This is a review after three months use of this air-purifier. When it was first out of the box and set up it seemed to make an instant difference - or atleast the fresh, clean smell from the activated charcoal component of the filter certainly gives that impression on first use. What this small unit is up against: Neighbours who chain-smoke 24/7 (As a neighbour, when you smoke in "your" home you also smoke in "mine" because smoke spreads out and diffuses into everything nearby - even through small cracks in closed and doubled-glazed windows - if you smoke please consider your poor neighbours who may actually be suffering terribly), mould and microbes from neighbours whose place leaks into mine, other nasty air pollutants, road fumes, occasional cooking, dust, ect. The first thing to realise is that this unit can only really cover a small area - maybe a small to medium-sized room, so a home-wide air pollution problem is beyond it's capacity. And as far as the size of each air-pollutant particle - some are simply too small for it to capture (I have previously used an ionizing air-purifier that is more effective overall as it claims to be able to capture air-pollution particles down to a smaller size through the air-ionizing part - but the amount however little, of ozone that it produced was enough to trigger airway inflammation and asthma, so unfortunately that model self-excluded itself). PROS It's small and lightweight and doesn't take up too much space - the size and shape of something like a small waste-paper basket. It's controls are very simple and intuitive and very responsive to simply touching your finger to the control-face. It's not too expensive (as long as it remains reasonably priced it's worth it). It's quite quiet - but if you like absolute silence then it may distract you at full setting, on the other hand if you have noisy neighbours it may help to distract a little. I found it okay. It seems to do something, which in a badly air-polluted home is still a help. It has a blue night-light that has three settings: bright, dim, and off. You can also switch off all of the function lights (if you need absolute darkness in the room), by simply pressing and holding the light-bulb button for three seconds, and then simply tap the light-bulb button to switch them back on if you want. CONS Although it's not too expensive it's still money and costs quite a lot. The principle cost will be - as with all air purifiers - the replacement filters, and if the price climbs much then it doesn't become worth it, so it's price can easily make or break the deal. The filters appear to lose their effectiveness in about a month here. I felt that at some point it wasn't helping at all and maybe even adding to the problems due to the filter being "full" and I imagined that being saturated past a certain amount it might even harbour mould or something (but this thought would be true of all filters and makes and models that I know of), and although I ran it for about 77 days, I think that it was doing at least something worthwhile for only about a month, this could possibly be stretched to six weeks but that would really be it - after that the filter needs changing, at least I found it so *see attached photos where I compare the filter used for 77 days to a brand new one unpacked and ready to go, also note that the outer filter (not pictured) was removed and washed and dried several times over that time as dust built up on it's surface turning it from black to grey* Also the seal on the "old" filter seemed to shrink or something as I noticed a little gap between the outermost edge of the filter (which is ringed by some foam material to provide a snug-fit) and the inside-edge of the unit itself - I noticed it because of how snugly the new filter fit in as compared to how more easily the old filter came out - so perhaps the foam edge ringing the filters may shrink over time during use? I sometimes noticed dust build-up all around it even when left on the top setting. However, I do not remember if this was also true before the month or six week mark. It only covers a small area and it's air-flow is not very powerful. Overall this unit started out struggling valiantly but relatively soon became overwhelmed. I have been unsure if I would purchase this again, but at this time I think that I would, but only just. Ideally I would have two or maybe even three spread out and change the filters about every month. This does quickly become an expensive prospect so there's always that to think about as the bottom line.
