A fireplace has a hearth having an upper and a lower air supply openings, an upper and a lower deflectors, a first air supply channel being defined by the upper deflector and a door of the fireplace, the first air supply channel being in communication with the upper air supply opening and has an outlet facing a bottom of the hearth, the lower deflector having a concave surface facing a back wall of the hearth, a second air supply channel being defined in the back wall of the hearth, the second air supply channel being in communication with the lower air supply opening, and a plurality of air supply holes.