7 June

I love heat pumps, we should all get rid of wood and gas fires and use heat pumps instead. Some of the amazing physics. These two scenes, one obviously looks much 'hotter' than the other. But actually there's about 80-90% as much energy in the air on that frosty morning as there is on the stinking summer day. Heat pumps don't generate heat or cool anything, they just move that existing heat around. They can provide 5 times as much heat or cooling as the electricity they use, up to 600% efficient. No other form of heating or cooling even gets close to 100%.