Blueair

Pure 511i Max

Blueair Pure 511i Max

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Overall

#195 in

Air Purifiers

according to Reddit Icon Reddit

Sentiment score71% positive
5
1
1

Top Pros

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Last updated: Apr 28, 2026

Reddit Reviews

Reddit IconBonusAdventurous9162
6 months ago

I have a Blueair 511i max for my room which is 11ftlong and about 7ft tall and about 7ft wider does a decent job but I still get back I got for my stuffy nose and the dust which is does quite good at reducing the dust but my nose still feels horrible any suggestions I usually run it on 2-3 speed

Reddit Iconcommonwoodnymph
2 months ago

If you haven’t tried them, the stainless steel litter boxes really helped the odor problem in our situation. I also use in conjunction with the blue air 511max in a small bedroom.

Reddit IconCreative-Sky237
2 months ago

I just bought a blueair 511i Max because it's supposed to be the quietest and I'm underwhelmed. I bought it for a small living room to keep the air fresh and it seems to create a dusty odor instead? There's also an audible machine whir even on the lowest setting. I'm considering sending it back and trying the Levoit Vital 100 or the Core 300-P instead. I prefer the size/shape of the Core 300-P, but reviews suggest the vital is better with odors. Since you have both, could you speak to the difference in terms of sound and odor control?

Reddit Iconjcnlb
4 months ago

So I got my blue air 511i max and there was no smell. Air smells so clean and fresh to me. I hate chemical smells and this didn’t have any. I bought three so I can have one in every room. One arrived damaged but I’m exchanging. The other two are great and I love them so much.

Reddit IconRaptor07
4 months ago

We have 2 BlueAir 211i Max for our living room and upstairs and a 511i Max and humidifier for our kids room. I'm in Salt Lake City, UT where we get heavy pollution in the winter inversions and occasional forest fire smoke in the summer. These purifies make easy work of keeping the air clean and work perfectly with HA. They also have a nice look to them so they aren't as much of an eye sore.

Reddit IconTravishamockry
4 months ago

Seconding this. I have two Blueairs too. I have a 511i Max also for my bedroom and the new Signature for the living room. Works well and good stats in HA, which is all I really wanted.

Reddit IconCmee4svc
Reddit IconDull_Apple1455
8 months ago

Unfortunatly, i had at Blueair 411 formabout 5 years in the bedroom. It just stopped working. So I replaced it with the newer 511

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