Blueair - 311 Auto
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Reddit Reviews:
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Last updated: Dec 15, 2025 Scoring
Liked most:
59
5
"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"
"It's also super quiet (I sleep with one right next to me)"
"quiet (both other units were a good bit louder); I sleep with this on every single night"
46
3
"I still have 3 original 5500's from Winix still in use today ... all of my 5500/5300's are over 6 years old."
"My two Winix units are 11 years old with 24/7 use and still going strong!"
"My Winix 5300 is almost 14 years old now, so I'm very satisfied with it."
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."
18
1
"it’s majorly helped w allergies and dog smell"
"HEPASilent tech is real — gets dust, mold, pollen, pet funk, all of it"
"it's fantastic in keeping the farm smell to a minimum."
61
3
"this thing has been amazing!!! ... I have two kids with seasonal allergies and this thing has been amazing!!!"
"it’s majorly helped w allergies and dog smell"
"HEPASilent tech is real — gets dust, mold, pollen, pet funk, all of it"
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
4
"The Levoits I got that had sensors all broke within the first few months."
"My Levoit air purifiers don’t do that, they ignore my farts."
"My Levoit thinks it's in an OR or a chip clean-room at Intel. It records a tiny blip almost every night, around 0300 or so, but that's about it."
3
6
"I got upset when I found out my 4 levoit core 300 were not hepa lol."
"Levoit is a popular brand but they came under fire in the last few years, can't remember exactly when, for lying about being HEPA rated and/or no longer can claim to be or something."
"it turned out my models weren’t “true HEPA” as advertised."
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."
I have BlueAir in all my rooms. Makes a significant difference for me.
r/dubai • Air Quality in Our Buildings, Anyone using Air purifier? ->It helps a lot. I bought it due to smoke but I’m happy to get rid of cooking and dog smells. I have one from Blueair.
r/askTO • Had an air purifier helped with the air quality? Is it worth getting one? ->We love our blueair also. Got a dog a month ago and happy to hear from guests our house doesn’t have a dog smell.
r/askTO • Had an air purifier helped with the air quality? Is it worth getting one? ->We are a household full of asthmatics with allergies. We have 4 BlueAir purifiers and I cannot recommend them enough.
r/workingmoms • Is it worth it to buy an Air Purifier? If so, what's the best air purifier for home in your view/experience with it? ->We run 3 in our house, one in the main living area (diy pc fan with hvac filters), and one in each bedroom (blue air brand or something, I think). Also consider plastic on leaky windows (cheap sliders).
r/saskatoon • Air purifier ->Sorry, what "air quality problems"? Can't say we've noticed any, with our 3 air purifiers running 24/7 in a one-bedroom apartment... 😉 (Both of us have pollen allergies and one of us has asthma.) That should answer your question. Seriously, buy an air purifier. Once you feel the difference you'll probably end up getting a few more. We've got two of the medium Coway models (Airmega AP-1512HH or 200M) and a smaller BlueAir. They also help with smells -- bathroom, pet, or cooking. Highly recommend the Coways because they: * Are whisper-quiet on all but the highest setting, and can auto-adjust (though we usually leave them on medium because they get loud if they kick into high). * Move a lot of air for their size * Have filters that last way longer than they're rated for (as long as you clean the prefilter) * You can turn the main light on the purifier off for use in a bedroom at night Tip: it's better to get several medium air purifiers and put one in each room or area rather than getting just one big one.
r/askTO • Had an air purifier helped with the air quality? Is it worth getting one? ->There's also the Winix D360/480 series as a Home Depot exclusive, which doesn't have ionizers and has a pretty high CADR rate. I don't think there are after-market filters but Winix said they continue to manufacture filters for 10 years after so maybe you won't have problems. I'm eyeing it. Honestly my first air purifier was BlueAir and I loved it. Dead silent on the first setting (I think having a vertical fan helps), and I could run it on the high setting all day. I have birds and had no idea about the ionizer though. I've gone through one Honeywell which made my room smell like a plastic pool toy, and I'm not so happy with the return-replacement either, I ran it on turbo today and got a pretty big headache and felt like I was having trouble breathing, which sounds insane but it stopped when I turned it off. I'm almost tempted to just go get another BlueAir and remove the ionizer manually, but I also know that their CADRs are based off of ionizer on, and the larger sizes have significantly more expensive filters.
r/AirPurifiers • I’m lost ->A good furnace filter taped to a fan so it pulls air through it will works well. I’ve got a couple blueair units mostly because the fans are nice and quiet and they look nice so I can use them year round.
r/vancouver • What air purifiers are best for forest fire smoke? In a 400sq ft room? ->Blueair has been awesome for our basement, dogs, cats, sometimes chickens and always a burning fire for the wood stove and you would honestly have no idea all of that was going on. I wfh in the basement sometimes and I could tell that without that I was feeling gunky. Buying it made a huge difference!
r/CleaningTips • What air purifier do you swear by? Trying to cut through the hype. ->Coway, GermGarurdian, and Blueair are all top rated. I personally have 2 blueair they work great I have 2 cats and my thanksgiving guests couldn’t smell them or their litterbox at all!
r/BuyItForLife • Home air purifier. Especially those good for people with allergies ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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