Tenant Finish · Commercial · HVAC

Who We Are

Ducts Unlimited Mechanical Systems provides the Colorado Front Range with the best in commercial HVAC installation and service. Our management team has over 100 years of combined experience in the HVAC industry. This experience, coupled with the latest in technology and tools, makes Ducts Unlimited unbeatable in delivering customer satisfaction.

In business since April, 2000—that was founded on the premise that you deserve a quality job that is done right the first time. This philosophy has led to success in the commercial HVAC market in the Denver metropolitan area. We currently have over 70 employees, a service fleet of 55 vehicles, projects ranging from $500 to $2,000,000, and projected sales in excess of $20 million dollars this year.

Ducts Unlimited Mechnical Systems Inc. Headquarters

For after hours emergency service - call 303-423-0373

5156 W. 58th Ave.

Arvada, CO 80002


FAX 303-430-1686

What We Do

Our projects are located from Castle Rock to Longmont, but the majority of work is in downtown Denver and the Denver Tech Center. Projects have included multiple restaurants, computer rooms, strip mall build outs, tenant finishes, core and shell in small buildings.

  • Spiral Duct Work (Office)

  • Relocated Domestic Water Lines

  • Dakin VRV Systems

  • Exposed Spiral Duct Work

  • Stulz AC Units

  • Spiral Duct Installation

  • Stulz Air-Cooled Condensers

  • Plumbing Installation & Service

  • Computer Room Installation & Service

Ducts Unlimited is very familiar with the International Mechanical code and both the President and Vice President hold a Masters from the International Code Council.

We carry all the necessary insurance to work in all buildings, including a substantial umbrella policy (detailed insurance information available upon request); with our umbrella we are covered to drive at D.I.A.

Our large service department is able to maintain any equipment, whether installed by us or not.

Contact us today to see how we can meet the needs of your next project.

2015 CSA Plaque 2015 CSA Pinnacol Plaque