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About Us

Committed To Excellence

Our team of professionals has been using experience, expertise, and an excellent track record to handle everything from minor repairs to grass-roots plant additions.


Serving Since 1964

In 1964, the Bosnich family owned and operated the business. DePue Mechanical Inc. was formed in 2008 with a promise of getting things done on budget, on time, and safely.

Why Depue

Exceeding Expectations


We have proudly met the Gold Standard of Safety designed by the Mechanical Contractors of Chicago.

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DePue Mechanical prides itself on quality in all aspects of our business, including client and employee relationships.

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Depue Mechanical has proudly been serving the mechanical industry since 1964.

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"We develop a partnership with our clients to protect their interests, as well as the interests of our workers. We treat every worker like a member of our family. Keeping them safe is essential."

Jim Jacobsen, Jr..


DEPUE, Jim Jacobsen, Jr. Testimonial

Our Team

The People Behind The Promise

Owners Jim Jacobson Sr. and Jim Jacobson Jr., and field superintendent Chip Kahsen provide a safety and customer satisfaction-first approach to their business.

Meet our family


Our Extended Family

We maintain memberships and/or affiliations with the following organizations:

  • Mechanical Contractors Association of Chicago (MCA)
  • Chemical Industry Council of Illinois (CICI)
  • National Board
  • SEIU Local 1
  • Sheet Metal Workers Local 265
  • Mechanical Contractors Association of America (MCAA)
  • Three Rivers Mechanical Association (TRMA)
  • ASME
  • Pipefitter Local 597

Company News The Latest From DePue

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Awards & Certifications

DePue Mechanical Earns Meritorious Award and Gold Award from TRMA

Congratulations to DePue Mechanical for earning the Meritorious Award and the Gold Award.

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Company News

DePue President Elected President of MCA – Chicago

Jim Jacobsen Jr. elected President of the MCA - Chicago!

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Company News

DePue Set as Prime GC for New Henkel – Cannon Falls Project

DePue Mechanical has been hired as the Prime General Contractor for a chiller replacement.

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Company News

Depue Hired As Mechanical Contractor For Carus Expansion Project

Carus LLC announced in August 2022 a $20 million expansion for LaSalle manufacturing plant

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