Blue Pure 311i+ Max
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Our signature performance is now even better, delivering up to 83% more cleaning power¹.
Our proprietary HEPASilent™ technology, which combines electrostatic and mechanical filtration to capture at least 99.97% of airborne particles down to 0.1 micron in size².
Only Blueair air purifiers use HEPASilent™ technology, quickly cleaning 465 ft² in 12.5 minutes or up to 1,116 ft² in 30 minutes.
Control 4 fan speeds (Night, 1-3), select auto, adjust brightness levels and enable/disable child lock with just two buttons.
The five-color air quality indicator (AQI) uses a particle sensor to detect pollution. Air quality reading is based on the concentration of fine particles (PM 2.5) in your space.
Welcome home feature
Your air purifier will go on standby when you leave the home and turn back on when you are getting close.
Accurate filter tracking
Using Blueair's proprietary RealTrack algorithm, you can easily view the most accurate filter usage and reorder before it expires.
Voice control assistance
Control your air purifier hands free and enjoy even more convenience.
Quietest air purifier on high
The Blue Pure 311i Max operates on low at 23dB, and is never louder than 50dB³. QuietMark certified⁴.
Let's clear the air longer
New and longer lasting filters (6-9 months)
Using Blueair's new proprietary RealTrack algorithm, you can easily view the most accurate filter usage and reorder before it expires.
It uses advanced machine learning to adjust its calculations based on your unique environment, taking into account factors like fan speed, usage time and pollutant levels.
Let's clear the air with style
Designed with the sleek & stylish look of Scandinavian design
Our five washable pre-filters are designed to seamlessly blend into your home.
Our pre-filters extend the life of primary filters, catching large airborne particles such as dust, lint, pollen, and pet hair.
Wi-Fi connectivity for remote controlYes
On/off timerYes (via Blueair App)
Speed control options1 - 2 - 3 - AUTO - NIGHT
Integrated air sensorsYes
Items packaged individually within box - please read manual for set-up instructions.
Dimensions(HxWxD)21 X 12.5 X 12.5 in
Energy consumption4-38 W
Sound level23 - 50 dB
Recommended room size465 - 1116 ft2
Air changes per hour (ACH)4.8
Clean air delivery rate (CADR) - Pollen300 cfm
Clean air delivery rate (CADR) - Dust300 cfm
Clean air delivery rate (CADR) - Smoke300 cfm
Number of filters1
Key upgrades include: more coverage, quieter on highest fan, more fan speeds, longer filter life, new colors, & smart technologies.
Press and hold down the LED button for 10 seconds to reset the replacement filter indicator.
To extend the limited warranty from one year to three (3) years, simply complete the product registration form in the 'Warranty' section of your customer account within (60) days of purchase or register through the Blueair mobile app.
Vacuum the exterior of the fabric pre-filter to remove dust as often as you'd like. When the pre-filter requires a deeper clean, it can be washed on a gentle, low-temperature cycle in the washing machine. Hang to dry.
¹ Comparing pollen CADR on high fan speed (Blue Pure 411a Max & 411i Max vs. Blue 411 Auto), other units may vary. Based on AHAM maximum allowable certified rating which may vary from the AHAM seal claimed valued.
² Test on PM 2.5 in 90mins
³Sound pressure at max fan. Assuming 387 sq.ft room size and 4.8 air exchanges per hour (AHAM AC-1)
⁴Quietest refers to eligibility for Quiet Mark certification, limited to 10-20% of quietest products. See https://www.quietmark.com/ for further information
*Min. reduction 99.9% of S. aureus, K. pneumoniae, P. aeruginosa, MS2, E.Coli, H1N1, A.Niger