I chose a week, read reviews of everyone and everything, from cheap to expensive. Expensive at the end threw away. The bells and whistles, such as mobile control, a marketing ploy. What the hell is this? The humidifier (purifier) should always work. Turn it on and just add water. Two modes, intense during the day, quiet before bedtime. I have been working for a day, I have already caught a lot of dust on the preliminary. Well, this is understandable, I have a repair, where without it. Someone See full review