Development Team

Garen N. Ewbank, Fellow, B.S. Industrial Engineering & Management, Oklahoma State University

Ewbank Geo Testing, L.L.C.
115 Wooccreek Drive

Fairview, OK 73737

Garen graduated with a B.S. in Industrial Engineering and Management from Oklahoma State University. Garen is a Lifetime Member of the Association of Energy Engineers (AEE) and is a Fellow, CEM, CRM, CBEP, CSDP and CEA with the AEE; and a Member of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).

Garen is an accredited installer and a Trainer with the International Ground Source Heat Pump Association. Garen is licensed to drill water wells, monitoring wells and ground source boreholes. Garen has extensive HVAC/R, ground source drilling and installation, wireless systems and project management experience.

Ewbank Geo Testing, L.L.C. member:
Garen N. Ewbank (Fairview, OK) as a the managing member and owner

Independent and of Counsel to Ewbank Geo Testing are:


William (Bill) Holloway
Bill has been involved in research and development for the past 26 years at Oklahoma State University. Bill has developed instrumentation that is either unique in purpose or has special design requirements. He was involved in development of some of the original thermal conductivity test systems from the trailer to the 'suitcase' unit for Ewbank. Reliability is the key, and these test units have performed hundreds of successful tests.
This philosophy is carried through to his development of the thermal conductivity test unit, ensuring the units are right before they are sent to the customer.

Bill is from Stillwater, OK. This is home of the International Ground Source Heat Pump Association.



Richard Beier, Ph.D. 
Richard leads and teaches in the Mechanical Engineering Technologies department at Oklahoma State University and consults. Richard has extensive back ground in the properties of the earth and oil and gas developments.

Andrew S. Ewbank, J.D. Andrew is a cum laude graduate of the OCU School of Law. Andrew is experienced in ground source installations and in-situ thermal conductivity testing.

B. Duane Harman, P.E., MBA
Duane graduated in Mechanical Engineering (BSME) from Oklahoma State University and received a Masters in Business Administration (MBA) from Oklahoma City University.
Duane specializes in large facilities HVAC/R with emphasis on ground source systems. Duane is experienced in ground source installations and in-situ thermal conductivity testing. Duane has extensive building automation and wireless experience. Duane is a Certified GeoExchange Designer (CGD) by the Association of Energy Engineers.


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