Customer reviews from www.blueair.com
Blueair - Genuine 511i Max Replacement Filter for 511i Max AHAM Certified HEPASilent 99.97% particles, odors Carbon Filter - White
Average customer rating
5
(40 Reviews)
Rating breakdown 40 reviews
5 Stars
39
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
0
100%of customers recommend this product.
(
38 out of
38)
Customer Reviews for Blueair - Genuine 511i Max Replacement Filter for 511i Max AHAM Certified HEPASilent 99.97% particles, odors Carbon Filter - White
Customer Rating
5
Right size for the bedroom
on March 12, 2026
Posted by: KENNETH M.
from US, United States
It’s quiet, especially on night setting. I like that lights can be dimmed. Works well.
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
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
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
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
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
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
Dust Sucker
on January 24, 2026
Posted by: Richard B.
from US, United States
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.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com