Blueair
Blue Pure 511i Max
Based on 14 Reddit mentions
$139.00
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Most discussed features
Sentiment summary across the product areas Reddit users mention most.
Reddit mentions
Original Reddit posts and comments behind this analysis.
Apartment smells like weed
Going through this as well. I went to Best Buy and got 2 Blueair 511i Max air purifiers. Took like 30 minutes and the smell is 98% gone. It's coming from our bathroom. It shares a vent and fan with them. I figured that our because the closet that shares a wall with them and is right next to the bath
...lacmicmcd in r/Apartmentliving
May 24, 2025 6:28 AM
4
air purifier that can withstand travel??
I've flown repeatedly with my BlueAir 511 in checked luggage. It's comparable to a Levoit Core 300. Maybe your luggage is the problem?
rainbowrobin in r/AirPurifiers
May 2, 2026 10:17 PM
2
Please help me not waste money
Since you want to purify your whole 1300sq ft living space, do you have forced air heat and AC? If so, you can get a MERV 8 furnace filter that will work very well. If you don’t have forced air hvac, the box fan CR filter is the next best thing for the large living space. Otherwise for bedrooms, I r
...johnb300m in r/AirPurifiers
April 4, 2026 2:54 PM
2
Top 15 Best Air Purifiers for Asthma in 2026
Best overall: Coway Airmega AP-1512HH Mighty Probably the safest “default” choice. It’s been recommended for years because it just works — strong HEPA filtration, decent carbon layer, auto mode, and very solid reliability. Not fancy, but very balanced for most homes. Best budget pick: Levoit Core 30
...One_Mess525 in r/HomeClimateTech
May 18, 2026 7:19 PM
1
New to Air Purifiers - please help
Medify MA-25 is stronger for smoke; Blueair 511i is only good for small rooms Any idea why the Blueair is more expensive than the Medify, though?
Iris-Sofia in r/AirPurifiers
January 7, 2026 6:43 AM
1
Filter turning black after a day
We use the Blueair 511i air purifiers set to auto 24/7. The filter will need to be changed about every 7 or 8 months. We have been very happy with them.
No_Beginning2044 in r/CPAP
January 31, 2026 3:11 AM
1
Replacement filter help
My spec is 511i and Amazon lists it as available however when I order it they give me the wrong one, they give me the 511 one which doesn’t fit my purifier. I have gone in person to blueair trusted sellers and they have also given me the wrong one
Molmuzz26 in r/Blueair
April 4, 2026 10:16 AM
1
Levoit Core 200s vs 300 vs 300s for 20m2 bedroom with the priority for silence, Europe (PL).
One more thing: you say you want Levoit, but if noise is the most importantly thing you should look into the Blueair 511i Max. They “ionize” dust particles so they stick to the filter, and that allows them to run the fan at lower speeds while keeping similar pm2.5 filtration capabilities.
mjsarfatti in r/AirPurifiers
November 30, 2025 11:22 AM
1
Would an Air Purifier help solve this problem?
Yes, an air purifier would definitely help in the bedroom, but it must have one that uses carbon filters, not just HEPA ones. Price wise, since the room is only 121 sq. ft., you can go with a smaller room air purifier, but the most inexpensive ones may not work that well in a smoky room. I would sug
...Blowingleaves17 in r/AirPurifiers
February 5, 2026 8:12 AM
1
How does everyone deal with the fumes that comes off the 3D Printers that don’t have an Enclosure?
I went with the BlueAir Pure 511i Max. I have others for the whole home, and chose this one for next to my printer because it is much quieter than is typical for a HEPA air purifier.
Hungry_Hat1730 in r/BambuLabA1mini
April 2, 2026 1:30 PM
1