A wood burning stove comprises top and bottom portions and unitary metal side panels having inwardly extending manifold sections running from the rear of the stove towards the front. Each said manifold section is formed by bending the metal to form a channel which lies wholly inwardly of the outer plane of each such panel, a unitary rear panel having an inwardly extending manifold section across the rear of the stove. The side manifolds extend from the front to rear of the stove, the end of each manifold being closed. There is an opening in the rear portion of each said side manifold and an opening in each end of said rear manifold, said openings in the side manifolds being aligned with the openings in the rear manifolds to permit passage of air from the rear manifold to the side manifold. There is a cover plate for each side manifold having hot air exit openings and a cover plate for the rear manifold having a cold air inlet opening with a blower mounted for forcing air into said rear manifold and out through the covers on said side manifolds.