e3ms combines the best of environmental, economic and
engineering considerations to develop commercial HVAC
solutions that achieve your objectives.

About e3ms

At the intersection of art and engineering you’ll find e3ms.  We understand that the best HVAC solutions only come from innovative thinking and environmentally sustainable designs.  Our designs are customized entirely for your project.

After all, you deserve a solution not only focused on what you need, but why.  We help educate clients on why specific design solutions might be counter-intuitive but ultimately provide a superior result.  e3ms has thrived by putting client’s interests first rather than selling pre-packaged solutions.

Our mission at e3ms is to skillfully combine excellence in engineering with creative problem solving.  Through this leading-edge workflow process, you’ll receive a cost effective and environmentally sustainable HVAC installation you can be proud of.

Bob Padgett

“Gone are the days of a pre-fabricated solutions meant to fit the needs of the masses. These remedies often come with a host of compromises and concessions you’ll only live to regret.”

Bob PadgettPresident - e3ms

We believe the outcome our clients desire can be achieved by creating a solution that’s designed specifically for their requirements rather than a one-size-fits-all package that includes compromises.

Team e3ms

These are incredible people enlisted to bring you the pinnacle of excellence in engineering.


Bob Padgett

Bob Padgett


In 2003, after 16 years as a Sales Engineer in the Commercial HVAC market, Bob started Engineered Mechanical Systems to address the market need for sustainable HVAC systems and to build a customer focused business that would be a responsible citizen to our community and the employees within his firm. The company quickly became the leading representative, in our market, for innovative and highly efficient HVAC solutions.

Bill Kennedy

Bill Kennedy

Sales Engineer/Manager

Bill has been in the HVAC industry for over 30 years, previously working as a sales engineer/manager with Carrier Corp., and has been with e3ms since its inception in 2003. He holds a B.S. in Mechanical Engineering (Cornell University) and an MBA (California Polytechnic University in Pomona). He served as a pilot in the U.S. Air Force prior to entering the HVAC industry.

Project Management & Operations

David Dewhurst

David Dewhurst

Sales Engineer

Dave is a native of Denver, Colorado with 22 years experience as a Sales Representative in the HVAC industry. Prior to e3ms, he worked alongside Bob at Long Building Technologies; and then came on board for the company launch in 2003. He is a graduate of the University of Colorado at Denver with a B.S. in Mechanical Engineering. Dave also currently holds an “Engineering in Training Certificate.”

Maddi Duran

Maddi Duran


Maddi Duran joined e3ms in October 2013 as the company Controller. As a transplant from Illinois to Colorado, Maddi received her MBA in 2005.
When Maddi isn’t keeping the company in order she spends time with her husband & kids. She also has quite a green thumb from spending so much time in her garden.

Manufacturers We Represent

We work with some of the finest manufacturers in the world to develop specific solutions for our clients.


What Our Clients Say

“We had a six month review of the RTU job at Pikes Peak Community College today.  The customer is very happy with Alliance RTU’s!”

Dennis SchroederService Director Heating & Plumbing Engineers, Inc.

“Just wanted to let you know Dave & Bob came up big for us on Denver Union Station. We had two actuators on smoke dampers burn out yesterday evening at 4:30. Our smoke evac test is with DFD at 3PM today. We received the replacements at 7:30 this morning and the guys are installing and wiring them as we speak. It would have been a bad deal if we were not ready for DFD after months of preparation and their attention to this order is greatly appreciated.”

Ed VanDeventerProject Manager, RK Mechanical, Inc.

“CONGRATULATIONS!!  HUGE WIN!!  Way to go!  Peter and the team at E3MS … Thank you for your continuing efforts!  Now that the dam has been broken, let’s go 2014!!”

Jonathan GolleyManager, Inside Sales, Flex Hose Co.