About Us

Geothermal: Our Story

About Us

Colorado Geothermal Drilling has designed and installed over 500 geothermal projects throughout the Front Range. We are capable of performing a heat load calculation to determine loop field sizing as well as an economic analysis to show the geothermal system's payback over the life of the system. We strive to master leading edge technology and pride ourselves on the quality of services we commit to our clients.

Geothermal drilling in compact space

Colorado Geothermal Drilling has successfully completed numerous projects throughout the Front Range, both residential and commercial, new construction and retrofits of existing structures. Our set-up is unique as we are able to access compact areas with our equipment, setting us apart from other drilling operations. With our vast knowledge of geothermal design and installation we can provide customers with valuable information, answering any questions, and providing the best energy efficient system to fit the clients' needs. The combination of this equipment and our personnel allow us to successfully and repeatedly complete numerous drilling projects along the Front Range.

Meet The Team

Dan Rau has a Bachelor's Degree in Mechanical Engineering and is a licensed Professional Engineer (PE). Because of Dan's engineering background, he has a comprehensive understanding of geothermal systems and can help our clients to design the system most appropriate for their heating and cooling needs. Dan grew up on a farm in the Midwest and has a passion for enhancing and building more efficient, safe, and streamlined equipment. This in turn makes our installations require less equipment and manpower. His engineering background and equipment design and operation make him a rare occurrence in the geothermal industry.

Kari Rau executes the marketing and advertising strategy for Colorado Geothermal Drilling and collaborates in all aspects of managing a green, family-owned, small business. She is on the Steering Committee for the Brighton Business Builders, is a member of IGSHPA and The Greater Brighton Chamber of Commerce,  and often writes about geothermal and renewable energy content for media publications. She worked as an ATC in sports medicine before joining Dan and championing their renewable business.


Nick Rau is our Geothermal Field Chief and leads our onsite geothermal loop field installation.  He manages all drilling and grouting operations, and assists our team with optimizing our quality and efficiency  installation standards. He is originally from the Midwest and grew up on a dairy farm. He has a degree in Landscape Design and spent several years as a foreman overseeing and completing landscaping projects.


Colorado Geothermal Drilling is a member of the International Ground Source Heat Pump Association (IGSHPA) and we are IGSHPA Accredited Installers.

CGD provides geothermal drilling services in the state of Colorado all along the Front Range (Denver, Boulder, Colorado Springs & Fort Collins).

For more information on geothermal installation services please contact Dan Rau or Kari Rau. Call us at 303.903.7081 or fill out our online request form.

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