303.975.2100

About LONG

LONG on history…

LONG Building Technologies was established in 1965 as a manufacturer representative of HVAC equipment and has evolved throughout the years, adding offerings and expertise to keep pace with changing technology.

LONG on innovation…

Today our services are extensive and comprehensive covering the gamut of building needs including HVAC equipment, energy efficient upgrades, controls, security systems and mechanical installation, maintenance and repair. Everything you need to improve the quality, efficiency, functionality and longevity of your building throughout its lifecycle is right here at LONG.

LONG on integrity…

We also believe in the value of our services so much that when we moved into our headquarters building in late 2009, we initiated a complete overhaul, utilizing elements from all our areas of expertise and transforming it into an intuitive, energy efficient facility. The building is complete with a full service warehouse and parts counter for our customers, a rooftop solar farm, security system and access control and occupancy sensing for a safe and comfortable work environment that is pending LEED Gold Certified. We’re proud to utilize the same technologies we recommend to our clients in our own building.

LONG on proficiency…

Service delivery goes hand-in-hand with our offerings, which is why LONG employs a diverse team of engineers, technicians, salespeople and support that are experts in their field with the ability to take on any challenge. We like to stick with the norm:  Consistent service and projects that are completed correctly the first time along with continuous training that keeps skills honed to the latest in the industry.

LONG on customer focus…

One thing that hasn’t changed in our 40 plus years in business is our belief in service simplicity. While our building systems may be sophisticated and innovative, the fundamentals rule when it comes to developing and fostering relationships with our clients. We provide quality products and reliable professionals that are easy to work with every time you choose LONG.

Quick Contact



Do you need a quote now?



Our Clients Speak Out:

“I just wanted to drop you a line regarding the work and efforts of your control division regarding the Mitchell High School project this summer in Colorado Springs. As you may or may not know this was an extremely difficult project with an almost impossible schedule of 3 months. I would like to thank Bob Cleaver, Dave Gardiner, Mark Vils along with Greg Custer and your field technician Phil in addition to your field crew for a very fine job under extremely difficult conditions...

Gregory B. Even, Cobb Mechanical Contractors

In this day and age of our fast paced society it is hard allocating time for anything. Customer service is about as rare as polar bears in Florida. On that note I would like to make you aware that it has been a pleasure working with your staff on our continuing upgrade and maintenance of our DDC system here at the (Denver) Zoo. We have an extensive animal collection, whose health and well-being rely on certain climates special to their needs, so we have to be sure to take all necessary...

Gene Roybal, HVAC Master, Denver Zoo

“I call on LONG because of their responsiveness. I know that they will answer my phone call or email and get back to me with an equipment selection or product information quickly. When it comes to equipment selection they are the first call I make.”

Erik Johnson, PE, Engineering System Solutions, ES²

“Travis, I wanted to THANK YOU for saving me this morning. It was way above and beyond of you to come out early on a Sunday morning in the freezing cold and get the heat running. I know that was not technically part of your job description at all, but your willingness to help get our system running correctly through thick and thin speaks volumes to your character and work ethic. Everyone left the class happy, and the heat worked great for the 11 and 4:00pm. Thank you again.

Marcy Donovan, Tula Hot Yoga Denver