Bought this for my allergies as it's also an air purifier too. Have noticed a significant difference in the amount of dust in the room each week. High setting is pretty loud. Low setting is silent so it better for while your asleep. The humid air that comes out is cold, wish it had a choice of warm or cold and unfortunately yoy can't add essential oils to the water like some other brands but over all I'm still satisfied. Really does help with the hay fever and skin allergies.