Comfort and peace of mind, Who could ask for more? This unit runs throughout the night on one tank so you need not worry about frequent refills, Humidistat lets you set the level that is just right for you, Filter treated with antibacterial protection and Arm & Hammer odor-reducing technology, This unit runs throughout the night, no need to worry about frequent refills, Humidistat lets you set the level that is just right for you, Microban antibacterial protection, Filter treated with antibacterial protection and Arm & Hammer odor-reducing technology, SKU: AZERTY4177