A high-efficiency air water system for a tropical climate comprising: an air suctioning unit for suctioning and supplying external air, a water generating unit for condensing moisture in the air supplied by the air suctioning unit and generating water, and a water purifying unit for filtering and purifying water generated by the water generating unit so as to turn the water into drinkable and usable water, the water generating unit comprising: a main body having an accommodation space therein, an open upper side connecting with the air suctioning unit, and a perforated portion formed at a lateral surface thereof; an evaporator horizontally installed at the upper side inside the main body and cooling external air suctioned through the air suctioning unit to a temperature equal to or below dew point; a hopper formed at the lower portion of the main body, supporting water generated by the evaporator, and having an outlet (23`) on one side thereof so as to discharge water outwards; a water storing part installed at the lower side of the main body, and supplied with water discharged through the outlet (23`) and collecting the same; a condenser vertically installed at the perforated portion of the main body and having a fan formed at the outer surface thereof so as to discharge cool air in the main body outwards; and a compressor connecting with the evaporator and the condenser and compressing a circulating refrigerant, wherein inlet and outlet refrigerant tubes of the evaporator are provided with dual pressure switches (25A, 25B) that are turned off so as to obtain water by melting frost on a cooling pin of the evaporator when pressure values measured by a pressure sensor are not within a range of set pressure values, the outlet is provided with a U trap so as to prevent a reduction in the amount of air introduced into the main body while blocking air introduced through an outlet from the outside. a main body having an accommodation space therein, an open upper side connecting with the air suctioning unit, and a perforated portion formed at a lateral surface thereof; an evaporator horizontally installed at the upper side inside the main body and cooling external air suctioned through the air suctioning unit to a temperature equal to or below dew point; a hopper formed at the lower portion of the main body, supporting water generated by the evaporator, and having an outlet (23`) on one side thereof so as to discharge water outwards; a water storing part installed at the lower side of the main body, and supplied with water discharged through the outlet (23`) and collecting the same; a condenser vertically installed at the perforated portion of the main body and having a fan formed at the outer surface thereof so as to discharge cool air in the main body outwards; and a compressor connecting with the evaporator and the condenser and compressing a circulating refrigerant, wherein inlet and outlet refrigerant tubes of the evaporator are provided with dual pressure switches (25A, 25B) that are turned off so as to obtain water by melting frost on a cooling pin of the evaporator when pressure values measured by a pressure sensor are not within a range of set pressure values, the outlet is provided with a U trap so as to prevent a reduction in the amount of air introduced into the main body while blocking air introduced through an outlet from the outside.