Your Blueair humidifier is safe to use with clean water of your choice, including tap.

• Note: the use of tap water may increase the buildup of minerals and staining on your wick, depending on the source and quality of your tap water.

To clean, remove the wick filter from the filter cage and rinse under running water. For a deeper clean, soak with mild or citric acid cleanser, 20g citric acid for every 1L of water for 1 hour, then rinse well under running tap water according to the instructions in the user manual.