Andrew Aitchison | In Pictures | Getty ImagesIn case you haven't noticed, heat pumps are hot. But there are other reasons why heat pumps are fast becoming popular with homeowners. All of this is transforming Carrier Global , the nearly 100-year-old manufacturer whose founder, Willis Carrier, invented air conditioning. Heat pumps have a history dating back to 1850s The thermodynamic science behind heat pumps was developed in the 1850s, when the first ones were invented, and they've been used in homes since the 1960s. Heat pumps use electricity to transfer heat from a cool space to a warm space, making the cool space cooler and the warm space warmer.

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Persons: CARR, Andrew Aitchison, Willis Carrier, David Gitlin, Carrier, Hakan Yilmaz, Yilmaz, they've, Michael Kretschmer, Sebastian Kowalski, Kretschmer, Tobie Stanger, Dave Lis, Viessmann, Milena Oliveira, Oliveira, Mark Prodan, Prodan, There's Organizations: Carrier Global, United Technologies, Solutions, East Trade Policy, Getty, International Energy Agency ., U.S . Climate Alliance, Consumer, Energy Efficiency, Carrier, M, Energy Star Locations: Gardens , Florida, Saxony, Leipzig, America, U.S, Maine, Michigan, Indian, Connecticut, New York State