https://www.scientificamerican.com/article/the-u-s-is-ignoring-the-climate-benefits-of-heat-pumps/

A new study says the wider use of heat pumps for heating and cooling homes and buildings could sharply reduce global fossil fuel emissions, but the solution has received relatively little policy support from governments, and its advantages are poorly understood by consumers.

The study, led by researchers from Columbia University’s Center on Global Energy Policy, suggests that further innovation with heat pumps combined with regulatory measures such as a carbon tax could eliminate 12% of global greenhouse gas emissions from the heating and cooling sectors.