Industries We Serve
Explore the industries that trust Hartwig Mechanical to keep their facilities running smoothly every day and every season.
Our Core Industries
Hartwig Mechanical works with a wide range of facilities with one consistent standard: servicing mechanical systems with reliability, precision, and performance in mind.
Manufacturing
Keep production moving with ventilation, process piping, and mechanical solutions that help your systems perform under pressure.
Multi-Family Properties
Keep your tenants comfortable year-round with HVAC and plumbing systems designed for tenant satisfaction and minimal disruption.
Healthcare and Medical Facilities
Support your sterile environments with Hartwig Mechanical’s clean, code-compliant installations that prioritize patient safety and regulatory timing.
Education
Preserve classroom focus with low-impact mechanical services timed for academic schedules and long-term performance.
Public Facilities
Serve your community with mechanical systems built to operate safely, reliably, and in full compliance with public standards.
Retail and Hospitality
Protect your customer experience with behind-the-scenes mechanical service that keeps comfort and uptime on track.
Cold Storage and Processing Plant
Safeguard your inventory and regulate food quality with temperature-controlled mechanical systems that meet GMP and CIP standards.
Serving Demanding Industries Across Northern Illinois and Southern Wisconsin
Hartwig Mechanical brings over 65 years of mechanical experience to the sectors that keep our region running. Our clients choose us because we show up, solve problems, and stand by our work. With offices in Rockford and Harvard, IL, we’re positioned to provide commercial HVAC, plumbing, and design-build services across Northern Illinois and Southern Wisconsin. Our project managers, VDC team, and seasoned field crews work in sync, backed by 24/7 service and a no-excuses approach.
Our Standards Match the Environments We Serve
Hartwig Mechanical works in high-risk and high-regulation environments every day, and we do it without disrupting the people who rely on us. Every crew member on your jobsite meets the required certifications and training for safety, industry compliance, and clean work practices. We maintain a drug-free workplace and uphold strict scheduling to avoid delays. Whether we’re working behind the walls of a hospital or under the roof of a manufacturing floor, we deliver mechanical construction the right way—quietly, coordinated, and by the book. When we’re on site, you’ll know the work’s getting done right.