Illingworth-Kilgust, a wholly owned subsidiary of EMCOR Group, Inc., is a single-source provider of high-quality mechanical services.

About Us

After nearly 80 years, Illingworth-Kilgust has become one of the leading HVAC companies in the Midwest. Take a moment to learn about us.

Safety and Quality

At Illingworth-Kilgust, safety is our first concern. Our safety program has been recognized for numerous prestigious awards. Read about our safety and quality program.
Meet The Team

David Bultman, Vice-President, is just one of the many people that deliver high performance projects that meet our clients most exacting standards.

Meet the rest of the team.