BLUEAIR Genuine Blue Pure 511 Replacement Filter for 511 Pure Air Purifiers - AHAM Certified, HEPASilent Dual Filtration, Removes 99.97% of Particles & Odors, Genuine Carbon Filter

This filter is worth the money I paid for. It works great and definitely removes any orders. I have it in my bedroom and the room is not so small, but yet it gets the job done. The Air Purifier is so quiet.

Easy to assemble. Quiet operation. Good filtration.

Not sure if it is working for me, but wake up less congested :). Using in our bedroom. VERY quiet. Good product.

Easy to install. I recommend them highly

I change my filters every 6 months. I prefer using the Blueair genuine filters. They always work well. They always fit just right and always work as intended.

I buy these and re-buy them regularly.

Works well. Easy to set up and use. Small enough to be unobtrusive.

This is great. It fits my BLUEAIR filter perfectly. It lasts about six months.

I bought it during the wildfire season when the air quality was extremely poor, and I could feel a real difference the moment I walked back into the room. The air felt cleaner, lighter, and much more breathable it made the space noticeably more comfortable. Performance‑wise, it does exactly what you want an air purifier to do. It runs efficiently, handles heavy pollution well, and works quietly in the background. The only downside: the buttons on top are pretty basic. They work fine, but they’re not very modern or “techy.” Aside from that, I absolutely love it. It looks great in the bedroom and blends in nicely with the decor. Highly recommend if you want strong performance and cleaner air, especially during smoky or polluted days.

Nothing bad to say

Does what it needs to do. As a genuine product, it fits well in the air purifier.

Used before

.....when you walk through the air cleaner isles of the major supply stores....out jumps the same old same old Brands.....you may have tried many of them as I have.....Blue Air made in Sweden has helped me breathe well in times of smoke from forest fires....dusty winds entering through windows....normal household living...inadequate air cleaning done by your furnace etc.... ....I have 3 different models....small room.....medium square footage to large square footage....when you remove the outer fabric...and wash the pre-filter as instructed....change your inner filter as indicated by the units warning light....get ready for having these units around for a long time... ...quite is the big sell....don’t go with a small unit if you want your bedroom to have the ultimate good air....big mistake as a small unit on low just doesn’t make sense....medium sized or larger on low is silent but it moves more air..... .....the big sell is the units fan head on top the unit....years of use on my units....clean as a whistle to date...why...nothing gets through...other named Brand units get filthy after 6 months ....BLUE AIR simply the best....Tina Turner