Abstract: A wood heater having an elongated cylindrical firebox with a door access at one end. A secondary heat chamber is located on a top side of the firebox, interconnecting the firebox to a flue adapter ring. Hot combustion gases are directed from the firebox through the second heat chamber to the flue adapter ring. A heat exchanger is positioned above the firebox within the heat chamber to extract heat from the burning gases and to direct the heat outwardly of the firebox and into the adjacent room. A window case protrudes from one side of the firebox and includes a glass pane for viewing the fire. The window case includes a shutter plate assembly that selectively closes off the fire from view through the window. The shutter plate has the additional function of directing ventilation air from the window vent aperture to cool the glass within the window case, protecting the glass pane from excessive heat, and preventing build-up of soot along the inwardly exposed surface thereof.