FIREPLACE COMBUSTION SYSTEM

A fireplace system having a fireplace cavity and a secondary combustion assembly disposed adjacent to a rear wall of the fireplace cavity. The secondary combustion assembly includes a plurality of combustion chambers configured to facilitat e secondary combustion. A plurality of inlets are disposed in the rear wall of the fireplace cavity. One or more of the plurality of inlets are configured to provide fluid communication between the fireplace cavity and a respective one of the plurality of combustion chamber s. An exhaust gas collection chamber is in fluid communication with at least the secondary combustion assembly. The exhaust gas collection chamber includes a vent configured to release exhaust gas into a chimney. An ambient air bypass aperture is disposed in a top baffle of the fireplace cavity. The ambient air bypass aperture is configured to diver t at least a portion of ambient air entering the fireplace cavity into the exhaust gas collection chamber.