WATER-SOURCE HEAT PUMP
Hydro Heat Pump - WSHP
Water source heat pumps (WSHPs) move heat from a source of water - either from a river or small stream.
They use the constant temperature of the water as an exchange medium instead of extracting the heat from the outdoor air temperature.
Thus, water source heat pumps can reach reasonably high efficiencies (300% to 600%) even on the coldest winter nights, in comparison to 175% to 250% for air-source heat pumps on cool days.
Oxon Energy has installed water-source heat pumps using closed loop lake connectors and energy blades in Oxfordshire and Hampshire.