It can be easily and intuitively, even the exchange of spare parts is easily possible. In operation at level one, the device is almost not heard, even in the bedroom. There is a slight fan noise perceived that Allerding not obtrusive in my ears. in the 2nd and 3rd stage however the device for use in the bedroom is no longer suitable. The lighting is very disco default, but can be switched off.
Unfortunately, it has now set a slight hum of the power supply after einegen weeks, the typical 50 Hz hum that you know so. It's not really loud at night but if the fan (at 20 min, 20 min off) in Auto mode does not work perceptible. The device is with us on stone floor, a deal truncated piece sleeping pad on which the appliance is now but the noise mitigated. There are several modes, including a ozonation, which is not recommended while you are in the room. The "ozone smell" is clearly visible and can affect health by various sources on the Internet. A useful application of this feature may well be the deodorization in vehicles.
It is also possible to distribute essential oils or the like with the device, I do not use that.
It must be remembered that according to instruction, the device should be removed at least 30 cm from walls and the unit draws the side, and gives up. an application under the table is so so not recommended.
Whether air quality is better? Hard to say.
In fact, the dust in the room has become something less, especially in places under the bed or on the bedside tables. The use of the UV lamp, which is intended to kill germs ... I do not know.
I'm not allergic and have in themselves no impairments. In my office is due to its proximity to fields and agriculture but a significantly increased exposure to pollen and dust given. Especially if the device is umschaufelt night air, the room air in the morning much more pleasant (with the windows closed after airing). Again, the dust has just reduced to my shelves and for example on the monitor like at home. As I clean these surfaces regularly even I can also compare actual.
Clean the feeling ago I'd say the device actually brings in my 16 square meters of office what. Whether I can be fair, lack of experience for allergy sufferers with problems caused by pollen or the like does not help saying.
For the price, the device can, however, so a lot and therefore support at least the placebo effect sufficiently.
update:
After some time, scientists have shown even with my two devices as in other Beschreibeungen described a slight 50 Hz hum a. In the office, practically imperceptible, in the bedroom on stone floor somewhat unpleasant. If you set the device to foam or the like, it is, unfortunately, however, a noise Sensitive certainly to the hum can interfere. Whence comes or how to turn it off, I do not know.
Nevertheless, I am still very happy with it.
In admittedly somewhat limping office compared the filtering effect seems already determined. Over the Christmas holidays, the dust was significantly lower in my office in comparison with the neighboring office. The company had to and the device ran through every 20 min automatic mode. There was significantly less on my desk than my neighbor, so I would say sometimes it actually causes what.
In this sense