FAQ How often should I clean the water tank? The water tank should be rinsed and cleaned daily when using the humidifier.Can I use household detergents to clean the tank? Yes, you can use mild household detergents, but make sure to thoroughly rinse the tank to remove any detergent residue.How long does it take for the washable filter to dry completely? The washable filter takes around 6 hours to dry completely and should be dried in a well-ventilated area, preferably outdoors.