Overall, it does the humidifying job - but there are two gripes i have with this unit: 1) the tank is not detachable so you need to unplug the whole unit and take the entire whole thing (w/ power cord..) to a sink to fill it up. Cumbersome and unhelpful design choice. 2) the "on" light on it is very violently bright when trying to use it overnight - it basically lights up the whole room. Will put a piece of electrical tape over it to mute it, but poor design choice here as well.