Breathe and sleep easy with this super quiet humidifier. This model purifies water and converts it into a soothing plume of vapor. The unit is shaped like a coffee maker, has a 10 x 6 inch footprint, and stands 1 foot tall. Clear blue plastic allows you to see how much water remains in the 1.5 gallon, 20-hour tank. A variable control provides fine tuning of mist output, and the dial on the lid allows you to direct the mist (away from curtains or bedding, for example). Even at a blast the sound is still barely audible. This tank lies flat for easy filling, but might be a bit hard to reach into for cleaning. Still, the replaceable filter strains impurities out of the water, leaving the air clean. Pop open the lid on this cartridge you'll find a phone number for ordering replacements.