Air conditioning can also be more than 100% efficient (from the point of view of the heat in the room), because it's moving heat from inside to outside. If you'

Air conditioning can also be more than 100% efficient (from the point of view of the heat in the room), because it's moving heat from inside to outside. If you're using electricity to heat your house, it's only 100% efficient because each kw is being dumped directly into the air. This is why heat pumps are so great, they're basically just ACs in reverse, so for 1 kwh of electricity, you'll get more than 1 kwh of heat in the air of your house.