U.S. Department of Energy - Energy Efficiency and Renewable Energy
Geothermal Technologies Office
Geothermal Heat Pumps - Heating Mode
In winter, fluid passing through this vertical, closed loop system is warmed by the heat of the earth; this heat is then transferred to the building.
- Heating Mode Animated Slide (PowerPoint 493 KB)
Note: To view this animation in PowerPoint use 'Slide Show' mode.