Various forms of heat pumps—refrigerators, air conditioners, heaters—are estimated to consume about 30 percent of the world’s electricity. And that number is almost certain to rise, as heat pumps play ...

Heat pumps are the most energy-efficient way of controlling indoor temperature. By moving heat between locations, they avoid the inefficiencies of generating heat in the first place. But that doesn’t ...

A heat pump heats and cools your home, functioning like a combined furnace and central air conditioner. Because it absorbs and moves heat from the air, it is exceptionally energy-efficient and ...