The experiment tested how different levels of humidity in outdoor air affect the performance of an air conditioning unit set at a constant temperature. The outdoor air temperature stayed at 35°C while humidity varied from 40% to 70%. The results showed that as humidity increased, the suction temperature decreased, and the condensing temperature slightly increased. Despite these changes, the cooling capacity remained almost constant, only varying by 1.2%. A significant finding was that the condenser capacity increased by 15.2% when humidity went from 40% to 70%.