This moisture humidifier is compact and provides germ free mist based on its nano-sliver antimicrobial technology which prevents the growth of mold or bacteria. This technology negates the need for troublesome filters or pads which plague many humidifier models on the market today. Mist settings include both cold and warm moisture depending on personal preference. The tank holds 1.4 gallons and can run for up to 72 hours without being refilled. Price: $169. Buy product: here.