SpaceBus
Minister of Fire
The losing heat after the fire goes out is important, but the title is literally correct, even if that doesn't count for anything.On the other hand, indeed not *all* the heat goes up thru the chimney. At least a small fraction stays in the home when it's burning. So I have to adi that the title is not wrong.
Unfortunately, homes with fireplaces loose that much heat during burning and when not burning (! The latter are the majority of the hours in a year..), that homes with fireplaces use more energy to be heated than homes without fireplaces. See that (peer reviewed) article I mentioned a while back.