Blueair Blue Pure 211i Max

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Overall

#23 in

Air Purifiers

according to Reddit Icon Reddit

Sentiment score86% positive
24
3
1

Top Pros

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Last updated: Jun 10, 2026

Reddit Reviews

Reddit Iconbertles86
12 months ago

Blueair.com, Swedish, excellent products.

Reddit Iconderausgewanderte
10 months ago

I also have two blue air purifiers for large rooms. 2 story house. Blue Pure 211i Max Some limited information through the HA integration. There purifiers were rated top at consumer reports and we are very happy with them. No more nasty dog smell in our bedroom.

Reddit Iconeastermonster
10 months ago

We love ours. I can spritz something like hair product or insect repellent in the next room and it will immediately kick on.

10 months ago

We have this one: https://www.blueair.com/products/blue-pure-211i-max

Reddit Iconepchilasi
9 months ago

I googled the tests CBC marketplace did on this quickly. The BlueAir **significantly** outperformed a single furnace filter (about 2.5x better) and all other tested brands. Single furnace filter was twice as effective as Dyson. [Source.](https://www.cbc.ca/news/business/portable-air-purifier-tests-marketplace-1.5900782) Furnace filter will probably work great. Don't waste money on a dyson. BlueAir is HQed in Sweden. It is owned by UniLever, which is HQed in the UK. So, BlueAir is at least not American.

9 months ago

Only some blue air models have ionizers. ~~Most/the most common ones do not.~~ The CADR for the 211i max (which I only pick because I have) does not have an ionizer and still rates ~4x a single Merv 11 filter on a box fan. I still think the Merv on a box fan is great. I only use BlueAir because I know it's effective while also being pretty. I also like the pre-filter for pet hair. Edit: I have learned that it apparently does have an ionizer, but, it's CARB compliant and has passed many other tests that certify it's not producing ozone in any amount that could possibly be dangerous. I think people just want to dunk on it (and use words like ionizing [which we should be concerned about] with no nuance) because they're expensive. But it still works very well and is safe.

Reddit IconFar_Resource_8965
7 months ago

Blue air. My wife suffers of airborne allergies, and these air purifiers practically eliminated her allergy episodes at home. We know they worked since a couple of times we have tried generic filter replacements and my wife allergies were back, but disappear again as soon as we bought the original brand name filter replacement.

7 months ago

We have the Blue pure 511 for our bedroom and the Blue pure 211i Max for of living room-kitchen (open concept).

Reddit Iconnotmytruth
3 months ago

We love our BlueAir filters. We have a 211i Max for our main floor (overkill) and a 411i max for our upstairs. Would recommend them to anyone!

Reddit IconOutrageous-Pie-7515
3 months ago

I second this. My blue runs 24-7. 2 years going strong.

Reddit IconRaptor07
6 months ago

We have 2 BlueAir 211i Max for our living room and upstairs and a 511i Max and humidifier for our kids room. I'm in Salt Lake City, UT where we get heavy pollution in the winter inversions and occasional forest fire smoke in the summer. These purifies make easy work of keeping the air clean and work perfectly with HA. They also have a nice look to them so they aren't as much of an eye sore.

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