1. Regarding the noise. There are two speeds - 1 and 2. In the night mode, I set it to 1, before going to bed, and during the day it works at 2. I don’t understand people who turn on 1 and cannot fall asleep. DO NOT LISTEN TO THEM. Nonsense. Well, if you put it next to you, of course, you will hear the noise of any fan. Yes, at the 2nd speed, if the room is quiet, then noise is heard. It is advisable to put it behind some box, higher than itself, so that it is not in direct line of sight, then when working at the 1st speed, the noise is almost inaudible. I stand behind the bed, no questions for him .
2. Regarding moisturizing, a few tips. As they say, there will be no immediate effect from moisturizing! It worked for me for about a week! and only when everything around was saturated with moisture did the humidity indicators begin to rise. In the first days of work, all the water evaporated in a day, after work, about two to three weeks, it lasts for about two days. All the time before use, the humidity value was about 18-20%, even less with open windows. And having arrived from the New Year holidays, the value was 10-18%! That's it. Doesn't fit at all. It is necessary to mute the batteries. If this is not done, the moisturizing effect is minimal, it has been verified in a practical way. With open batteries - the figure was 28-30%, and then at best, after muting - 48-52%. I was very surprised.
Even after ventilation for about 30 minutes (max. hour), the humidity rises again to the previous values. Again, the main thing is that everything around is saturated, otherwise nothing will change after airing and in an hour of work. Checked! In the previous review, apparently other nuances (heating, etc.) were not taken into account, so the author wrote so.
And in general, for a comfortable stay, the temperature in the room should not exceed 24 degrees, which is 29, what are you . By the way, I drive the water through the filter jug and pour it into a container. Then the water settles for another day or two, until the humidifier requires more. So far, no deposits have been noticed on the drum.