BBCNEWS Breakfast March 31, 2022 05:20:00
In a darkened room. oh, yes! so you take that heat, and you transfer it into your central heating system. and because now you have compressed it, it's gone back to being a liquid, it can come out of the nozzle, get really cold, draw in the heat from outside and back into the pump, become a liquid again, releasing its heat, and it goes heat from the outside, you take one kilowatt or four kwh of heat inside your house. let's just repeat that. for any unit of energy you put in, you get between three or four out. so if they're so much more efficient, why aren't that is because we care much more ab...