A device that transfers heat from a low-temperature medium to a high-temperature medium is called a heat pump.
Heat pumps move heat from one medium with a low temperature to another with a high temperature. The only difference between a refrigerator and a heat pump is in their intended uses.
For all climates, heat pumps provide an effective replacement for furnaces and air conditioners. Similar to typical refrigerator, heat pumps use power to move heat from one room to another, making the warm room warmer and the cool one cooler.
Therefore, the correct answer will be" heat pump".
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