The other way around. Generally it is best to create an insulated box that stays warm when it is very cold and then cool it down when it is hot - because the r

The other way around. Generally it is best to create an insulated box that stays warm when it is very cold and then cool it down when it is hot - because the reason it gets hot is due to increased energy outside (normally the big glowy thing in the sky) and that energy can be captured and used to power a house sized fridge. Energy to warm things up tends to be the sort of energy we can't really use any more.