A comment
In each room of the apartment there are two batteries, so in winter the air becomes dry. This winter, parents decided to buy a humidifier, in order to get rid of dryness, but unfortunately, it did not work out exactly what we expected.
Their choice fell on the Philips HU4803 humidifier, the device is peculiar and, in my opinion, the money only spent in vain on it. In the management of course there is nothing complicated, poured water, plugged into a power outlet and in front. But it works just unrealistically noisy, it is impossible to fall asleep under it, it constantly rumbles.
The main problem is the paper filter, which now and then becomes dirty and turns from whitish to red. It has become problematic to buy filters every time, they are not cheap and with such a rate of pollution you can simply go broke. Spending on filters will quietly surpass the cost of the filter itself after a year of use.
Minuses
The filter gets dirty quickly.