First, this was easy to unpack, did not use excessive plastic packing and the setup, both manually and the app, is easy. Changing the filter equally simple. In the night setting there is still an LED turned on (the one indicating the operating mode) although the front LED that indicates how clean the air is turns off. The LED is dimmable and I could dim it further but I want to be able to see it when I do the settings. I can't understand why that LED does not turn off in night mode unless you press a button. The filter seems to be good quality and various options are available. The sensor works quite well it seems. This is in the bedroom so at night we have it in night mode, early afternoon it dose a couple of hours at full strength to help distub and filter dust, the rest of the time it is in auto. In that sense allowing various timer driven settings in the app is very useful. If I disturb a lot of dust, or if we have been frying food for example it ramps up as expected and cleans the area quickly. The app grphics about the history of air cleaness can be a bit weird to navigate but generally the app works well. The filters are expensive, I note some 3rd party are avilable that are proably adequaate for my needs. It does remove odours well, in terms of dust I think it has helped but certainly not perfect throug the whole room. The noise level in night mode (and when air quality is excellent in auto mode) is very low although I think it is quite loud when doing the higher settings. The air movement is quite small in the lower speed modes so unless it ddetects something enough to make it ramp up, I can't really see it improving the area stated. Read more

This air purifier (3250i) is not small, but after downloading the app and setting schedules for daytime & night time operation, the running costs are negligible, but the best thing about this purifier is how quiet it is on auto mode, it obviously will increase the fan speed depending on the quality of the air, the night mode is ( unless you put your ear up close ) is really very quiet and did not disrupt my sleep. This has been running none stop for two months and certainly has made breathing so much easier, the cost is maybe a few pence a week. Read more

The only way I can describe it is it is like the air is made of vanilla ice cream; it just feels and smells fresh and amazing. The device is extremely quiet and costs almost nothing to run. Read more

Good quality air purifier. Leaves air feeling fresh and is much quieter than all previous purifiers i have owned. Pleased with purchase and would buy again. Read more

Product as described. Can get loud when air is polluted. App works fine. Simple and effective Read more

It doesn’t detect any smell in the room and consequently doesn’t turn on in automatic mode. Update after 6 months: it completely stopped working and there’s no warranty. Read more

Bought this item thinking it would be easy to use it and change the filters. Very disappointed, 9 months later, I cannot find any replacement filter. The machine is not usable any more. Don’t recommend Read more

Missing soft brush as mentioned in the demo 😰 Read more