Infographic: How Heat Pumps Work
These marvels of thermodynamics can extract heat from chilly air. Find out how they work.
Heat pumps improve on standard electric heating. Rather than use electricity directly, heat pumps take advantage of the thermodynamic properties of a refrigerant to move heat from one place to another. By some estimates, the amount of heat a heat pump can bring to a space can be as much as twice the energy content of the electricity needed to run the device.
That sounds like magic, but heat pumps involve standard engineering. Here’s how they work.