Review on 🏢 PureGuardian H7550 Ultrasonic Warm and Cool Mist Humidifier: Large Room, Home, Office - Easy Operation, Digital Display, Auto Humidistat, Timer, Auto Shut-Off by Becky Gilbert

Nice little things. Works well. However, false advertising ruined everything for us. We bought this particular unit BECAUSE this unit is rated for 90 hours of use so we don't have to keep refilling it. At the lowest humidity, the maximum time we get is 20 hours. And that's with two of them working in a 1,400-square-foot house. After a month of running a unit at each end of the house, the maximum run time before refilling is 20 hours. The only way to get 90 hours out of them is to leave them unplugged and use them like a paperweight.