Blueair® Blue Pure 311i+ Max Air Cleaner

SKU: ABL311i+Max
Only Blueair air purifiers use HEPASilent™ technology, delivering maximum filtration with minimum noise. This dual filtration technology pioneered by Blueair combines electrostatic charging of particles and mechanical filtration. Airborne particles are charged before they reach the filter, causing the particles to adhere to the polypropylene fibers in the filter. This allows the use of a less dense filter with less clogging, and permits more air to be pushed through with less noise and less energy than with traditional HEPA filtration alone. Compare Blueair Models
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CADR 300 cubic ft./min.

Recommended room size up to 450 sq.ft. (18'x25'.)

  • Room size is based on standard 8' room ceiling height.
  • 5 air-changes per hour with the unit on high speed.
  • See How to Choose an Air Cleaner to calculate for any size room.

The BLUE PURE 311i+ Max features:

  • HEPASilent™ technology to deliver maximum filtration (up to 83% faster) with minimum noise (up to 50% less).
  • 4 fan speeds (1, 2, 3, night), plus child-lock and brightness controls.
  • Wi-Fi connectivity via Blueair app, allowing you to monitor your home's air quality and adjust the settings remotely.
  • Integrated air sensors for quick air quality readings via an easy LED 5-color indicator-- displayed on the unit or within the app--that keeps track of the levels of coarse particles (Particulate Matter10) like dust, pollen, and mold spores; as well as fine particles and ash (PM2.5 and PM1) like smoke, pollution and viruses.
  • Welcome Home feature using geo-fencing technology via the Blueair app to put the air purifier into standby mode when you leave the house and turn it back on again as you approach home.
  • Accurate filter tracking using Blueair's proprietary algorithm to easily view the most accurate filter usage and reorder before filter expires. Filters generally last 6-9 months.
  • Includes a washable pre-filter in the color Stockholm Fog (gray).
  • Voice control Assist to control your air purifier hands-free.
  • Quiet operation 23-53dB for 211iMax; Quiet Mark Certified.
  • Low energy use- Energy Star Certified.
  • Size and weight 21" x 12.5" x 12.5"; 7.9 lbs.
  • Warranty up to 3 years with registration.

Compare Blueair Models