Abstract: There is provided an improved heating device which utilizes a standard forced air solid fuel burning stove enclosd in a metal box and surrounded by a layer of thermal insulation. A metal shield surrounds at least the upper portion of the stove with air spaces provided between the stove and the shield as well as between the shield and the insulation on the walls of the box. The outer surfaces of the walls of the heating device are adapted to come into direct contact with combustible building materials, thus solving the clearance problem associated with most solid fuel burning stoves.