Our Clients
The Go-to Contractor for Some of the World's Leading Companies
What attracts companies to Installation Services of Illinois? Our unmatched service delivery and commitment to safety. With 80 + years of combined millwright experience, ISI has provided the fastest, smartest, and safest equipment installation, modification, repair, maintenance, and reassembly for plant relocation to a diverse client base from FedEx, 3M, and KraftHeinz to Honeywell, Wrigley, and NAVISTAR. Our high client-retention rate reflects our unwavering devotion to providing innovative solutions that meet their unique needs.