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 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 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. <EOS>