Air source heat pump

Common card · No. 322657

An air source heat pump (ASHP), the most common type of heat pump, can absorb energy (heat) sourced from cold ambient air outside a building, and release the energy at a higher temperature to heat the building, either via hot air or hot water. Electricity powers the mechanical pump (compressor), the used electric energy providing typically 3 or 4 times more pumped thermal energy than simple resistive Joule heating. Heat pumps use the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction, or rather source and target can be exchanged, vice versa. With ambient air accessible nearly everywhere, ASHPs are the most common type of heat pump and, usually being small, tend to be used to heat individual houses or flats rather than blocks, districts or industrial processes. Air-to-air heat pumps provide hot or cold air directly to single rooms, but do not usually provide hot water. Air-to-water heat pumps use water pipes and radiators...

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