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heat pump

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WordReference Random House Unabridged Dictionary of American English © 2026

heat′ pump′,

Energy, Thermodynamicsa device that uses a compressible refrigerant to transfer heat from one body, as the ground, air, or water, to another body, as a building, with the process being reversible.

1890–95

Collins Concise English Dictionary © HarperCollins Publishers::

heat pump n

a device, as used in a refrigerator, for extracting heat from a source and delivering it elsewhere at a much higher temperature

'heat pump' also found in these entries (note: many are not synonyms or translations):

energy efficiency ratio

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geothermal heat pump system

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