Blueair - Blue Pure 311i Max
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Reddit Reviews:
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Based on 1 year's data from Jan 28, 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"
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."
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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."
"Love the washable outside fabric filter"
"washable prefilters are a huge win if you’ve got pets that shed."
32
0
"it’s majorly helped w allergies and dog smell"
"We are a household full of asthmatics with allergies. We have 4 BlueAir purifiers and I cannot recommend them enough."
"it's fantastic in keeping the farm smell to a minimum."
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0
"I've had an IQAir Health Pro running non-stop for about 15 years now, and the only maintenance performed were regular filter changes."
"the only ones whose fans have stayed smooth and quiet. ... i have owned 8 over 5-6 years at least without one single issue."
"have had mine for years and run it 24x7"
Disliked most:
0
17
"According to Shark, my air quality is a perfect 100% ALL DAY LONG. Even when: - My elderly Akita wanders by shedding fur like it's his job (and also pooting pretty non-stop) - I deliberately sprayed Lysol directly in front of it (for science!) ... The Shark? "100% perfect air, nothing to see here!" 🙄 ... But because it thinks the air is always fantastic, when I put it on auto/Eco mode, the higher fan rate is never triggered. ... It turned bright red, and said that the air would be clean again unless 60 minutes. It was back to 100 within a minute or two."
"I ordered 4 of these things and ALL of them sat off all day and night saying the air was perfect. ... All 4 of them did the same thing and would rarely come on."
"It's no wonder the filters last for 5 years, the thing never runs. ... They are not "purifying the air" if they are not moving the air through the filters."
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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"
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."
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"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."
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"I think that having a pre-filter like that is the main problem because you have all these particles stuck to it which can become attached to anything or anyone that touches it ( for example pet's fur) and then they carry those contaminants everywhere again. ... I'm in Los Angeles so I got it because of the wildfires and possible asbestos but I'll be returning it because of this design. ... Yes now imagine it sucking all the bad particles from nearby wildfires, for example asbestos. Then a dog can brush their body through the fabric and carry it around until it gets lose in the air again ... I didn't even know the old design was the same way. How can they be rated so high in many websites? Even consumer reports has the of them. Now I even distrust CR"
"it was so poor at performance. ... With the Blueair, every month i have to clean the pre filters as they are caked in dust! I had the winx for a while and no once did the pre filters get any dust on them, despite it being left on 24/7. You could visibly see dust building up on its base, and around it but nothing inside it. ... but it wasnt strong enough to make it inside to the pre filters."
"It's no wonder the filters last for 5 years, the thing never runs. ... They are not "purifying the air" if they are not moving the air through the filters."
aaf14 1.0Own Levoit 400 for our main living area (1,100 sq ft apt), the smaller one in our bedroom (toddler sleeps with us). Had them prior to Covid and love them. I vacuum the filters when I can per the manual. I got my mom the blueair 311i max because she was closer to one of the “minor” fires here in LA and she loved it so much she got the mini for her bedroom along with my dad’s (they sleep in separate rooms lol). I ended up getting the mini to bring to work.
CanOk9124 1.0We just got a Blueair 311i MAX last week! So far it seems good
Fungusunderaressack 1.0What about brand names "hepa" filters like the blueairs "hepasilent" or airdoctors "ultrahepa" filters that use electrostatic and other forms of collection? We just picked up a blueair 311i max from target that was on sale for 159 usd. We are going on a mold prevention spree in our home in south Louisiana due to mold allergies with my kids. There's so much stuff out there to read through my head feels like it's going to implode lol. I just want something that will collect mold spores out of the air. I feel like if it can capture mold spores it'll get everything else also.
gregthejingli 1.0We use the Blueair 311i max and 411i max, you can order a slightly more expensive smokeblock filter for them specifically made to filter out the particles in wildfire smoke. These units will also give you a readout on your phone to monitor the air quality in your home.
lmike215 1.0this was the upgrade pick on the wirecutter article that recommended the coways. i have a few 411i and 311i around and they do a phenomenal job
Mysterious_Head1556 1.0We have this one in our bedroom https://www.blueair.com/us/shop/air-purifiers/blue-pure-311i-max/3539.html Blue Pure 311i Max for medium rooms! Looking online it looks like they've updated the model a little bit, but looks to be relatively the same! The filter we have on auto subscription is for this one too so couldn't have changed too much. We got the Pure 511 version for our nursery though since it's a pretty small room.
Tupples- 1.0I can also vouch to BlueAir customer support. I bought a second-hand air purifier and found out it was malfunctioning (weird noise coming from the motor). I sent over an email to suppport after having asked the seller for the receipt and they were able to send a new unit to me even out of warranty. Well, what happened to that unit? IT GOT STOLEN FROM MY PORCH. So I contacted BlueAir again. And they sent me a new one, AGAIN! As to the actual purifier, it's a 311i Max, it looks great and seems to work fine too. Have noticed less dust in the room it's at. It's pretty powerful but my rooms are all closed off from one another so doesn't help much for other rooms, however.
ahsm 0.6I have the 311i max and I really like it. I never knew air purifiers could be so good. I always thought it was a scam until I used one and noticed the difference. I have one in my living room and when we fry onions or something similar it goes off right away. Never knew they had an app.
_sparklestorm 0.6Powered up my new Blue Pure 311i+ Max w/smoke filter this weekend and so far so good!
Xibbs 0.6I tried a few out and ultimately decided on the Blueair 311i. Control via homebridge and made a card for my dashboard. https://preview.redd.it/n7wu1a0kylje1.jpeg?width=1290&format=pjpg&auto=webp&s=1eaecfaf027c3dfbf0b23ca8015fdae95c1a7e73
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