IGSHPA Accredited Trainers

Cary Smith

Terry Proffer Cary Smith is a Certified GeoExchange Designer, Certified Energy Manager, and Certified Energy Auditor. Mr. Smith has been in the energy business for over 43 years. For the past 20 years he has been president of Sound Geothermal Corporation, Salt Lake City, UT. SGT is a design and solutions firm with projects in thirty-one states. Cary has been pioneer in development of hybrid GeoExchange systems and community hybrid systems throughout the West. He has been involved with the design of over 20 integrated district and multi-building ground coupled systems.

Mr. Smith is a Director and Treasurer for the International Ground Source Heat Pump Association (IGSHPA). Mr Smith is also the Board Shadow for the IGSHPA Standards Committee. He currently serves as Chairman of ASHRAE Technical Committee 6.8 "Geothermal Utilization and Applied Heat Recovery", Chair of ASHRAE Multidisciplinary Task Group, Avoided Source Energy Consumption (MTG-ASEC), and Chair of NGWA Government Affairs sub-committee on Geothermal Heat Pumps. He is a founding member of the Utah State Chapter of the Association of Energy Engineers. Cary is a certified AI, CGI, and CGD Trainer and has helped to develop or review both the CGI Course and CGD material.


Charles Remund

Terry Proffer Dr. Remund has over 20 years of experience installing and designing geothermal systems. He has been a certified instructor for IGHSPA since 1994. He was a professor in the Mechanical Engineering department at South Dakota State University from 1988-2009, where he taught thermodynamics, heat transfer, fluid dynamics, design of thermal systems and applied laboratory courses. He is a co-author of the IGSHPA geothermal installer training manual titled "Design and Installation of Residential and Light Commercial GSHP Systems". Dr. Remund has been principle investigator on many research projects associated with ground source heat pumps, specifically addressing heat transfer characteristics of grouting materials, soil and rock. He worked with regional electric utilities and the Geothermal Heat Pump Consortium through the Northern Geothermal Support Center at SDSU, through which hundreds have been trained in various aspects of ground source heat pump design and installation.


Chris Balbach, P.E., C.E.M., C.M.V.P., B.E.M.P., LEED-AP

Terry Proffer Chris Balbach brings to this seminar extensive expertise in building simulation and energy modeling, with a focus on existing buildings. As Vice President of Research and Development for Performance Systems Development of NY, LLC, he acts as a subject matter expert to guide the company's internal software development teams. As a subcontractor to the National Renewable Energy Lab (NREL), Mr. Balbach has delivered weeklong comprehensive Energy Assessment trainings (including sections on energy modeling) to governmental clients worldwide. He has a passionate belief that energy simulation tools, when properly wielded, often represent the best available technology for accurately estimating the potential for energy savings in buildings. He combines his field experience as an HVAC/R design engineer, background in simulation software development, and understanding of monetizing energy savings through appropriate M&V techniques to present a vision for transforming energy use in buildings. Mr. Balbach is member of IBPSA, AEE, and ASHRAE, and serves as programs committee chair of ASHRAE TC4.7 (Energy Calculations).


Dominique Durbin

Dominique Durbin Dominique Durbin serves as the Vice President of Durbin Geothermal, a full service looping contractor. As a cofounder of Durbin Geothermal, Durbin oversees all the duties and aspects of the company which currently consists of 7 vertical drilling units, 1 horizontal directional drilling unit, several excavators and trenchers, as well as a full complement of support trucks and tools. However, his favorite job is to drill ground loops.

Durbin has earned 12 years of experience designing and installing all types of ground loops throughout the Midwest USA. Durbin is Accredited Installer and Driller trainers of IGSHPA.



Ed Lohrenz, B.E.S., CGD

Ed LohrenzEd Lohrenz has worked in all facets of the geothermal heat pump industry since 1982, including residential system installation, manufacturing, equipment distribution and commercial system design. Ed is a partner in Geo-Xergy Systems Inc., an engineering consulting firm focused on the design and implementation of commercial geothermal systems. Projects completed by the firm include the first North American IKEA Store (Denver, CO) to install a geothermal system, a 1.5 million square foot district geothermal system (Winnipeg, MB) and a 750 home and commercial district geothermal system (Gibsons, BC). He has pioneered the integration of ice rinks and ice storage systems in geothermal applications, and has been involved in the design and implementation of over 50 geothermal ice rink applications, and has been involved in geothermal system designs in Asia and Europe.

Ed has been an IGSHPA Certified Instructor for the IGSHPA Installer Training course since 2001, and the CGD Plus workshops since 2010. He has taught commercial design courses with both the South Korean and Chinese IGSHPA Chapters as well as online. Ed is a member of AEE and ASHRAE, and serves as a voting member of ASHRAE TC 6.8 (heat pumps) and TC 6.9 (energy storage).


Fred Crick
Bosch Thermotechnology Group

Fred Crick Fred is a factory trainer for Bosch Thermotechnology Group for 3.5 years now. He, along with his team, is responsible for the residential sales, installation, technical, and product training for North America and Canada. Bosch's training classes include the Bosch IGSHPA class and are also starting a commercial training team.

Fast motorcycles, family outings, hunting with the boys, antiquing with my wife "Teresa", reading, and training are what Fred, also an ordained minister, enjoys doing. When someone's light-bulb goes off, or they contact him and describe their first geo- sale and install, he feels delighted. He refers to himself as some-what very geographically challenged (yet he travels).

Fred is an AI Trainer and CGD.


Garen Ewbank, C.E.M., C.G.D., C.R.M., C.E.A., C.B.E.P., C.S.D.P.
Ewbank Geo Testing, LLC

Garen Ewbank Garen Ewbank graduated with a Bachelor of Science in Industrial Engineering and Management from Oklahoma State University. He is a Lifetime Member of the Association of Energy Engineers (AEE) and he has served as a state officer with the AEE. He is a full Member of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). He has extensive HVAC/R, ground source drilling and installation, wireless systems and project management experience. He is a member of the IGSHPA Training and Marketing/Membership committees and past advisory council board member. Also, he is active on the Training and Marketing/ Membership committees, and sub-committees of the Certified GeoExchange Designer (CGD), and Vertical Loop Installers (Drillers). He is a Trainer for IGSHPA with the Vertical Drillers, Installers, and Certified GeoExchange Designer programs. He is the managing member of Ewbank Geo Testing, L.L.C. (DBA Ewbank and Associates), and GeoExchange Offsets, L.L.C. Garen has testified as an industry expert to the United States Congress and is a contributing writer for resources which publishes internationally.


Greg Wells
Jackson & Sons Drilling/Geothermal

Greg Wells Greg Wells is a geothermal sales engineer for Jackson & Sons Drilling/Jackson Geothermal in Mansfield, Ohio. He is responsible for commercial sales, commercial field design and installation quality control. Jackson Geothermal has installed thousands of tons of vertical geothermal heat exchanger systems from coast to coast.

Wells has 20 years of experience in the geothermal industry as an electric utility representative, a territory manager for a geothermal heating and cooling manufacturer, a general manager of a large geothermal installation company, prior to being employed at Jackson Geothermal. Wells is currently serving on IGSHPA’s Advisory Council, is an IGSHPA accredited installer and trainer and an IGSHPA/AEE Certified GeoExchange Designer.

Wells is the developer of the Accredtied Drillers Training for IGSHPA.


Jim Bullington
Oklahoma Department of CareerTech

Jim Bullington Jim Bullington is the Assistant State Program Administrator for Trade and Industrial Education at the Oklahoma Department of CareerTech and Program Specialist for the HVAC programs in Oklahoma. He previously served as a technician and trainer at the International Ground Source Heat Pump Association (IGSHPA), and is a Mechanical Contractor with eight years’ field experience including GSHP installations, both independently and while employed by IGSHPA. Bullington is a Certified IGSHPA Trainer and continues to present at IGSHPA certification workshops. Bullington holds a BS in Electronics and MS in Trade and Industrial Education from Oklahoma State University.



John Turley
Oklahoma Department of CareerTech

Jim Bullington John Turley is President of Middleton Geothermal Services LLC in Hilton Head, South Carolina. He consults in many facets of the GSHP industry including training and education, commercial design assistance, remediation and product market development. Previous to Middleton, he was a consultant in the Houston office of Data Resources Inc. working with customers in the electric utility and oilfield service industries. He is a Certified Geothermal Installer and Trainer and an IGSHPA/AEE Certified Geothermal Designer. He is a past IGSHPA Advisory Council Chairman and currently serves on the Marketing, Standards, and Training committees. Turley has a Bachelor of Arts degree in business economics from the College of Wooster and a Master of Science in mineral economics from Penn State University. Middleton Geothermal has been an IGSHPA member for more than twenty years.



Peter Tavino, PE, PC

Peter TavinoPeter Tavino is a Professional Civil Engineer, who operates his own consulting engineering business since 1986. He plans and designs ground source heating and cooling systems for residential and small commercial applications; assists the owner to secure well driller and HVAC contractor proposals; and inspects borehole grouting procedures, and documents As Built condition. He authored four online continuing education geothermal courses for professional engineers, and taught at local community colleges. His specialty is the outside loop work, not the interior refrigeration process systems.

Tavino is an Accredited Installer, CGA, Vertical Loop Installer and Trainer. He has taken Thermal Conductivity training as well, and is a LEED AP, and a former BPI Building Analyst. He also writes a monthly column for World Wide Geothermal Resources magazine. He is active in the New England and Connecticut Geothermal Associations.



Terry Proffer, CGD
Design Principal, Major Geothermal

Terry ProfferInvolved in the GSHP industry since 1993, Proffer spent over 15 years as a petroleum geologist prior to a second career in the mechanical professions.  Proffer has designed, consulted or installed on thousands of tons of heat pump capacity throughout the U.S, Canada, Europe and Asia, trained over 700 contractors and engineers through IGSHPA and other training resources, and consulted with Colorado’s Division of Water Resources to implement improved regulations for closed and open loop installations and licensing. In the past 5 years Proffer has designed and/or peer reviewed more than 15,000 tons of commercial and military GSHP installations, not counting residential and confidential commercial projects.

Since 2006, Proffer has provided technical advice and beta testing to Gaia Geothermal for their state-of-the-art commercial GLD closed loop design software.  Proffer also serves as an advisor to the IGSHPA CGD training committee, and is currently serving on the steering committee of the Geothermal Academy at Colorado School of Mines with support from U.S. Department of Energy and NREL.  In addition Terry serves the Geothermal Academy as a technical advisor and guest lecturer.  Proffer also provides input to the National Renewable Energy Laboratory (NREL) for their Geothermal Heat Pump road mapping project to define installation challenges and increase the use of GSHP technology.



Oklahoma State University Faculty and Staff

James Bose, Ph.D., P.E.
International Ground Source Heat Pump Association

picture of Jim BoseJim Bose has research interests in energy conservation and specifically ground-source heat pump technology. He has been principal investigator on a number of private and government contracts, including the Electric Power Research Institute, the National Rural Electric Cooperative Association, the American Society of Heating Refrigeration and Air-Conditioning Engineers, the Department of Energy, the Oklahoma Department of Commerce and others. He has traveled in conjunction with the International Energy Agency (IEA) to China, Sweden, and Austria in promoting ground source heat pump technology. He authored several design and installation manuals for ground-source heat pump systems. He is active in the International Ground Source Heat Pump Association and serves as the Director Emeritus. He works extensively with research agencies, manufacturers and contractors, and lectures extensively on energy conservation and the benefits of ground source heat pump systems.


Gerald R. McClain
International Ground Source Heat Pump Association

picture of Gerald R. McClainGerald R. McClain has joined the International Ground Source Heat Pump Association as Distance Learning Coordinator. McClain is establishing the use of digital web-based video conferencing to add online training capability for IGSHPA’s training efforts.  He has organized and designed an effective training website for installer trainers and is currently assisting IGSHPA’s Training Program Manager.

McClain, an Emeritus Professor, retired from Oklahoma State University as the Head of Mechanical Design and Manufacturing Engineering Technology, Division of Engineering, Architecture and Technology, in Stillwater, Oklahoma.

As Vice President of eLearning Innovations, Inc., from 1995 to 2006, McClain developed computer and web-based instruction and designed two-way video studios for instructional use.  McClain has held classes all over the United States and in a number of foreign countries to train both faculty and staff for a number of companies and organizations.


Roshan Revankar
International Ground Source Heat Pump Association

picture of Roshan Revankar Roshan Revankar, M.S., B.E.S.A. serves as the Training Program Manager at the International Ground Source Heat Pump Association (IGSHPA). Revankar manages, certifies and markets international program delivery for existing association training programs, and extensively promotes energy conservation and benefits of GSHP both in national and international levels. He is active in developing, approving and distributing new training programs in compliance with industry standards as well. He trains industry individuals with standards and best practices of geothermal installations.

Oklahoma State University graduate, Revankar, has research interests in ground-source heat pump technology deployment and has worked on contracts with Department of Energy to increase the job market in the geothermal industry. He is a certified Building Energy Simulation Analyst and has assisted in designing energy efficient geothermal systems.