Blueair - Pure 411
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Reddit Reviews:
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Based on 1 year's data from Feb 7, 2026 How it works
Liked most:
276
92
"It’s is SO MUCH more quiet than the s7 it ramped up the suction power from 4000 to 19000 yet I can let it clean my office room while being in a call now."
"Extremely quiet compared to our last one to the point where we can have it running while my partner is in work meetings (besides emptying water and dust bin, but that is 10 seconds of loud x 2)."
"pads that lift on carpet so you can run it while the baby naps"
141
29
"They do a good job of removing smoke from the room."
"The thing I noticed most and love about is that I no longer have the smell of my upstairs neighbor cooking wafting in."
"The sensors are amazing. ... Yes whenever I cook or smoke they instantly kick on and work really well."
359
17
"I recently found out I have a bunch of allergies- including my dog, so I got these Winix units to try and help combat the allergies. ... Within about 45 minutes of running one in my living room, part of my nose that has been clogged for as long as I can remember opened up. I’m breathing better than I have in years."
"I can tell you they really work. I have a mold allergy, and mold is literally everywhere in outdoor or indoor air with spores just waiting to land in a suitable environment for growth, but I have no symptoms at home with my two small Winix."
"They are also great to have during annual west coast wild fire smoke season and keep particulates in the house undetectable even when it has been horrid outside."
344
68
"never deflates"
"Also pitched it on bare rock using rocks to hold the stakes on a decently breezy night and it was pretty bombproof."
"the nearly 8 yr old tent is still going strong (handed down to my sister)"
8
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."
"This helps catch a lot of big stuff and I change the inner filter only annually."
Disliked most:
30
42
"The air purifier is now unusable since I can’t replace the filter."
"the filters are expensive as shit"
"the filters are expensive as shit"
1
3
"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!"
"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."
5
2
"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."
"Maalikabok pa rin kahit super sealed yung unit."
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."
6
2
"I have a 411 and it died (wouldn’t run, connect to anything, blinking red light)."
"Unfortunatly, i had at Blueair 411 formabout 5 years in the bedroom. It just stopped working."
"Their customer support was very bad, multiple times just stopped responding to me until it was out of warranty."
I 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.
Another 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.
Unfortunatly, i had at Blueair 411 formabout 5 years in the bedroom. It just stopped working. So I replaced it with the newer 511
Ah, 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.
I also have always coveted the coway airmega, which has remained high in rankings (though can’t fully ‘trust’ any of them) but also above $200. How much are replacement filters? I bought my blueair 411 (not auto) 2019 for $100 and it remained high in all the rankings until 2022 when other stuff creeped up. My model remains less than $150 and Manufacturer’s replacement filters are $25 a piece but external prefilter cleaning by vacuuming and/or washing makes them last way longer. And they have prettier pre filters than the standard bright spandex ones that come w it. Does airmega have a ‘prefilter’?
I 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.
Plus one for this. I have two blue air 411s in bedrooms and they are very good and new filters aren’t too expensive either.
We have the 211 Max and we also have the classic 405. I have a tiny 411 in my office.
The only thing that will stop dust from your PC is you cleaning your PC and cleaning your house. Regularly. I have a 411 for over a year, and it's been fine. Edit for clarity
Blueair works okay. It’s expensive but does work. Coway is definitely more performance for the money though.
I live in Southern California, and the filters are great for fire season to keep the air clean inside. They also help when other things are going on outside like skunks, kicked up dust, the neighbors’ smoky fire pits, or even when it’s a bad pollen day. I’ve tried various brands and I still like the Coway AirMega 200M (same as the AP-1512HH). It’s not the quietest at higher speeds, and it’s not tiny, but it moves the air and filters very well. There’s a reason it’s long been the top pick of Wirecutter. If you want some more style, the various BlueAir models, especially the Pure line are very nice and also work well. They’re a bit expensive though. If money is no object, Austin Air makes some highly regarded machines. In general, UV and ozone are gimmicks. The biggest thing to look at are the CADR ratings. Higher numbers are good, they mean the unit is delivering more filtered air quicker. Always check replacement filter prices, often a good deal on a machine means they make money on selling filters.
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