contractor, we bring proven experience in new construction, design-build, renovations, and system upgrades. From commercial buildings to industrial infrastructure, we manage complex mechanical projects while focusing on performance, reliability, and lasting value. Our work is built to last, and our process is designed to meet the needs of the people who count on it every day.
Mission Statement: To consistently provide the best mechanical solutions, offering customers and future customers unmatched commitment and service, while providing our associates with an enhanced quality of life and fundamental personal growth.
65+
Years of Service
Full-Service Mechanical Construction Without the Runaround
Hartwig Mechanical is known for our fast, responsive service, but we’re equipped for much more than emergency calls. Our construction division delivers full-scope mechanical systems that support long-term performance, energy efficiency, and code compliance. Whether you’re building a facility from the ground up or reworking aging infrastructure, we offer the planning, precision, and manpower to get the job done right. From plumbing to HVAC and more, every system we install is backed by hands-on project management and a team of skilled field technicians who take pride in their craft. And when problems arise, our 24/7 service response ensures you’re never left waiting when uptime matters most.
Learn More About Hartwig Mechanical
Get to know the people, partnerships, and values that power Hartwig Mechanical.
Leadership Team
Meet the experienced professionals guiding our growth and setting the tone for excellence every day.
Partners
Explore the industry relationships and affiliations that help us deliver best-in-class mechanical solutions.
Careers
Join a team that values skill, safety, and hard work—and invests in the people behind the process.
Testimonials
See what our clients have to say about working with Hartwig Mechanical across a range of projects and industries.