I've only used this for about three months since I bought it new. I'm selling it because I haven't used it much and have been storing it. It's a two-in-one unit that humidifies while warming you with a fan heater! Operation has been confirmed. It works without any problems, but the motor sound is noticeable only when humidifying, so I'm offering it at a reduced price. Equipped with a Plasmacluster function!