Why choose Blue Pure 311i+ Max?
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Wellness in every breath
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Whisper-Quiet Sleep Mode
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One-Touch Control
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Stylish Scandinavian Design
“I recommend Blueair air purifiers to my patients because of their strong performance and their commitment to third party testing, which gives me peace of mind that the airborne particles that commonly exacerbate allergy and asthma symptoms are being captured*”
Dr. Priya Bansal
“Blueair's 311i+ Max was the best at capturing the full range of contaminants floating through the air in a typical home. Its advanced multi-level filtration captures contaminants of all sizes — not just dander and pet hair, but also cooking fumes, dust mites and pollen.”
Best Overall Air Purifier
Meet our filters
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Particle & Carbon
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SmokeBlock
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AllergenBlock⁵
Exclusive features in the Blueair app
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Smarter air, customized to you
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Schedules to fit your lifestyle
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Welcome Home Technology
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Accurate filter lifetime tracking
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Free and fast shipping
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30 day home trial
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Extended warranty
Technical Specifications
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Dimensions(HxWxD)
21" X 12.5" X 12.5"
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Product Weight
7.9 lb
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Energy Consumption
38 W
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Sound level
25-50 dB
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Air outlet
Top
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Recommended room size
525 ft²
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Air changes per hour (ACH)
4.8
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Clean air delivery rate (CADR)
Pollen 446 cfm
Dust 370 cfm
Smoke 339 cfm
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Number of filters
1
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Speed control options
1 - 2 - 3 - Auto - Night
FAQ
- LFLee F.Verified Buyer4 minutes agoReviewingBlue Pure 211i MaxRated 5 out of 5 starsLee’s house
Seems to work very well
- PSPeter S.Verified Buyer16 hours agoReviewingBlue Pure 311i+ MaxRated 5 out of 5 starsbest Air Filter
I did a lot of pre purchase research and very happy with my choice to purchase Blue Pure 311+Max. Love the efficiency and operation modes including Night and Auto.
- LALorne A.Verified Buyer17 hours agoReviewingBlue Pure 311i+ MaxRated 5 out of 5 starsexcellent product
This is my second unit
- GRGayle R.Verified Buyer4 days agoReviewingBlue Pure 211i MaxRated 5 out of 5 starsWorks well
Great filter. Easy to use. Improved our indoor air quality noticeably.
- AAnnieVerified Buyer1 week agoReviewingBlue Pure 311i+ MaxRated 5 out of 5 starsLove my Blueair so much just bought the Signature for another room
You can visually see when dust gets accidentally released in the air (my renal unit has crappy metal blinds that gather dust like crazy!) and my 311i+ Max “auto” feature kicks the purifier into high gear to suck it out of the air. I literally saw the dust in the sunlight began to get sucked in toward the purifier like a vortex. Amazing!
I live in a region where climate change has so terribly affected the area, we have destructive wildfires regularly. What was once in a blue moon thing now has become normal to experience multiple every year. I recently moved into 11 miles northwest and in my new city, about 28 miles away from wildfire started. Although my FireWatch app alerted me to the fire it was far enough away and weather conditions were fairly calm so I wasn’t concerned about evacuating at the time & temporarily quieted my notifications for 30 minutes. But then I heard my purifier kick into high gear. Inspecting what was going on causing it to put itself in high gear, I walked to that end of my unit, opened my patio door and slightly smelled the smoke but still didn’t see it. However, my 311i+ Max caught it and cleaned it up in 20 minutes!
I didn’t realize spray deodorant was a problem but my Blueair does. Even spraying it in a second bathroom and waiting a few minutes, if I then walk into my room past my Blueair, it will automatically increase to high to clear out whatever pollutants it’s picking up from my recently sprayed on deodorant. Same when I put my favorite…