In our new (old) house, there's a log burner in one room, the others having normal gas CH radiators.
It sits in front of a fireplace on the hearth. The fireplace is little more than a cuboid opening in the chimney breast with the flue going in to the back of the burner.
We haven't used it and don't really want to. Altering the fireplace would be very difficult.
I envisage losing the log burner and plumbing in a radiator in the fireplace cavity. It would have to be short and deep to fit the cavity, but could have quite a large surface area. Maybe it would need a fan.
Trouble is, I can't see anything suitable, which may just mean it's a bad idea.
Anyone done this?