1 of 7
Safety First - Turn Off & Unplug the Humidifier
Unplug Humidifier Before Cleaning
Photo: © Mifflin
Always turn off and unplug your portable humidifier before starting any maintenance cleaning and relocate it to a stable, well lit surface. These steps for cleaning a humidifier and filter replacement are illustrated with the Honeywell HCM890 Humidifier and are very typical of most wick-type portable cool mist humidifiers.