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Ready for whatever’s in the air

Switch to SmokeBlock when smoke, smog and stronger odors call for extra protection.

Smarter cleaning on autopilot

Built-in sensors detect changes in your air and automatically adjust cleaning

Blue Pure 311i+ Max + SmokeBlock Filter Bundle
Blue Pure 311i+ Max + SmokeBlock Filter Bundle
Blue Pure 311i+ Max + SmokeBlock Filter Bundle
Blue Pure 311i+ Max + SmokeBlock Filter Bundle
Blue Pure 311i+ Max + SmokeBlock Filter Bundle
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Blue Pure 311i+ Max + SmokeBlock Filter Bundle

Powerful smart air purification with an extra SmokeBlock filter for added protection against smoke, smog and strong odors.

Save 20%

Designed for

Large rooms, living rooms, kitchens

Great for

Wildfire season, smoky days, strong odors

One Time Shipment
  • 1 Air Purifier
  • 1 Particle & Carbon Filter
  • 1 SmokeBlock Filter
  • 1 Pre-Filter in Stockholm Fog
  • 1 Replacement Filter
  • Save 15% on every filter
  • Pay when we send it
Select Filter Type

  • Free & fast shipping
  • 30 day home trial
  • Free extended warranty

Smart, quiet purification for fresher rooms and everyday peace of mind with extra smoke protection on hand when you need it most.

  • Quickly cleans 525 ft² every 12.5 minutes & 2,520 ft² in 1 hour
  • Adds extra protection during wildfire and smoke season
  • Real-time readings make air quality easy to understand
  • Helps reduce pollen dust pet dander and other allergy triggers
  • Fits almost anywhere with a compact 360° design
  • Gives you easy control at home or away
  • Auto Mode keeps cleaning effortless
  • Specialized filters for your needs
  • Accurate filter lifetime tracking
  • Control from anywhere

Ready for whatever’s in the air

Switch to SmokeBlock when smoke, smog and stronger odors call for extra protection.

Smarter cleaning on autopilot

Built-in sensors detect changes in your air and automatically adjust cleaning

Why choose Blue Pure 311i+ Max?

4 layers of filtration remove
99.97%
¹
of airborne pollutants

HEPASilent™ technology combines electrostatic and mechanical filtration to capture tiny airborne pollutants like pollen, dust and smoke, faster* and quieter⁴ than traditional HEPA.

Meet our filters

  • Particle & Carbon

    Our original filter. Removes allergens and traps light household odors from pets, cooking and smoke

  • SmokeBlock

    2x more activated carbon than our original filter. Removes up to 99.99%³ of wildfire smoke

  • AllergenBlock⁵

    Extra protection against allergens. Traps and neutralizes dust, pollen and pet dander

“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

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Exclusive features in the Blueair app

Independently proven performance

Proud to be a Certified B Corp

As a B Corp, we’re part of a global community of businesses that meet high standards of social and environmental impact.

  • Free and fast shipping

  • 30 day home trial

  • Extended warranty

Blue Pure 311i+ Max + SmokeBlock Filter Bundle

Technical Specifications

  • Dimensions(HxWxD)

    21 x 12.5 x 12.5

  • Product Weight

    7.9 lb

  • Energy Consumption

    38 W

  • Sound level

    23-50 dB

  • Air outlet

    Top

  • Recommended room size

    525 ft²

  • Air changes per hour (ACH)

    4.8

  • Clean air delivery rate (CADR)

    Pollen 446 cfm
    Dust 370 cfm
    Smoke 339 cfm

  • Number of filters

    1

  • Speed control options

    1 - 2 - 3 - Auto - Night

FAQ

Our HEPASilent™ dual filtration technology removes 99.97%1 of airborne particles down to 0.1 microns, ensuring pollen, cooking odors, smoke, dust, pet dander, mold, chemicals, allergen matter and even tiny particles such as viruses and bacteria2, are captured with minimal noise and energy consumption.

¹ Tested on PM 2.5 up to 90 mins

² Based on ELISA deactivation testing of Pollen (Cry J1), Pet Dander (Fel d1, Can F1), Dust Mite Matter (Der f1) on the filter media in 60 minutes.

³ Compared to standard in-unit filter. Based on removal testing of particles 0.4-0.7 μm in 60min in a 30m3 room. Performance may vary.

⁴ When similar CADR was measured, Blueair models with mechanical and electrostatic filtration achieved less noise with less energy than same models with only H13 HEPA mechanical filtration.

⁵ AllergenBlock refers to inanimate allergens pollen, dust and pet dander.

* Comparing CADR performance of Blueair models with mechanical and electrostatic filtration vs same models with only H13 HEPA mechanical filtration.

Note: CADR and room size values have been updated to meet new DOE standards. Website listings reflect the most accurate information. You may notice slight differences versus product packaging during the transition.