HOW HEAT PUMP SYSTEMS WORK
Heat-pumps are electrical devices which convert energy from the air outside of your home into useful heat, in the same way a fridge extracts heat from its inside. In well insulated houses they are very economical to run. They are an extremely efficient alternative to oil, gas, solid fuel and electric home heating systems.
Different types of heat pump systems draw heat from different sources: air, water or the ground. Heat generated is released via radiators, underfloor heating or warm air. All heat pump systems, excluding those providing warm air to the home, can supply all of the hot water needed for baths, showers and sinks.
HEAT PUMP SYSTEM TYPES
The most common heat pump systems extract heat from external air, typically using an outside unit. These heat pump systems do not require underground piping to source heat and so can be cheaper and easier to install compared to ground source heat pump systems. The most popular heat pumps are air to water heat pumps.
A ground-source heat pump system uses the earth as a source of renewable heat. Heat is removed from the ground through collector pipework and then transferred to the heat pump. The ground collector can be laid out horizontally at a shallow depth below the surface or else vertically to a greater depth.
Water source heat pump systems use open water, such as lakes, rivers or streams, as a heat source. Heat is removed from the water through collector pipework and then transferred to the heat pump.