Portable Air Conditioner integrates the internal and external units of traditional hanging air conditioners into a whole and uses compressors, condensers, evaporators, and refrigerants for refrigeration. Portable Air Conditioner is an air conditioner that can produce cold air. The cooling fan is essentially electric, but it has a built-in water-cooled device that has been slightly upgraded, that is, you need to add water to it, preferably ice cubes to have a cooling effect. The built-in water pump keeps the water in the machine continuously and circulates thereby cooling the surrounding air. So what is the difference between Portable Air Conditioners and Air Conditioner fans? Here are some answers.