[crz]

A fireplace insert is about the only way if you dont have the heat ducks built into your fireplace.

Fireplaces are not a good way to heat. To do any heating at all with them you must keep them going 24/7. Expect to use tons of wood if you do.

They do become better with an insert.

[winodog]

Actually thats not true.

http://www.pyromasse.com/infoe.html

[Chickensoup]

heat ducks

quack, quack.

Bind them together with duct tape.