Stephen Hamstra is a registered professional engineer, an AEE Fellow & Certified GeoExchange Designer/CGD, an ASHRAE High Performance Building Design Professional and he also serves as the Chair of ASHRAE’s Technical Committee TC 6.8 Geothermal Heat Pumps and Energy Recovery Applications.

Steve obtained his mechanical engineering degree from Michigan State University and has been active in the application and engineering of earth-coupled HVAC and energy recovery systems for 40+ years, designing systems from 2 to 1,000+ tons in the USA and Globally. He has served as Director of Engineer for two AE firms, the largest having more than 200 professionals on staff.
Steve has been active in the development of new technology for the design and control of geothermal heat pump applications and is currently the lead engineer on a DOE-funded research project at Melink Solar & Geo that is focused on reducing the first cost of geothermal heat pump applications.

In addition to his work at Melink, Steve is a member of The GreyEdge Group, a collection of very experienced geothermal practitioners that also have a depth of experience in the design and optimization of Thermal Districts as well as potable & wastewater energy recovery.