30 September 2015
Under the American Recovery and Reinvestment Act , twenty-six ground source heat pump (GSHP) projects
were competitively selected and carried out to demonstrate the benefits of GSHP systems and innovative
technologies for cost reduction and/or performance improvement. This article gives an overview of the case studies for six of the systems. These case studies evaluated efficiencies, energy savings, and costs of the demonstrated systems. In addition, it was found that more energy savings could be achieved if controls of GSHP system are improved.