Just bought this and it's going back. The "high" mode sounds like a motor boat. We have other humidifiers and can't believe how loud this one is in comparison. Also, the way you fill the water tank is prone to spills and leaks. They took a simple idea and made it needlessly complex, with extra seals, valves, and balance. Not sure why it's so hard to make a good humidifier, wish Vicks/Kaz would have just stuck to the basics.