Bought six months ago, on the recommendation of a friend of the allergist. The doctor gave a tip on 3 devices with the correct parameters and filter characteristics, but 2 of them were significantly more expensive. I took it mainly because of my elderly father, he is allergic to house dust and despite the fact that we clean often, but either because the house is an old stalin and the repair is not new, or after cleaning the dust suspension rises, but the allergy completely tortured him, he can’t live without a corticosteroid inhaler. My husband also fell ill with covid and we had to isolate our father in the apartment, but there are still intersections, we wanted something disinfecting. Just in this model, there are 2 main parameters. I can’t say anything about disinfection, but the lamp in it is UV, if you pull out the filters and turn it on by closing the front panel, you can see that it shines strongly. But the father, thank God, did not get sick while the husband was at home for 3 weeks with the virus. Maybe the filter helped. And here the allergy really began to appear less. Those who, by misunderstanding, expect that there will be less dust in the apartment, as I read the reviews here, these are ridiculous expectations) Just imagine what kind of device can raise dust from all surfaces of your apartment, even if sometimes you blow on the dust, then it half will remain on the surface, as static. No air purifier will get rid of large household dust! But he gets rid of the smallest most harmful and volatile dust, and this can be seen from the fact that dad has been doing almost without an inhaler for 2 months. We didn’t use any other functions, I can’t comment, but it helps a lot against pollen and fine dust. In terms of noise in the minimum of 3 modes, it is quiet, and we only use it in the minimum. They haven’t changed the filters yet, it’s definitely enough for six months. I can’t tell by the smells how much it helps, I sniffed in my apartment, and the daughter of a friend once said, being our guest, that we smell less old than before, well, the children know better.