Industrial Mechanical Services
Serving Northern IL and Southern WI, Hartwig Mechanical offers full-scope industrial mechanical services for piping, welding, ventilation, and equipment installations.
Over 65 years of experience
Full-Scope Industrial Mechanical Services for Demanding Environments
From precision piping to specialized equipment installs, our team is equipped to support your operation no matter the scale.
Industrial HVAC Service and Maintenance
We service high-demand HVAC systems for production, storage, and processing spaces with performance and uptime in mind.
Equipment Installation
Our team installs heavy-duty systems, process boilers, heat exchangers, compressors, and more with zero guesswork and full coordination.
Piping and Welding
From food-grade to medical gas, we fabricate and install code-compliant systems, including exotic metals and custom welding.
Our Partners
Specialized Mechanical Support With Real-World Experience
Hartwig Mechanical doesn’t stop at general installs or routine checkups. Our industrial mechanical services support facilities that operate under pressure, whether that means strict compliance, 24/7 uptime, or exacting environmental control. We bring over six decades of field experience in industrial ventilation, slurry piping, air systems, and process lines. As established industrial mechanical contractors, we partner with your team to design, install, and maintain systems that are clean, efficient, and built to perform.
24/7 service response
Two dedicated offices
Skilled field crews
VDC team support
Commitment to jobsite safety
Industries We Serve
Manufacturing
From process piping to equipment installs, we help manufacturers maintain production flow, air quality, and system efficiency.
Multi-Family Properties
We support large housing developments with industrial piping and HVAC systems for shared infrastructure and mechanical rooms.
Healthcare and Medical Facilities
We install and maintain medical gas lines, sterilization support systems, and controlled ventilation for sensitive environments.
Education
Our services support labs, mechanical infrastructure, and large-scale HVAC needs for K-12 schools and higher education campuses.
Public Facilities
From correctional centers to municipal buildings, we deliver mechanical solutions that meet regulatory codes and perform reliably.
Retail and Hospitality
Our industrial-scale ventilation, heating, and back-of-house mechanical systems are designed for comfort, compliance, and uptime.
Cold Storage and Processing Plants
We design and service mechanical systems that maintain strict temperature and environmental controls to protect inventory and output.
Explore Our Past Projects
Our Success Stories
Excellent service and technically up to any job. This is a professional group capable of very large projects with attention to the small details as well. Give them an opportunity ….. you won’t be disappointed.
Friendly and courteous mechanics, prompt service.
Areas We Serve
Hartwig Mechanical proudly serves Northern Illinois and Southern Wisconsin with offices in Harvard and Rockford, Illinois. Our industrial teams cover a wide region, responding quickly and delivering full-scope mechanical services wherever they’re needed.