Abstract: A metal front plate with a heat resistant seal around its edge forms an airtight cover over an existing fireplace face. Metal or glass doors in the plate allow logs to be placed in the fireplace. Primary air is regulated by dampers in the front plate on the doors. A fan housed in a grated housing outside the front plate circulates secondary air through a heat exchange tube system and out an orifice just above the doors. The front plate is clamped to the fireplace lintel and the tubes are raised by a leveling screw attached to the rear of the heat exchange tubes, drawing the bottom of the front plate firmly against the bottom of the fireplace front.