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
(30 Reviews)
Rating breakdown 30 reviews
5 Stars
30
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
100%of customers recommend this product.
(
28 out of
28)
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
Blueair 511i Max Purifier
on March 26, 2026
Posted by: Mark A.
from US, United States
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.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Posted by: Siobhan Gormley
from Ottawa, Canada
Verified Purchase:Yes
Exactly what I needed for this device. Fit perfectly and the filter is working properly.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Posted by: Lorie
Verified Purchase:Yes
My husband was having trouble breathing due to COPD. This has helped him tremendously. When I replaced the filter I couldn't believe how dirty it was and will continue to use.
Written by a customer while visiting www.blueair.com
Posted by: Xavier
from Cincinnati, OH
Verified Purchase:Yes
Having the filters on a subscription plan keeps it simple for me. This way I don't miss changing the filter in a timely manner.
Written by a customer while visiting www.blueair.com
Posted by: Carri
from BC Carri
Gender:Female
Verified Purchase:Yes
Love this product. It works. Air is clean and fresh even after cooking.
I would recommend this to a friend!
Written by a customer while visiting www.blueair.com
Posted by: Anonymous
from Dover, DE
Gender:Male
Verified Purchase:Yes
Nice filters and easy to change. The app is very intuitive.
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
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