Blueair - Pure 411i Max
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Based on 1 year's data from Feb 24, 2026 How it works
Liked most:
15
0
"it’s majorly helped w allergies and dog smell"
"it's fantastic in keeping the farm smell to a minimum."
"has substantially lessened my seasonal allergy symptoms while in the house"
5
0
"They're incredible and the best thing is that they have this washable cloth sleeve (pre filter) that goes over the entire intake which happens to wrap all the way around. ... It does such a good job that the actual internal filter stays significantly cleaner and doesn't need to be cleaned or changed as often. ... It's a game changer."
"external filter ... external prefilter cleaning by vacuuming and/or washing makes them last way longer."
"Blueair imo because they have washable prefilters, and pet hair and dander is large and honestly doesn't need HEPA filters to clear it out the way, say, smoke does."
5
1
"They are all basically noiseless. ... They're sooooo silent. ... The only time it runs is when we cook or something or I light a black wick and it turns on"
"Our favorite is the BlueAir in our bedroom - we keep it on auto mode 24/7. It’s super quiet and seems to work well."
"Love how angry my BlueAir gets when I saute onions. The happy blue light turns red and it cranks right up."
11
0
"the only ones whose fans have stayed smooth and quiet. ... i have owned 8 over 5-6 years at least without one single issue."
"They are all basically noiseless. ... They're sooooo silent. ... The only time it runs is when we cook or something or I light a black wick and it turns on"
"the BlueAirs are the only ones whose fans have stayed smooth and quiet."
8
2
"have had mine for years and run it 24x7"
"the only ones whose fans have stayed smooth and quiet. ... i have owned 8 over 5-6 years at least without one single issue."
"We have three 411s that are all 8 years old now and still going. ... So far no problems with any of them running all day every day."
Disliked most:
2
4
"OTOH, the two Blueair purifiers are on all the time and we have ***not*** noticed a decrease in the rate at which dust accumulates on the woodwork in the house."
"the auto setting barely did anything unless I literally blew smoke at them"
"Maalikabok pa rin kahit super sealed yung unit."
1
3
"the larger sizes have significantly more expensive filters"
"Those filters are crazy expensive, so that purchase turned into quite the "investment"."
"BlueAir is ok but the filters are small and replace more often."
0
2
"it has ‘electrostatic’ as well as HEPA-type filtration (they claim theirs is better). I understood electrostatic was the only thing that could actually clean the air like for gasses or VOCs, not just remove particles. Looking back and re-researching, it looks like anything electrostatic will produce at least some undectectable ozone. So, well I’ll-be-damn! I wanted to not have to worry about ozone!"
"I don’t like they have an ionizer that you can’t disable. ... Ionizers create ozone, and when ozone reacts with different molecules it creates all kinds of new compounds that can’t be predicted."
1
2
"Blue air is the best of the three, also isn’t HEPA but has a static generator which bothers some people."
"Although you'll find complaints it doesn't use a "real" HEPA filter"
"Blue air is the best of the three, also isn’t HEPA but has a static generator which bothers some people."
0
1
"the auto setting barely did anything unless I literally blew smoke at them"
"Their sensors suck"
brycemonang1221 0.4Levoit Core 300 or Blueair 411i. They're both super quiet, lights can be turned off, perfect for dust in a bedroom.
Levoit or Coway are the safe bets. True HEPA, actually quiet, filters aren’t stupid expensive, and people genuinely notice less dust/allergy symptoms. Dyson is overpriced for what it does, Blueair is good but filter costs add up. Size it properly for your room and run it 24/7 👌
Zame012 0.4I use Blueair 411i and Blueair 511. The only downside is they don’t have an activated carbon layer to remove VOC effectively but unless there’s a wildfire on the west coast (for us at least) there’s no real issue as we don’t smoke Edit: My apartment is also 1100sqft and the 411i covers the living room and kitchen and second bedroom. The 511 covers my bedroom and hallway
AntDogFan 0.2I also have two blue air 411 for each bedroom. Can't recommend them enough. They just do the job and filters are pretty cheap.
austinchan2 0.2I have a 411 and it died (wouldn’t run, connect to anything, blinking red light). Their customer support was very bad, multiple times just stopped responding to me until it was out of warranty. Because I had old case numbers they eventually admitted it was broken and reported within warranty and replaced it, but I wished I’d’ve got it from Costco so I could just return it there instead.
DollyDewlap 0.2Another vote for Blueair. I’ve had a 411 and two smaller ones running continuously for a few years now and they help with dust, dander, and lessening mildew. The app is pretty cool. The soft white noise is perfect for sleeping. Plus I run HVAC filtration every hour.
Dull_Apple1455 0.2Unfortunatly, i had at Blueair 411 formabout 5 years in the bedroom. It just stopped working. So I replaced it with the newer 511
GSDer_RIP_Good_Girl 0.2I use two different ones: Winx C545 (Costco) and Blueair 411 (Amazon). The latter one served as the forced-air exhaust on my old DIY litter box.
IamoneofScottsTots 0.2We have the 211 Max and we also have the classic 405. I have a tiny 411 in my office.
methnen 0.2Ah, that's too bad. We've got a bunch of 411s and they're all still going strong. They're fairly simple, which is I suspect also why they're relatively reliable. I wonder if it's repairable honestly. Like maybe something just came loose inside there. I actually couldn't remember exactly when I bought all of ours so I looked it up in my Amazon history. We have three 411s that are all 8 years old now and still going. We have two 211+ models and they're 7 years old. And then 3 411 Autos that are now 3 years old. So far no problems with any of them running all day every day.
savinliveshowboutU 0.2I have TERRIBLE allergies. My nose drips continuously. I have 3 BlueAir 211 (2800 sqft townhome; Bedroom, living room, kitchen) and one 411 (by my cat’s litter box) When I’m at home, I experienced zero allergy symptoms. As soon as I get my car and drive out of my garage , my nose starts running. Can’t speak highly enough about the BlueAir 211. I have to replace the filters ($74 each) every 4–5 months. Worth every penny.
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