How air source heat pumps work
Air source heat pumps absorb heat from the outside air. This heat can then be used to heat radiators, underfloor heating systems, or warm air convectors and hot water in your home.
An air source heat pump extracts heat from the outside air in the same way that a fridge extracts heat from its inside. It can get heat from the air even when the temperature is as low as -15° C. The heat they extract from the ground, air, or water is constantly being renewed naturally, saving you on fuel costs and reducing harmful CO2 emissions.
Heat from the air is absorbed at low temperature into a fluid. This fluid then passes through a compressor where its temperature is increased, and transfers its higher temperature heat to the heating and hot water circuits of the house.
- An air-to-water system distributes heat via your wet central heating system. Heat pumps work much more efficiently at a lower temperature than a standard boiler system would.
- Air source heat pumps are more suitable for underfloor heating systems or larger radiators, which give out heat at lower temperatures over longer periods of time.