


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.”






Adding Engineering value
Since 1998, ACI Mechanical, Inc. has been a proud member of the Comfort Systems USA family, strengthening our national resources while maintaining the responsiveness of a trusted mechanical contractor serving Iowa and the Midwest.
Today, ACI Mechanical provides commercial and industrial mechanical solutions, including HVAC construction, industrial and commercial process piping, building automation systems (BAS), and HVAC service and maintenance. Our team supports projects ranging from complex industrial facilities to institutional and commercial buildings.
Through preconstruction services, design-assist collaboration, and value engineering, we work closely with owners, engineers, and contractors to deliver efficient, reliable mechanical systems that improve performance, optimize energy use, and reduce lifecycle costs.