Review on BONECO W200 Air Washer: Humidifier and Purifier for Improved Air Quality by Heather Taylor

Improves bedroom humidity. When the outdoor humidity drops below 5%, this device can increase the humidity in a 200 square meter room. Foot at about 33% with the door closed. This is of great importance for a comfortable sleep with allergies. I run the device at high power and find that the sound of the device's fan helps me fall asleep. To achieve 50% humidity in a 200 square meter room would probably require 2 of these units running at high power. Feet when the humidity outside is below 10%. CONS The water supply base needs to be 3 times larger to last 24 hours between waterings. Perhaps a larger base is optional. I live in a very dry climate at 2600 feet so the unit uses a full tank of water (or even slightly above the max level) in about 9 hours.