Blueair

Blue 211+ Auto

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Blueair Blue 211+ Auto

Overall

#146 in

Air Purifiers

according to Reddit Icon Reddit

User sentiment69% positive
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Top Pros

Top Cons

Last updated: Apr 6, 2026

Reddit Reviews

Reddit Iconbillythygoat 1.0
r/smarthomeAnyone have a air purifier?
about 1 month ago

I have a blue air one and it’s dumb but you can put it on a smart outlet because it remembers the previous settings.

Reddit Iconleaflame 0.5
r/bernesemountaindogsAnyone use air purifiers?
10 months ago

We have 3 air purifiers (one in the main space, one in my bedroom, one in the basement)- necessary when you have a Berner and 6 cats lol. The big main spaces ones are blueair blue 211+s- they're amazing, the covers are machine washable and they're super quiet. My room one is just a little one from ikea lol- also works great, but is definitely for a small room only.

Reddit IconSafe-Bee-2555 0.5
r/vancouverWhat air purifiers are best for forest fire smoke? In a 400sq ft room?
7 months ago

I use a blue air 211+ filter and love it. For some reason it also feels like the air cools down, but I know that's just because it's moving the air around the room. I've had mine for 4 years now? Replacement filters are a bit pricey, but it really helps the air in the old building I live in.

Reddit IconBlowingleaves17 0.5
r/AirPurifiersFound a blue air Classic 500/600
7 months ago

I have one and think it is worth $50. I got it at Blueair and it was on sale for $300 or so off. It's a very expensive air purifier and three filters are need. If you want odor control, too, you must get the [Classic 500/600 Series DualProtection Filter](https://www.blueair.com/products/500-600-series-dualprotection), as opposed to the filters that just clean the room. They range from $120-150 for three, depending on where you buy them online. The Blueair website even has a subscription plan where you get a discount for subscribing. I'm using it in a foyer which is connected to a living room and dining room, and it works fine. The foyer is right off the breakfast nook and kitchen, and it does an excellent job eliminating cooking smells that drift into the foyer and can travel upstairs. The first two speeds are quiet, but the third highest speed is very, very loud. I also have the Blueair 211+ and 211 Auto in other rooms and really like them, too. If I need air purifiers in the future, I will always buy Blueair.

r/AirPurifiersAir purifier for 300 sq. foot room, that can purposely make some noise?
10 months ago

I have the Blueair 211 and Classic 605. Both are great air purifiers and make great noise on high, but they appear to be older models, so may not be easy to find. If you end up buying an air purifier that is too quiet, consider also getting LectroFan Classic White Noise Machine. It has lots of fan sound choices and is the only sound machine I have ever used that is loud enough for me.

Reddit IconBruhBacon 0.5
r/AirPurifiersBedroom Air Purifier with Wifi under $250
3 months ago

If you're looking at the Winix C610, you could also look at the T810 which has higher CADR and right now is going for cheaper ($185 on Amazon). Very similar looking models. Technically it would be "overpowered" but that just means it'll perform better at lower air speeds, which means you could operate it quieter than others. I know a lot of people really like the Blueair 211 and it's very popular. I'm personally not a big fan of the pre-filter and I found the fan noise of a different Blueair model to sound more high-pitched. Minor complaints and very much personal preference.

Reddit IconD3skL4mp 0.5
r/BuyItForLifeThe REAL best air purifier - I HATE DUST!
12 months ago

You’ll typically see the same top-rated models across Wirecutter, Consumer Reports, and Tech Gear Lab: the BlueAir Blue Pure 311i+ Max, Coway Airmega 1512HH, and Winix 5500. The best choice probably depends on the size of the space you’re trying to cover. For my downstairs rooms, I went with two BlueAir units (the 311 and 211 models). BlueAir offers a 25% discount for teachers, military, police, and possibly firefighters (can’t recall for sure), available in both the U.S. and Canada. They also offer a 15% discount on filter replacements if you sign up for a 6-, 9-, or 12-month subscription. For my upstairs office/bedroom—since it’s a smaller space—I went with the Coway Airmega 1512HH and have been happy with it.

Reddit IconDull_Apple1455 0.5
r/BuyItForLifeLooking for a high-quality air purifier that's built to last.
8 months ago

Well the larger 211 is still trucking after these years so that is why is just repurchased the improved model.

Reddit IconLong_Zookeepergame25 0.5
r/AirPurifiersBlue Air 511 - Buyers Regret
12 months ago

BlueAir not having true HEPA and just a HEPA-type filter is fine. Multiple official testing sources show them pushing benchmarks similar to other true hepa rated units by popular brands. They still pull dust and still filter air just fine. They do have an ionizer and do produce extremely minuscule amounts of ozone. That’s why they’re certified. However, they are (especially the 511) weak units with a low CADR. If you want better performance, definitely return for a different unit or a stronger BlueAir model like the 211

Reddit IconMaximumCurrent2265 0.5
r/BuyItForLifeThe Best Air Purifier for Home now? Have you noticed a huge difference since you started using them?
5 months ago

I am a Blueair girly for 5 years now. I purchased mine due to days of research and consumer reports back in 2020. I keep mine on high since it is a nice white noise sound for my dogs (otherwise they bark at any little noise at night). The high setting is also where you find most of the benefits of cleaning the air in the room. If I do not have mine on, I can smell my dogs and everything feels dirty. I have two 211+ models.

Reddit Iconpumpinnstretchin 0.5
r/BuyItForLifebest air purifier for apartment, bad allergies
17 days ago

I have horrible sinuses. Over the years, I've used a bunch of different kinds of air purifiers. The ones that I've used for the past 8 or 9 years have been BlueAir. I've used their 211 and 411 models 24/7. They're both quiet, don't use a lot of energy, and have lasted with no problems over that time. The main reason that I like them is that they're easy to clean. A dirty air purifier doesn't do anybody any good. All high quality air purifiers have a pre-filter that collects the larger dust particles. The HEPA filter collects the microscopic stuff. To clean the pre-filter on most of them requires disassembling the unit and struggling with a mesh or fabric filter that's usually glued onto a plastic frame. It's not quick and it's not easy. The BlueAir models have what looks like an ornamental fabric cover on the lower part of the outside. That's actually the pre-filter. To clean it, you slide it off exactly the way that you slide off a sock, and then throw it in the wash. It goes back on the same way that you slide on a sock. It's a brilliant, extremely effective design.