The scheme of the solar collector consists of 13 copper tubes welded to the L–shape aluminum fins. This configuration is positioned between the glass cover and the insulation. Daily mean efficiency and instantaneous efficiency increased both of the 50% for water heating mode and 52% and 55% in air heating mode, respectively. In air heating condition, the temperature of the outlet air decreased with the increase of the flow rate. The configuration of the dual function solarcollector, with L-shape fins welded tothe copper tube, presented good values of efficiency compared to theoretical and experimental models.