An air conditioner works by absorbing heat from the indoor air and transferring it outside through a refrigeration cycle involving four main components: the evaporator coil, compressor, condenser coil, and expansion valve. The evaporator coil inside the unit absorbs heat from the room air and cools it, while the refrigerant carries that heat to the outdoor condenser unit where it is released. The cooled air is then circulated back into the room through a fan, and this cycle repeats continuously until the room reaches the temperature set on the thermostat. In addition to cooling, most air conditioners also remove humidity from the air, which is particularly important in a tropical country like the Philippines where high humidity can make heat feel more intense.