Free, Renewable Energy From the Earth

Almost all buildings need heating and / or cooling to keep occupants comfortable. Office buildings, schools, homes, condos, churches, manufacturing plants, retail spaces... all need to be conditioned. Many need domestic hot water, refrigeration, process cooling, etc. Using the ground under and around the buildings allows you to reduce the amount of energy you need to purchase... reducing energy cost and impact on the environment.

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Weber State University Thermal Highway, Ogden, Utah

Central system that is using the chilled water distribution system for about 75% of the year. This project will phase out the chillers and boilers and be 100% convective circulation circuit by 2025.

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About Us

Unparalleled ground source system experience

The members of the GreyEdge Group have all been committed to the ground source heat pump industry for many years. A combined total of over 250 years of experience in almost all facets of the industry around the world from projects ranging from single family homes to large district geothermal systems, give us unparalleled expertise in one of the most energy efficient heating and cooling technologies available.

The GreyEdge Team

Paul Bony
Bill O'Donnell PE
Garen Ewbank B.S. I.E.&M, OSU, AEE Fellow
Don Penn PE, CGD, CGI, AEE Fellow
Garry Sexton
Cary Smith CEM, CEA, CGD, CGI

Image Engineering Group, Ltd.

Projects

Successful projects around the world

GreyEdge members have been involved in geothermal heat pump projects around the world...North America, Asia, Australia and Europe. Projects ranging from single family homes, schools, recreation facilities, retail, offices, religious facilities...through to district geothermal energy utilities that move waste energy through a project rather than waste it.

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Contact

Main Office

Cary Smith
The GreyEdge Group, LLC
3962 E. Alpine Valley Circle
Sandy, UT 84094
Phone: 801-942-6100
Fax: 801-942-6127

Utah

Paul Bony
The GreyEdge Group, LLC
3962 E. Alpine Valley Circle
Sandy, UT 84094
Phone: 801-942-6100
Fax: 801-942-6127

Oklahoma

Garen Ewbank
The GreyEdge Group, LLC
115 Woodcreek Drive
Fairview, OK 73737
Phone: 580-227-2358

Idaho

William (Bill) O’Donnell
The GreyEdge Group, LLC
545 W. 19th
Idaho Falls, Idaho 83402
Phone: 208-523-8068

Texas

Don Penn
The GreyEdge Group, LLC
1301 Solana Boulevard
Building 1, Suite 1420
Westlake, Texas 76262
Phone: 817-410-2528

Arkansas

Gary Sexton
The GreyEdge Group, LLC
1870 Optimus River Road
Calico Rock, AR 72519
Phone: 870-297-8604