ACI Mechanical delivers complex HVAC, industrial piping, and mechanical construction projects with engineering oversight and field precision. As a Comfort Systems USA affiliate, we combine local execution with national resources—ensuring safety, schedule control, and long-term system performance.
ACI Mechanical is a commercial HVAC and industrial mechanical contractor delivering design-build construction, process piping, hydronic systems, building automation, and preventive maintenance across the Midwest and national markets. With more than 80 years of experience and nearly 6,000 completed projects, we combine engineering depth, field execution, and national resources to support complex commercial and industrial facilities.
Our team includes LEED-accredited professionals and certified safety-trained technicians, maintaining a strong safety record while delivering high-performance mechanical systems built for long-term reliability and operational efficiency.
“It is a milestone for ACI to be among the top 10 recognized contractors nationwide by ABC for maintaining high standards of quality, safety, inclusion, and diversity.”
Working every day
Adding Engineering value
Since August 1998, ACI Mechanical, Inc. has been a proud member of the Comfort Systems USA family, strengthening our national presence while revitalizing our local HVAC service offerings. Today, ACI Mechanical is a leading provider of commercial and industrial HVAC solutions, specializing in large-scale construction projects, HVAC service and repair, building automation systems, and small-scale construction projects. With decades of experience and a commitment to innovation, we deliver comprehensive mechanical contracting services tailored to meet the diverse needs of our clients across multiple industries.
