Superphil
Dismember
You say that, but when we light ours we are able to shut off both radiators and the log fire heats the entire room pretty well. It's not a small room, and it's not a very big fire, but does a lovely job of warming us up and looking lovely.I've got one, but in recent years stopped using it when winds fall light and always run it hot.
If you get a decent one they are quite efficient, open fires far less so. Look pretty but close to useless for generating heat.