Energy Savings from Dual-Source Heat Pump Technology

The purpose of this Technology Installation Review is to provide an overview of an assessment of an energy-efficient dual-source heat pump. The dual-source technology is a hybrid system that includes the use of both air and geothermal sources for the condensing process in the cooling mode and the evaporating process in the heating mode. The dual-source technology enjoys more favorable economics than a traditional ground-source heat pump, as the ground loop requirements are significantly smaller, reducing the initial cost of the system. Included in this review is a discussion of the results of a field demonstration of a 3-ton system at Fort Stewart, Georgia, and a commercial retrofit demonstration for the U.S. Post Office in Valrico, Florida.