Customer reviews from www.blueair.com
Blueair - Genuine Replacement Filter for Blue Pure 511i Max Air Purifier - White
Average customer rating
5
(25 Reviews)
Rating breakdown 25 reviews
5 Stars
25
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
100%of customers recommend this product.
(
23 out of
23)
Customer Reviews for Blueair - Genuine Replacement Filter for Blue Pure 511i Max Air Purifier - White
Customer Rating
5
Carbon Filter
on December 17, 2025
Posted by: J S.
from US, United States
These fit perfectly, I wouldn't use the off-brands after reading reviews about the odd shaping. I also could tell a big difference once using the replacement filter and running the system overnight. It really helps in removing nuisance odors like smoke from a different unit in my building!
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Customer Rating
5
Doing great on burnt bacon odor
on January 16, 2026
Posted by: Ken L. K. L.
from US, United States
Even though we have an overhead vent above our stove I often stink up the house when I'm cooking. The Blue Pure unit does a good job removing the smell. It's easy to tell with the color coded air quality indicator. The app is nice for keeping track of the filter 'health'. We still have quite a while before a new filter will be needed. I was concerned about having to replace it too often but that doesn't look like an issue.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Customer Rating
5
My BlueAir
on February 8, 2026
Posted by: Bill L.
from US, United States
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.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Customer Rating
5
Clean, Clean Air
on February 15, 2026
Posted by: Margaret C.
from US, United States
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’.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Customer Rating
5
Perfect :)
on February 18, 2026
Posted by: Jacqueline R. R.
from US, United States
I’m so happy in general with our air purifiers! Thank you
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Customer Rating
5
Love my Pure Blue
on February 26, 2026
Posted by: Timothy M.
from US, United States
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.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Customer Rating
5
Better than expected
on March 2, 2026
Posted by: Mary B.
from US, United States
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.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Customer Rating
5
511i air purifier
on March 6, 2026
Posted by: Helesia W.
from US, United States
I love my blue air purifier. It helps with dust, smells, and more!
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com