A compact, self-contained solar heat collector is disclosed which is particularly suited for addition to new or existing structures in the form of window shutters, exterior siding, awnings, columnar elements and the like. The exterior glazing (32) of the collector includes undulating transverse pane segments (36, 38, 118, 156), the angle of which is chosen to optimize insolation during winter months. Beneath the preferably sharp peaks and valleys of such undulations is positioned a heat absorption, storage and exchange assembly (42-64) which defines an enclosed heat transfer cavity (42, 122, 134, 142) through which a heat transfer fluid such as air is directed.