GEOEXCHANGE TECHNOLOGY  How It Works Residential GeoExchange System Diagram Click For Enlargement Geoexchange technology operates on the principle of transferring heat to/from the earth through physical coupling with soil, rock, surface water, or groundwater. A range of site-specific factors including geology, hydrogeology, proximity to surface water, local climate, and building characteristics determine the suitability and cost-effectiveness of various ground-coupling options for any given site. Hemmera Energy applies a focused and objective approach to identify appropriate coupling options with a view to improve performance and reduce cost. Common coupling options that are often considered include: Vertical closed-loop ground heat exchanger (GHX) Horizontal closed-loop GHX Groundwater extraction and re-injection (open loop) GHX Closed or open loop surface water GHX (e.g., lakes, ponds, rivers/streams, ocean) Using shallow groundwater dewatering systems as a GHX Exchange of heat with other buildings or industrial processes with a closed or open loop GHX for buffering capacity Adapting a closed-loop GHX for cross-season heat storage (i.e. rejected heat in summer available for recovery in winter)    GEOEXCHANGE SYSTEMS View the movie: 'How Geoexchange Systems Work' Compliments of the Geothermal Heat-Pump Consortium