A thermosyphonic solar water heating system was designed and fabricated from available materials. The risers of galvanized iron are fixed to an aluminium absorber plate by using an Omiga-in and Omiga-out technique. The collector absorber has an aperture area of 127 cm × 91 cm and is connected to a storage tank with 124 1 capacity. The system was then tested under the climatical conditions of Aden City. The performance of characteristics of the system, under ‘nondrawn off’ and ‘drawn off’ hot water conditions, are experimentally determined and then compared with the theoretical results. The results are quite satisfactory. The maximum efficiency reached 79%, with mean storage tank temperature of 60° C.