Honeywell HUT-220W Easy to Care Cool Mist Filter Free Humidifier Easy to Fill Filling is as easy as watering a plant.Circulating water indicates unit is operating.1.0 Gallon Tank Capacity Easy to Clean Removable dishwasher safe parts.Easy Wipe Surfaces.No filters Required Easy to Use.Illuminated Water Window/Auto Shutoff indicate when to refill.Variable Mist control Great for Small to Medium Rooms such as bedrooms.Runs up to 46 hrs per filling Easy to Fill technology - filling easy as watering a plant! Silently provides visible moisture w/ variable moisture output settings Runs up to 46 hours per filling - Small to Medium Room Size Continuous water flow keeps water fresh Dishwasher safe top, easy sponge access to water reservoir