heat pump

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heat pump

A device that takes heat from one location (such as the ground, air, or water) and brings it to heat another (such as the inside of building). If the temperature from the outside source isn't enough to heat the building, electricity is used to boost it to the required temperature. The efficiency of a heat pump is measured by its coefficiency of performance (COP). See 'air source heat pump' and 'ground source heat pump'.

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