https://www.sciencelearn.org.nz/resources/241-heat-pumps-and-energy-transfer https://www.sciencelearn.org.nz/resources/241-heat-pumps-and... Heat pumps use a s

https://www.sciencelearn.org.nz/resources/241-heat-pumps-and-energy-transfer https://www.sciencelearn.org.nz/resources/241-heat-pumps-and... Heat pumps use a small amount of energy to move thermal energy, but it's much more efficient than resistive heat. But if they can't move enough heat, they fall back to resistive heat to top it up.