BLUEAIR Genuine Classic 400 Series Air Purifier Particle Replacement Filter

I hate paying so much for a filter as we have 3 of these units BUT I think it’s worth it to buy the genuine model. I’ve tried a couple of different knock-off brands and I just don’t think they work as well as they seem to mess up the auto function. One of my units continuously kept going back and forth between settings 2 & 3 and the only way to stop this was to turn off auto. This has not happened with the Blueair filter. When changing the knock-offs they also don’t seem to be as dirty as the Blueair brand for some reason plus the Blueair seems to slide in and fit better and are easier to remove. I'm not a germophobe or fanatic but my air just seems fresher. These new ones I just purchased have different instructions on the sides. Instead of saying “This side must face back or front” there’s just a sticker with an arrow indicating AIR FLOW DIRECTION. I pulled this sticker back and sure enough it covered the original side placement instructions. I’m really not sure if this is really clearer as it was a little confusing to me. However, looks like the metal side goes facing the intake and the corrugated side faces the control side. Seems to be working great and I think I’ll stick with the Blueair from now on. Don’t be alarmed by the slight oil odor when you first install as it seems to dissipate very quickly.

I have had allergies for years, shots on two arms every spring. And after years of suffering, my brother told me about Bluair and I got it. This thing is short of miracle. The Bluair series is great. It filters air, odors etc. And from the time I have gotten the Bluair and the filter, I have had limited or no pollen issues. It sucks the air and filters air so well. The filter is by other comparative standards, on the expensive side, but it really lasts. And you can see how black it gets. One filter lasted more than 6 months plus longer. But for health, reducing my allergies, removing odors...can't beat it. I love this thing. It is by far the best investment I made. No complaints.

Have been using our Blueair 400 Series Air Filter for years. The unit and replacement filters are both very high quality. Used in the bedroom to facilitate clean air for better sleep. Change the element every 6 months. Between filter changes, every 3 months I take the unit and filter outside and use my air blaster to thoroughly clean the unit and the filter. For proper contact seal, must be very accurate with filter alignment when inserting the element. I recommend Blueair products.

Blueair recommends changing the filters for their air purifiers every six months. The entire system is not inexpensive because the purifier is expensive and the replacement filters seem relatively expensive. However, the performance is valuable for anyone with allergies. By the time my filters are changed, there is noticeable build-up of particles so I know that this is something that we would be breathing in if not for the purifier. When I think about what our purifier does, running 24 hours a day, 7 days a week, for 365 days a year, I am appreciative for our cleaner air and decreases allergy reactions. The cost of the filter, changed twice a year, is approximately $0.45/day. For me, and my family, this is a good deal!

The BLUEAIR Classic 400 Series Genuine Particle Replacement Filter stands as a testament to the enduring quality and efficiency that the brand is known for. It's a classic choice for those who own compatible models, delivering effective air purification that users have come to expect from BLUEAIR. However, it's worth noting that these filters come at a higher price compared to the newer generation filters available in the market. This cost factor is something to consider, especially for regular users who require frequent replacements. While the performance is top-notch, the price point is a significant factor, especially when newer, more affordable options are available.

I get this replacement filter every 6 months for my Blueair 402 model. It has changed slightly over the years (I have owned the 402 for about 8 years already), but it is still the same great quality, and super easy to change out. Open the side door, pull out the old filter, vacuum the inside of accumulated dust, slide the new filter in. Voila! Clean air for another 6 months! It smells a little bit funny when you first insert a new filter, but just turn the cleaner on high and let it go for a couple of hours. The smell dissipates quickly. As an allergy sufferer and multiple cat owner, the Blueair is a necessity for the bedroom. Silent, clean air.

great item. Have four in my house, nobody is stuffed up. works sooo well

I installed this filter in our BlueAir 403 in just two minutes. After removing the old filter and vacuuming out the interior per instructions I slid this new filter in the slot, aligning the arrows as directed. It is a snug, perfect fit which allows for maximum filter efficiency. Although not inexpensive, this filter, and the system in total has vastly improved the air quality in our bedroom. The plastic-wrapped filter was packaged in a rigid cardboard box which was then placed in a large shipping box; there was not a wrinkle in it. BlueAir filters are advertised to be environmentally friendly, decomposing into carbon dioxide and water which was a plus.

Good quality

The Blueair filters are hospital grade filters that remove particulate down to about 1 micron. The filter with charcoal filters out unhealthy gasses. The Swedish designed Blueair Filter Units are excellent quality with noise levels below ambient bedtime levels (about 30 dbA)

Sold me a filter that was already written down as defective, and returned by a previous buyer. They even wrote the dates when it was bought and returned. I tried it and the smell was horrible, like a car that was leaking gasoline and oil Who sells someone something that’s already defective.

The best air purifier brand in the market. I have been using Blue Air Air cleaners for over 8 years. Eliminates dust, pollen or even food smell. Sneezing, hay fever and itchiness are gone as well, and my eyelid doesn't feel heavy. I am extremely tidy, but London's air quality is terrible. I would not recommend any other brand than Blue AIr. The filter is heavy on price but your lungs are worth more than that.

手ごろな価格でよかったです