Geo-Connections, Inc. designs software, develops training and creates resources for geothermal heating and cooling professionals throughout the world.  The small team of engineers based in Elkton, SD made their name in the geothermal industry as trainers and authors of the International Ground Source Heat Pump Associations (IGSHPA) Residential & Light Commercial Design and Installation Manual.  Geo-Connections expanded their focus to include the development of software tools for geothermal system designers and released their residential and light commercial system design software, LoopLink, in late 2009. Their latest software, LoopLink PRO is built for commercial geothermal system designs and was released mid-year in 2015.