• slide
  • slide
  • slide
  • slide
  • slide

We've Expanded Our Footprint to Provide
Building Automation Solutions to the Green Bay Area!  

About Us

With over 85 years of HVAC and mechanical services experience, Illingworth-Kilgust Mechanical provides clients statewide with the total mechanical solutions they need to meet their facilities' full lifecycle requirements. Learn about us.


COVID-19 Response

shutterstock_1662672304_225.jpg

Read how Illingworth-Kilgust is addressing the COVID-19 outbreak and our actions to help mitigate its impact and reduce the spread of the virus.  Learn more.

Meet the Team

Schmitz.jpg John Schmitz, 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.