Genuine HEPASilent Replacement Filter for Blue 411/3210 Air Purifier – Removes 99.97% of Pollen, Dust, Pet Dander, Mould, Bacteria & Viruses Activated Carbon Reduces VOCs, Odours, Chemicals

Seems to do the job. Installed easily and the machine works great!

Very efficient filter that lasts up to a year in my machine. No odour from it even when it's new. I buy the genuine one rather than the slightly cheaper knock offs so I know I'm getting quality.

Quality product and very effective

Fiddly to fit but works well when on!!

Genuine blue air filter I have bought both genuine and nod other makes. But prefer genuine blue air, as I think they work better and last for longer.

We got far more use out of the original filters which came with the air purifiers than expected when we originally bought two of them. The replacement filters have proved to be money well spent and will give us benefits for a long time. Replacing the filters is a quick, clean and simple task taking less than a minute for each purifier. I did not get covered in fluff or dust when I changed the filters, so there seems to be no reason to fear getting dirty replacing them. Would I change the filters again if the purifier was still effective? Yes, I would.

Very good, easy installation 😀

OK, it's pricy. But it is the main component of the Air purifier so it shouldn't come as a surprise. It looks well made and there's certainly more to it than a tube of paper. It fits the Blu Air purifier perfectly, is very easy to change over the old filter to the new one, and I can safely say there is plenty of evidence that larger particles of dust etc are filtered out going by the colour of the 6 month old filter I just replaced! Photographs attached, from different angles so you can see it isn't just shadow or light direction. I have two of the Blu Air filters running in my home and the air feels and smells much fresher since I got them. I usually run on lowest setting which is virtually silent but increase if any odours I want to shift (get cigarette smoke coming through from neighbouring flats). Comes in simple cardboard box, no excess packaging.