We’re talking of home heating where the ground source heat pumps are rare. Here’s an article explaining how they work. Efficiency is 200-300% https://www.fin

We’re talking of home heating where the ground source heat pumps are rare. Here’s an article explaining how they work. Efficiency is 200-300% https://www.finehomebuilding.com/2020/04/08/how-efficient-are-heat-pumps-really https://www.finehomebuilding.com/2020/04/08/how-efficient-ar...