Miller Industries

We specialize in custom design, engineering, and manufacturing of air supply systems, modular mechanical and electrical systems, and custom steel fabrication.

Over the years we have been a primary supplier to the automotive, healthcare, industrial, institutional and semiconductor manufacturers nationwide. We take great pride in our family-operated business built on hard work and a passion for making quality products.

Four Divisions. One Standard of Excellence.

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AHU & Modular Systems

Industry Leading, Modular Mechanical and Electrical construction along with Custom HVAC systems.
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Manufacturer Representatives

Manufacturer’s representative firm based in Michigan that specializes in comprehensive HVAC solutions.
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Miller Fabricated Systems

Advanced Steel Fabrication and Integrated Manufacturing Solutions for Global Industries.
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Mi Service Group

Repairs, replacements, and improvements to manufactured and applied products.
About US

Welcome to Miller Industries

Miller Industries is a family-operated company headquartered in Fenton, Michigan, delivering advanced steel fabrication, custom modular systems, air supply solutions, and HVAC expertise through our family of specialized brands.

Modular unit loaded onto a semi truck at Miller Industries in Fenton, MI
000 +
Employees
0 .5m+
Sq. Ft. Manufacturing Space
0
locations across the U.S.
Services

High Performance Services

Recent Work

Explore Large-Scale Projects

0000
Successful Projects

From concept to completion, our work reflects precision engineering, efficient execution, and performance-driven results across every division.

Testimonials

What Clients Are Saying

It is our opinion that when Miller Industries / Flex Air make a commitment to a project they take that commitment very seriously. They have continually put the proper and dedicated team members in place to ensure this promise, and keep those team members in place until the project is complete. I would recommend that any project, requiring a strong and committed team, rely on Miller Industries / Flex Air as a trusted and valued project team member.
Joshua Sendu
Joshua Sendu
Director, Walbridge
The Miller team never wavered despite the rollercoaster of ups and downs with our project. Even with shortened durations and changing information and expectations from the customer, the quality of fabrication never faltered. We appreciate all the long hours Miller spent to make sure timing and deliveries were maintained. The conveyor engineering, design, and fabrication portion of this project was very stressful, and I appreciate all the support your team provided. In summary, we are thankful to have had Miller as our partner and look forward to many more projects in the future.
Owner
Owner
Commercial Contracting Corp.
Partners

Our Trusted Partners

Updates

News & Articles

Modern Data Center
  • By miller_duwql0
  • Oct 9, 2026

Sustainable Data Centers: Recent Cooling, Energy, and Water-Saving Developments

Artificial intelligence is changing how data centers are designed. New AI processors consume more power and produce more...

Technology
  • By miller_duwql0
  • Oct 6, 2026

Miller Industries Celebrates Manufacturing Day!

For the third consecutive year,...

Miller Industries
  • By miller_duwql0
  • Sep 14, 2026

Miller Industries Opens Doors to

FENTON, MI — Miller Industries is...

Miller Industries
Contact

Get in Touch

Have a project in mind? Connect with our team to get started.

Headquarters

11225 N Park Ave., Fenton, MI 48430

Phone Number

(810) 373-0322

Email Address

Interested in partnering with us? info@millc.com

Hours

Mon - Fri: 8:00 am - 4:00 pm

Get in Touch

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