NOVELTY - A tri-vent awning window for absorbing sunlight heat in warm weather and discharging the sunlight heat to the atmosphere, comprises an inner pane (24), and an outer pane (26). The inner pane has an in-place position and the outer pane has an open position during which, in the warm weather, the sunlight heat hits the heat sink and passes through it and rises by convection. The inner pane has a removed position and the outer pane has a closed position during which, in the cold weather, interior sunlight heat is circulated from the space.    USE - The tri-vent awning window is used for absorbing sunlight heat in warm weather that otherwise would flow uncontrolled through it and discharging the sunlight heat to the atmosphere while permitting relatively unobstructed vision through it and passing the sunlight heat in cold weather through it for thermal warming (claimed).    ADVANTAGE - The tri-vent awning window is used for absorbing sunlight heat in warm weather that otherwise would flow uncontrolled through it and discharging the sunlight heat to the atmosphere while permitting relatively unobstructed vision through it and passing the sunlight heat in cold weather through it for thermal warming.    DETAILED DESCRIPTION - A tri-vent awning window for absorbing sunlight heat in warm weather that otherwise would flow uncontrolled through it and discharging the sunlight heat to the atmosphere while permitting relatively unobstructed vision through it and passing the sunlight heat in cold weather through it for thermal warming, comprises a frame (16); an inner pane (24); an outer pane (26); and a heat sink (28). The inner pane is either replaceably or hingedly mounted to the frame so as to form a first vent. The outer pane is pivotally mounted to the frame so as to form a second vent. The outer pane is spaced from the inner pane so as to form a space therebetween. The heat sink is removably mounted to the frame, in the space, and when removed, creates a passive solar application. The inner pane has an in-place position and the outer pane has an open position during which, in the warm weather, the sunlight heat hits the heat sink and passes through it and rises by convection. The inner pane has a removed position and the outer pane has a closed position during which, in the cold weather, interior sunlight heat is circulated from the space.    DESCRIPTION OF DRAWING(S) - The drawing shows an enlarged diagrammatic cross sectional view of the tri-vent awning window.    Frame (16)    Inner pane (24)    Outer pane (26)    Heat sink (28)    Upper cross member (42)