Hartwig mechanical
Delivering Reliable, Efficient Mechanical Solutions
Hartwig Mechanical is part of Crete United, a national energy efficiency company that uses our Mechanical, Electrical, and Plumbing (MEP) expertise to improve communities. As part of the Crete United network, we are your single-source mechanical contractor in Northern Illinois, offering comprehensive services in plumbing, process piping, HVAC, refrigeration, and controls. Over the last 66 years, Hartwig Mechanical has staked its reputation on delivering outstanding products and services with the utmost integrity. From on-site maintenance and mechanical equipment upgrades to regular inspections of mechanical systems and 24/7 emergency service, the company measures its success in customer satisfaction.
Our Services
Tailored Solutions.
Top-Notch Performance.
Plumbing Services
Refrigeration
HVAC/Mechanical
Energy Efficiency
what we’ve heard
Customer Testimonial
Futureproofing
the Buildings of
Tomorrow
“In a post-pandemic world, we realized an immediate need for improved indoor air quality across our facilities. We worked with Hartwig Mechanical to upgrade 14 schools across our district. At every step, they were efficient, friendly, and easy to work with. We’re confident our new system will benefit students, teachers and staff for years to come.”