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Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
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Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
Blue Pure 311i+ Max
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Blue Pure 311i+ Max

Air Purifier, Large Rooms

4.6
Rated 4.6 out of 5 stars
4.6 Stars (2,147 Reviews)
Select Model
One Time Shipment
  • 1 Air Purifier
  • 1 Particle & Carbon Filter
  • 1 Pre-Filter in Stockholm Fog
  • 1 Replacement Filter
  • Save 15% on every filter
  • Pay when we send it
Select Filter Type
  • Most Popular

Blue Pure 311i+ Max is designed with sensitive groups in mind. Equipped with advanced HEPASilent Dual filtration technology that removes airborne allergens, dust, and asthma triggers.

  • Quickly cleans 525 ft² in 12.5 minutes, 1,260 ft² in 30 minutes, & 2,520 ft² in 1 hour.
  • Automatically detects and quickly removes pollutants such as dander, pollen, dust mite matter allergen.
  • Compact with 360-degree air intake, so you can place it anywhere
  • RealTrack Technology® accurately tracks filter lifetime based on usage and pollutant levels.
  • Variety of washable pre-filter colors designed to blend seamlessly in your home
  • Perfect for kitchens or living rooms
  • Place anywhere with 360˚ design
  • Automatically Adjust Fan Speed
  • Instant air
quality readings
  • PM 2.5 pollutant tracking
  • App & Wifi connectivity
  • RealTrack Technology®
  • Smart home integration

“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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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

Exclusive features in the Blueair app

Independently proven performance

Blue Pure 311i+ Max

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

  • Free and fast shipping

  • 30 day home trial

  • Extended warranty

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.

4.6
Rated 4.6 out of 5 stars
Based on 2,147 reviews
Total 5 star reviews: 1.7k
Total 4 star reviews: 158
Total 3 star reviews: 77
Total 2 star reviews: 44
Total 1 star reviews: 130
88%would recommend these products
2,147 reviews
  • BL
    Bruce L.
    Verified Buyer
    3 minutes ago
    Reviewing
    Blue Pure 311i+ Max
    Rated 5 out of 5 stars
    Blue Pure 311i+ Max Rating

    Excellent

  • CH
    Connie H.
    Verified Buyer
    12 minutes ago
    Reviewing
    Blue Pure 511i Max
    Rated 5 out of 5 stars
    Blue Pure 511i Max

    This unit works very well and we have been pleased with it’s performance.

  • LV
    Linda V.
    Verified Buyer
    1 hour ago
    Reviewing
    Blue Pure 311i+ Max
    Rated 5 out of 5 stars
    Very pleased!!

    I’ve had the same version for a few years and was so satisfied that I bought another for a different bedroom.

  • SC
    Stephen C.
    Verified Buyer
    Yesterday
    Reviewing
    Blue Pure 311i+ Max
    Rated 5 out of 5 stars
    Simple And Effective

    I love the simplicity of the engineering, it’s quiet operation and how well it cleans the air

  • B
    Brad
    Verified Reviewer
    Yesterday
    Reviewing
    Blue Pure 211i Max
    Rated 5 out of 5 stars
    Fantastic Purification Power

    Purifier works really well. Have had multiple experiences where I cooked in my kitchen and quickly spiked the PM ratings up to 100. Turned the purifier on max and it brought the readings back down to 0 within about 10 minutes - incredibly quickly. I have had other purifiers in that space before in a similar situation, and they took 30-45 minutes to bring the air quality back to normal. Additionally, the purifier is also very quiet even on the max setting.

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.