Power Breezers patented atomized evaporative cooling technology uses an “atomizer” to create a fine mist which is evaporated in order to cool the surrounding air up to 27 degrees Fahrenheit indoors or outdoors. Unlike a swamp cooler, no filters are required - which means less chance of mold and less maintenance - and unlike a misting fan or portable air conditioner, atomized evaporative coolers don’t get the surrounding environment wet or use lots of energy.