Abstract: A fireplace heat exchanger that includes an air blower unit having an input for drawing air into the air blower unit and an output for expelling air from the air blower unit; a heat exchange unit, in airflow connection with the output of the air blower unit, having at least four heat exchange sections and an airflow passageway running through the at least four heat exchange sections and terminating in a heat exchange output port; at least one log retainer extending outwardly from an upper surface of the heat exchange unit; a heated air discharge manifold having a manifold chamber in airflow communication with the heat exchange output port of the heat exchange unit, an elongated air discharge vent formed through a front manifold surface thereof and two spaced manifold bolts extending from the front manifold surface thereof; a combination vent restricting and directing assembly that includes a pivoting deflecting panel, left and right deflecting panel supports extending from a U-shaped base plate having two par