The operation of a Water Source Heat Pump is covered in the general Heat Pump section on the link here, but in summary, the Water Source Heat Pump extracts thermal energy from the water (cooling the source) and via the process of refrigeration produces high-grade heat for use within the building, district heating system or process.
In this context, water can be derived from many sources, and therefore can be installed in a range of different environments and locations to suit your needs.
Output temperatures can be anywhere from 30 to 120C with capacities from 30 to 3,000kW.
Water represents a high-value source as it is available in abundance and produces a lot of power. Water Source Heat Pumps can deliver realisable levels of highly efficient performance.