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With over 115 years of experience, John E. Green Company has been working with customers across a diverse range of industries. We pride ourselves on being an innovative leader across all industries, delivering project success to all our customers. JEG has been able to successfully expand by staying true to our core values of Safety – Quality – Integrity – Service since 1909.

Leader Across All Industries

At John E. Green Company, we stand as a national leader in the fabrication and installation of plumbing, HVAC, process piping, and fire suppression systems. With a rich history of successful projects spanning across the Eastern half of the United States, we have established ourselves as a trusted partner in numerous industries and markets.

Challenges surface in every project, but at John E. Green Company, we tackle them head-on. Through the application of LEAN principles and innovation, we guarantee the delivery of efficient solutions without fail. Our dedicated team is committed to exceeding your teams’ expectations, consistently going above and beyond to ensure project success.

John E. Green Company specializes in the following markets:

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    Education

    University

    K-12

    STEM

     

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    Laboratory

    Research and Development

    Pharmaceutical

    Data Centers

     

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    Resort/Entertainment

    Casinos

    Hotels

    Performing Arts Centers

    Convention Centers

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    Industrial

    Data Processing Equipment

    Refineries

    Power Generation

    Central Utility Plants

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    Municipal

    Waste Water Treatment Plants

    Utility Main Distribution

    Water Treatment Plants

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    Healthcare

    Hospitals

    Medical Office Buildings

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    EV/Automotive

    Phosphate/E-Coat Systems

    Body Shop & General Assembly Tooling Systems

    Paint & Sealer Automation

    Engine Equipment Installations

    Transmission Equipment Installations

    Paint Circulation Systems

    Robotics

    Battery / Fuel Cell Plants

JEG: Your Partner in Success

When you choose John E. Green Company, you’re not just selecting a mechanical or fire suppression contractor; you’re choosing a partner committed to your success. We are driven by a passion for innovation, sustainability, and delivering solutions that stand the test of time. Contact us today to discover how John E. Green Company can meet your mechanical or fire suppression needs. Let’s build a brighter, more efficient future together.

Our dedication to championing quality and integration for our customers led us to be recognized as one of the Top 600 Specialty Contractors in 2023 by ENR/Engineering News-Record and the Private 200 in 2023 by Crain’s Detroit Business.

These awards highlight our achievements in specialty contracting as a prime or subcontractor and our status as one of Southeast Michigan’s largest privately held companies. We’re incredibly grateful for this recognition, which motivates us to continue delivering exceptional services to our valued customers.