I purchased the humidifier to use when I travel only. I have used it seven times and it cranks out a cool mist perfectly all night. You can change the amount of mist it shoots out also. Easy set-up each time. The only problem is finding the bottle to fit the attachment to insert into the machine. Love the color! The night light it has is not a problem. It is not that bright. I hope it works this well every time I travel.