We are committed to ensuring compliance with industry regulations and safety standards to provide a secure working environment for our workers and customers. With our expertise, we help clients meet and exceed these requirements.
Fully Licensed, Bonded & Insured:
Keeps your project protected and in complianceUnion-Trained, OSHA-Certified Crews:
Fewer jobsite delays, more accountabilitySpecialty Mechanical Expertise:
HVAC, piping, sheet metal, welding, rigging—done in-houseDedicated PMs & Clear Communication:
Know who’s on the job and what’s happening, alwaysProven Safety Record:
Low EMR, ISNetworld member, documented safety plansPrefabrication & In-House Shop:
Speeds up delivery and keeps schedules tightFlexible Scheduling & Shift Work:
We match your jobsite schedule, not the other way around
A: We specialize in commercial and industrial mechanical projects—especially where HVAC, piping, and custom fabrication intersect. We’re comfortable handling everything from new builds to plant retrofits.
A: Yes. We are signatory to Pipefitters Local 597 and Sheet Metal Workers Local 265.
A: Yes. We routinely staff weekend and night crews and can scale manpower to meet your schedule.
We’ve partnered with some of Illinois’ most respected general contractors on projects ranging from food manufacturing expansions to multi-million dollar plant upgrades.
DePue Mechanical helped build the first fully automated caramel popcorn plant in the U.S., providing stainless steel piping, equipment setting, and utility tie-ins for a turnkey food manufacturing upgrade.
Learn moreCertifications
DePue has earned an "R" stamp from the National Board of Boiler and Pressure Vessel Inspectors proving that our capabilities go far beyond what most client-partners expect.
