About Us

Design Mechanical has been proudly serving Colorado and the western United States for over three decades.

In all of our locations, safety takes top priority. We focus company-wide on incident prevention, not just OSHA compliance. We take pride in holding active roles on safety-conscious teams and projects throughout the Rocky Mountain region. Put simply, safety is not negotiable—it’s a core value that is always in the hearts and minds of our workers and management.

Our History

  • 1984 - Company Founded

    Emerges as one of Colorado’s leading commercial HVAC contractors.

  • 1997 - Acquired by Comfort Systems USA

    Design Mechanical merged with Comfort Systems USA, one of the nation’s largest commercial mechanical contractors. Comfort Systems currently consists of approximately 40 companies nationwide, with revenues exceeding $1.5 billion. In addition to the financial backing of a large public corporation, the merger afforded Design Mechanical the ability to tap into the expertise and experience of a wide network of companies and therefore to further improve and expand the services we offer.

  • 2001 - Helm Corporation Merged into DMI

    Merged with Helm Corporation and became a full mechanical contractor adding capability to design, fabricate, and install commercial plumbing and piping systems.


Our Story

Design Mechanical started in a garage in 1984, fabricating sheet metal by hand. Since then, we’ve grown and expanded our workforce, expertise, and capabilities across the region.

To date, we’ve designed and installed systems for over 100 million square feet of corporate office buildings, high-rise and multi-unit residential buildings, churches, schools, hospitals, server rooms and research laboratories. Located in sunny Louisville, Colorado, we employ over 400 individuals and remain a highly sought-after partner for contractors.


Original Design Mechanical Logo

Design Mechanical Inc. has a significant advantage over our local competitors.

We share best practices, ideas and technology to give our customers better project quality, performance and safety. DMI is proud to be a Comfort Systems “center of excellence” and to guarantee success on your project, no matter how large or small.


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