Blueair Pure 211i Max 100 - 120V PAC Filter Fog
$349.99
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$43.99 - $53.99
reg $73.32 - $98.32 Sale
3 out of 5 stars with 2 ratings
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4.7 out of 5 stars with 477 reviews
quality: 4.11 out of 5
value: 4.11 out of 5
75% would recommend
8 recommendations
5 out of 5 stars
27 March, 2026
originally posted on blueair.com
Blueair 211ii Max Air Purifier
This air purifier as worked very well from the start. I've been using it for several weeks. It has already greatly reduced the amount of dust on the furniture! I run it on the Auto setting and it promptly responds to any kitchen-generated odors from cooking. The unit can be controlled from the app via WiFi which I find useful; with additional control of it compared to using just the buttons of the top of the purifier. However, you can use the air purifier just fine without using the app. It is very quiet and does not affect my ability to satisfactorily hear the TV. The overall design is clean, modern and unobtrusive. It is a quality device and I highly recommend it.
1 out of 5 stars
Thumbs down graphic, would not recommend
25 March, 2026Verified purchase
So disappointed and surprised due to brand
6 mos after purchase I changed the filter which I orders direct from Co. and slowly began noticing a weird smell so of course I searched every inch of the room before I stuck my nose over the purifier. This is a known issue with the filters because of the glue and other chemicals to make the filter. So my room was worse off with this than without for 2 weeks as that’s how long it took to smell like something wrong. Bought the larger one 311 and the motor died same time 6 months. Did all troubleshooting steps. It rattles loud upon turning on so something is wrong with quality control. Even when the repair or replace I have to buy more air purifiers until this process is complete due to severe medical need.
1 out of 5 stars
20 March, 2026
originally posted on blueair.com
One is great, the other sounds like a dying motor inn ac unit.
As far as app and purification, they seem great. One of has a soothing sound through all speeds. The other sounds like a bearing is bad. Will update with resolution.
2 out of 5 stars
15 March, 2026
originally posted on blueair.com
Disappointed
Not sure it's working, blue light comes on from day one, excellent air? Sprayed perfume, light doesn't change. Display went from 0 to 2 for about a minute. I can't say if it doesn't work or not
5 out of 5 stars
11 March, 2026
originally posted on blueair.com
Blue Purr 211i Max
Great Unit thus far. Have only used it one week. It cleans the air effectively in a large open 2 floors high and wide open to breakfast nook. It runs on a timer from 7am to 10 pm.
5 out of 5 stars
7 March, 2026
originally posted on blueair.com
Helped my cat with asthma
Arrived quickly and seems to be making a big difference in keeping the air clean for my cat with asthma.
5 out of 5 stars
24 January, 2026
originally posted on blueair.com
Need Better Operating Instructions
The directions in the "Getting Started" pamphlet are brief and confusing. What's the point of the Toggle? What's the suggested setting if I use the Toggle? The Night mode seems to shut everything off; is it supposed to do this? The Auto mode causes the system to continually cycle from low to high fan settings. If I run it this way all night the changing fan speeds keep me awake. It seems to work best when I set the fan to Speed 3 and leave it on all night.
5 out of 5 stars
21 January, 2026
originally posted on blueair.com
Very quiet compared to Shark
This is very nice so far. Hopefully it lasts more than a few months unlike my Shark. This cleans the air quick! I have had it for a week or so now and my nose is not stuffy anymore! Also, all other air purifiers must make a very high pitch noise that scares my dogs- as soon as I replaced my Shark with Blue- my dogs stopped shaking and pacing around! LOVE IT- so far.
5 out of 5 stars
8 January, 2026
originally posted on blueair.com
Excellent Unit
There is a lot less dust on my furniture since I purchased and plugged this in. I keep it on auto 24/7 as recommended and I cannot hear the fan at all, very quiet The only time I heard the fan so far was when I was cooking and it picked up on the particles in the air, the fan increased and it showed the increase in particle count on the display, and the unit is clear across the room from the stove. This is a quality unit at a good price I am well pleased.
5 out of 5 stars
5 January, 2026
originally posted on blueair.com
2nd 211i
This is the 2nd 211i I’ve ordered. I thought I’d have to put it in the back of the house for silence, but it is so quiet that I have it right in the living room with the TV and in the center of conversation. I love BLUEAIR products.
1 out of 5 stars
2 January, 2026
originally posted on blueair.com
Where's my refund?
We operated the blueair but it only registered 0 particles except one time when cooking, then it registered 30 particles. I mailed it back with a provided label and am waiting for my refund.
5 out of 5 stars
1 January, 2026
originally posted on blueair.com
Nice Air Filtration
Works great! The automatic mode on this is awesome!
3 out of 5 stars
30 December, 2025
originally posted on blueair.com
New customer
I installed my new 211i Max yesterday in my small cottage. I disengaged the wifi feature and set the unit to Auto. It has run on lowests fan speed and the display has continued to show a 0 for the particle count. This morning I moved the unit to the bedroom, closed the door and ran the fan on high speed for an hour. Again the particle count showed 0. I am surprised that 1. the fan speed has not increased and 2. the particle count is 0. It is hard to tell if this is actually working, this seems to tell me that there is no dust in my cottage, dust is why I bought this unit. I did vacuumn the area where the sensors are although the unit is new so this should not be an issue Hopefully Blue Air can explain this here on this forum. Do I have to engage the wifi feature for the unit to work properly? I cannot rate this properly until I use it for a while. Thank you!
5 out of 5 stars
Thumbs up graphic, would recommend
23 December, 2025Verified purchase
(no review title)
Great
5 out of 5 stars
18 December, 2025
originally posted on blueair.com
Second one
Got this because our old one died after three years of use. We hope it lasts longer! Out of the box it’s working fine.
5 out of 5 stars
14 December, 2025
originally posted on blueair.com
Easy set up
Immediate results. Mandatory for homes with a wood stove or fireplace.
5 out of 5 stars
11 December, 2025
originally posted on blueair.com
Thumbs up
Appears to be working great will know better after long term us.
4 out of 5 stars
11 December, 2025
originally posted on blueair.com
So far, so good
I've only had it operating for a short while, but it:-was packaged well-is quiet-is super easy to set up/run-very quick reaction to particulatesI have no idea how accurate the display is, nor how effective the filtration is yet (hence 4 stars), but I do notice a difference.
5 out of 5 stars
10 December, 2025Verified purchase
(no review title)
Works really well!
5 out of 5 stars
9 December, 2025
originally posted on blueair.com
My second 211iMax
We purchased and used our first 211iMax a few years ago and decided to purchase a second one for our lower level family room where we have a wood burning stove.