easy to clean

I haven't had to clean it yet. I have owned many different humidifiers over time and this one is truly the best. I use distilled water. But even with distilled water there are usually some cleaning problems. The design of this one seems to minimize this problem. Every time I refill it I keep looking for some type of build up and there is none. I also like having the ability to change the direction of the humidity flow and the electronic humidity control. The tank only holds 2 gallons but it's fine for the area near the baby's room.