Business Details
50+ Years
experience
Emergency
services
Trusted Mechanical & Fire Suppression Contractors in Highland Park, MI
Established in 1909, John E Green (JEG) is a family-owned leader in mechanical contracting and fire suppression systems. With over a century of experience, we deliver plumbing, HVAC, process piping, and fire suppression solutions across the Eastern United States. Our core valuesSafety, Quality, Integrity, and Serviceguide every project, supported by a 1,000+ team of skilled professionals. Recognized by Engineering News Record as one of the largest specialty contractors, we combine innovation with 116 years of expertise to serve industries like Automotive/EV, Healthcare, and Education.Our ISO 19001 and 14001 certifications, along with a zero-tolerance injury policy, underscore our commitment to excellence. As a fifth-generation-owned business, we prioritize client satisfaction through comprehensive service offerings, 24/7 emergency support, and tailored solutions for diverse sectors. Our awards, including ENRs Top 600 Specialty Contractors, reflect our dedication to quality and integration. Partnering with JEG means choosing a trusted contractor focused on safety, innovation, and long-term success.
Services
Piping
Plumbing
Fire Suppression
HVAC
Fabrication
Design Build
24/7 Emergency Service
Details
- Year established: 1909
Highlights and features
- We have 116 years of experience in mechanical contracting and fire suppression systems.
- Our 24/7 emergency service ensures rapid response for critical system needs.
- Certified under ISO 19001 and ISO 14001 quality and environmental management standards.
- We serve diverse industries including Automotive/EV, Healthcare, and Education.
- Recognized as a Top 600 Specialty Contractor by Engineering News Record.
Associations and certifications
- ISO 19001
- ISO 14001
- EPA Lead-Safe Certified
Services
Fire Suppression
We design and install advanced fire suppression systems for commercial, industrial, and municipal projects. Our NICET-certified designers ensure compliance with safety codes, using cutting-edge technology to protect facilities and occupants. With 116 years of expertise, we deliver tailored solutions for healthcare, automotive, and laboratory environments.
HVAC
Our HVAC services include system design, installation, and maintenance for residential and commercial buildings. We integrate energy-efficient technologies and LEED-certified practices to optimize comfort and sustainability. Our engineers provide lifecycle cost analysis to reduce long-term operational expenses.
Plumbing
We offer full-scale plumbing solutions, from municipal water treatment plants to industrial process piping. Our ASME-certified welders ensure precision in installations, while our 24/7 emergency team addresses urgent leaks or system failures across Michigan and the Eastern U.S.
Design Build
Our design-build approach combines engineering, fabrication, and construction under one roof. This streamlined method reduces costs and timelines while maintaining quality. We collaborate directly with owners and contractors on billion-dollar projects in healthcare and automotive sectors.
24/7 Emergency Service
We provide round-the-clock emergency support for critical mechanical and fire suppression system failures. Our rapid-response teams are equipped to handle urgent repairs in industrial plants, hospitals, and commercial facilities, minimizing downtime and ensuring safety compliance.
People
Michael J. Green
President & CEO
Leading John E Green since its fifth generation, Michael J. Green drives innovation in mechanical contracting. With decades of industry experience, he prioritizes safety, quality, and client partnerships, expanding the firms national footprint in fire suppression and HVAC systems.
Questions
What services does John E. Green Company offer?
We specialize in mechanical contracting, fire suppression systems, plumbing, HVAC, process piping, design-build projects, and 24/7 emergency services for industries like Automotive/EV, Healthcare, and Education.
Does John E. Green Company provide emergency services?
Yes, we offer 24/7 emergency support for urgent mechanical and fire suppression system repairs, ensuring rapid response to minimize downtime and safety risks.
What industries does John E. Green Company serve?
We work in Automotive/EV, Healthcare, Education, Municipal, Industrial, and Resort/Entertainment sectors, tailoring solutions to meet each industry’s unique mechanical and fire safety requirements.
Is John E. Green Company certified for quality standards?
Yes, we hold ISO 19001 (quality management) and ISO 14001 (environmental management) certifications, along with EPA Lead-Safe and ASME stamp certifications for specialized projects.
Reviews (1)
Don S.
Sep 21, 2009
Report
If you need a power house, a few thousand feet of pipe welded, maybe a new waste water treatment plant or a are building a hospital call John E Green Co for a quote on all your piping needs! If it's like this "O" we do it! John E. Green started his plumbing business in 1909 and on September first the company was 100 yrs old. Today it is still owned and operated by the Green family now in it's 4th generation of service. Green has been a Highland Park based business for most of those 100 yrs, for a brief period of time during WWII it was in Royal Oak but they quickly returned
