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Higher Education Fort Collins, CO

Colorado State University Moby Complex Geo-X System


Colorado State University


Adolfson & Peterson Construction


261,623 sq ft

U.S. Engineering Construction, LLC (USEC) is working with CSU on the campus’ first Geo-X system, which serves the heating and cooling needs of the Moby Arena Complex and new Meridian Village housing and dining development – projects crucial to CSU’s commitment to achieve carbon neutrality by 2050. The Geo-X installation will be the largest ground-source heating and cooling system in Colorado and one of the largest in the western United States.

As the design-build mechanical contractor, USEC contracted the entire design team – mechanical engineer, electrical engineer, structural engineer, geothermal engineer, and architect – an approach that helps CSU save money by forgoing a general contractor’s fee and allowing USEC to work directly with the design team.

Geo-X will be an on-site renewable energy system that taps into ground source heat to generate electricity and heat buildings without using fossil fuels. The system will replace the Moby Complex’s reliance on the main campus’ steam distribution plant.

For the Moby Complex project, USEC installed the Geo-X system in tandem with five six-pipe heat pumps and two new central plants that include the heat pumps, geothermal pumps, heating, and chilled water (CHW) distribution pumps. Select heating and chilled distribution piping and some heating water and CHW coils will be reused or replaced; other piping will be added, as needed.

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