Climate change: Cardiff study says ground-water could heat homes - BBC News
How does a ground source heat pump work? | BBC Science Focus Magazine
Schematic of groundwater heat pump systems[58] | Download Scientific Diagram
Energies | Free Full-Text | Thermal Impact by Open-Loop Geothermal Heat Pump Systems in Two Different Local Underground Conditions on the Alluvial Fan of the Nagara River, Gifu City, Central Japan
About Heat Pumps ~ KETE-RVS ~ Overview, function and advantagesKETE-RVS
Geothermal Heat Pumps | Department of Energy
How To Utilize Ground Source Heat Pump Systems for Increased Energy Efficiency - tekWorx
How Geothermal Heat Pumps Could Power the Future | Live Science