I am very pleased with this humidifier. I've owned one prior that was SO loud, whereas with this one there is no sound or hum at all. I have it on a top shelf in my living room and it's not too big or gaudy, the wtyle and over all look is some what chic. The water tank lasts about 2-3 on medium and it is very easy to clean also. The opening is just big enough for my hand to slide in with a rag and wipe down.