Blueair Blue Pure 511i Max Particle and Carbon Replacement Filter
$29.99
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- $33.99 - $64.99Lower price on select items4.7 out of 5 stars with 208 ratings
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Guests are saying
This air purifier is highly praised for its quiet operation, making it ideal for bedrooms and other living spaces. Guests appreciate its easy setup, effective air purification, and the convenience of app control for additional settings. The noticeable improvement in air quality and the ease of filter replacement further enhance its appeal. Many guests report better sleep and breathing, making it a valuable addition to their homes.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.8 out of 5 stars with 60 reviews
5 out of 5 stars
2 June, 2026
originally posted on blueair.com
Cleans and deodorizes air
My 511 is a blessing! I have two small room units and both do quite well in. Euyralizing odors of all kinds in the two rooms they occupy.
5 out of 5 stars
29 May, 2026
originally posted on blueair.com
Great filter
Old filter was in need of a change. New one came in and now my space is in excellent air conditioning.
5 out of 5 stars
27 May, 2026
originally posted on blueair.com
Solid solid product
This Blue 511i max is pretty awesome very impressed with system and filter life is incredible
5 out of 5 stars
12 May, 2026
originally posted on blueair.com
Fresh air
The air in my home is much improved and much less dust. My nose hasn’t been running like it did before I got this air filter. I’m very happy.
5 out of 5 stars
11 May, 2026
originally posted on blueair.com
Fast and Quite....
Hardly tell it is running, and cleans air like a champ...
5 out of 5 stars
5 May, 2026
originally posted on blueair.com
Review
I've loved my Blue Pure 511i Max since receiving it. I also bought a bunch more for family members. They all tell me it makes a big difference. Thank you!!
5 out of 5 stars
4 May, 2026
originally posted on blueair.com
Feeling better
Sneezing has stopped and so has my constant runny nose. My red itchy eye has lessened.
5 out of 5 stars
30 April, 2026
originally posted on blueair.com
Outstanding air quality
My granddaughter couldn't come to my house without having sneezing fits. After BlueAir she spends the night and has no issues. It's so worth it.
5 out of 5 stars
27 April, 2026
originally posted on blueair.com
No more cat box smell.
We bought this to try to help with the smell of the catbox. It sits on top of the crate that it’s in. I still clean it every day but now nothing nasty hangs around. It’s like we don’t even have a cat. We’re very happy.
5 out of 5 stars
22 April, 2026
originally posted on blueair.com
Blue Pure 511i Max
Excellent Product and very quiet. Very nice for a bedroom. Easy to replace filter.
5 out of 5 stars
27 March, 2026
originally posted on blueair.com
Blueair 511i Max Purifier
This air purifier works well. It has very easy setup and is extremely quiet. I have used it exclusively on the Auto setting, so it increases air purification as needed; otherwise it runs on very low fan speed, which conserves energy. It is very nice that it can be controlled via WiFi connection to the app. The app affords even more settings to control the air purifier than just the buttons on the unit, which I find useful. This air purifier is definitely a quality device.
5 out of 5 stars
19 March, 2026
originally posted on blueair.com
LET SLEEPING DOG LIE
ME AND MY CORGI DOG SEEM TO BE SLEEPING BETTER AND BREATHING BETTER IN THE MORNING. WHAT A BLESSING. SO QUIET AND SO FAR SO GOOD.
5 out of 5 stars
13 March, 2026
originally posted on blueair.com
Right size for the bedroom
It’s quiet, especially on night setting. I like that lights can be dimmed. Works well.
5 out of 5 stars
7 March, 2026
originally posted on blueair.com
511i air purifier
I love my blue air purifier. It helps with dust, smells, and more!
5 out of 5 stars
2 March, 2026
originally posted on blueair.com
Better than expected
We didn't expect our filters to get as dirty as they did in 6 months, but have decided now we will be checking them in 3 months to decide how often we need to replace the filters.
5 out of 5 stars
26 February, 2026
originally posted on blueair.com
Love my Pure Blue
I have a Pure Blue 511i Max and I use it in our master bedroom. We do not have a HVAC return in that room so it keeps the air clean.
5 out of 5 stars
18 February, 2026
originally posted on blueair.com
Perfect :)
I’m so happy in general with our air purifiers! Thank you
5 out of 5 stars
15 February, 2026
originally posted on blueair.com
Clean, Clean Air
Easy to replace old filter with a new one...and the change in air quality is noticeable. I use my purifier in a bedroom 13’ 6” by about 20’.
5 out of 5 stars
8 February, 2026
originally posted on blueair.com
My BlueAir
I like the units (3: 511 and 311 models)). They are quiet. Not sure how well they clean the air because when originally turned on all said the units were in air less than 2.5 micro. However, on one occasion in the couple of months owned smoke from my pellet grill entered the house and the amber-reddish light came on and the fan speed increased. After about 30 minutes it went back to clean air.
5 out of 5 stars
24 January, 2026
originally posted on blueair.com
Dust Sucker
Our air purifier in the laundry room near the kitty litter pan is kicking up the air purification to a level I didn’t know existed. When you see some dust, you think ... it’s got to be filtering some out, but once I cleaned the filter and saw the extent of dust and mini debris on the cloth outer shell, I was very surprised and impressed.