
Some companies talk about their roots, but LONG Building Technologies grew them here in Colorado.
Willis Long launched his HVAC business in 1965 from the basement of his family home.
More than six decades later, LONG has grown into one of the largest building integrators in the Western U.S., with its corporate headquarters proudly planted in Littleton.
LONG is more than an HVAC company; itap a full-service building solutions powerhouse.
to security systems, mechanical service, and parts, the company has commercial buildings covered from top to bottom. It understands Colorado’s wild temperature swings and high-altitude quirks, and designs solutions around them.
on five pillars: Family, Trust, Relationships, Safety, and Innovation. Leaders promote work-life balance and encourage unplugging after work.
Coworkers can publicly recognize each other through the Coin Program, and the company’s scholarship program pays tuition directly, avoiding reimbursement delays.
No. 3
Years named: 12
Founded: 1965
Headquarters: Littleton
Employees: 626, with 338 in Colorado
Locations: 5 in Colorado
Facts: LONG Building utilizes building technology services to automate, enhance efficiency, make facilities greener, and ensure safety for commercial, institutional, and industrial facilities of all types and sizes.



