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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
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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
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Blue Pure 311i+ Max

Air Purifier, Large Rooms

4.6
Rated 4.6 out of 5 stars
4.6 Stars (1,850 Reviews)
Select Default Title
One Time Shipment
  • 1 Air Purifier
  • 1 Particle & Carbon Filter
  • 1 Pre-Filter in Stockholm Fog
Filter Subscription
  • 1 Replacement Filter
  • Save 15% on every filter
  • Pay when we send it
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Select Filter
Everyday filter, tackling 99.97%¹ of dust, odors, allergens, smoke, & more.
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  • Save 25% on your first filter

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

  • Free and fast shipping

  • 30 day home trial

  • Extended warranty

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

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 1,850 reviews
Total 5 star reviews: 1.5k Total 4 star reviews: 132 Total 3 star reviews: 60 Total 2 star reviews: 35 Total 1 star reviews: 108
89%would recommend these products
1,850 reviews
  • JM
    Jim M.
    Verified Buyer
    3 minutes ago
    Reviewing
    Blue Pure 511i Max Bundle
    Rated 5 out of 5 stars
    Pure Air 511i Max Bundle

    I now have 4 of these air purifiers running in my 2 story house. They went to working right away and I am amazed at how quickly they detect things in the air that I can't even see. The best part of my experience with them is my sneezing stopped within a day after I started running them.

  • AC
    April C.
    Verified Buyer
    Yesterday
    Reviewing
    Blue Pure 211i Max
    Rated 5 out of 5 stars
    Very quiet compared to Shark

    This is very nice so far. Hopefully it lasts more than a few months unlike my Shark. This cleans the air quick! I have had it for a week or so now and my nose is not stuffy anymore! Also, all other air purifiers must make a very high pitch noise that scares my dogs- as soon as I replaced my Shark with Blue- my dogs stopped shaking and pacing around! LOVE IT- so far.

  • JE
    June E.
    Verified Buyer
    Yesterday
    Reviewing
    Blue Pure 311i+ Max
    Rated 5 out of 5 stars
    Blue Pure 311+ Max Cleaner Review

    Blue Pure 311+ Max Cleaner Review. Works well. Others had reported it was noisy but I don't have an issue. There is a slight noise on #2 but it isn't that loud to me. I find it easy to ignore sound.

    I was disappointed in the silver base as it is too large for this model. It probably is meant for a larger model. I found out later you didn't need the silver base but I had already bought it. At first I worried the cat would knock cleaner over as it isn't fastened to base. It is just loosely sitting on base. Cat initially checked cleaner out but now ignores it.

    B Profile picture for Blueair
    Blueair
    Yesterday

    Thank you for sharing your detailed feedback on the Blue Pure 311i Max. We’re glad to hear it’s performing well and that the sound level has been comfortable for you. We appreciate you noting the chrome ring base experience. It is designed for our larger Blue Signature models, which explains the fit. Thanks for choosing us and for welcoming cleaner air into your home.

  • AB
    Ann B.
    Verified Buyer
    2 days ago
    Reviewing
    Blue Pure 311i+ Max
    Rated 5 out of 5 stars
    Very Pleased

    I purchased the Blue Pure 311i+ Max for my ~600 sq ft finished basement to add some flow to what felt like stagnant air and to help with a persistent odor that I couldn't identify. Not only has the unit solved both issues, but it's super quiet and the air feels fresh and pure 100% of the time. I'm so happy with this device.

  • KL
    Ken L. K. L.
    Verified Buyer
    5 days ago
    Reviewing
    Blue Pure 511i Max
    Rated 5 out of 5 stars
    Doing great on burnt bacon odor

    Even though we have an overhead vent above our stove I often stink up the house when I'm cooking. The Blue Pure unit does a good job removing the smell. It's easy to tell with the color coded air quality indicator. The app is nice for keeping track of the filter 'health'. We still have quite a while before a new filter will be needed. I was concerned about having to replace it too often but that doesn't look like an issue.

    B Profile picture for Blueair
    Blueair
    2 days ago

    Thank you for the great feedback on your Blue Pure 511i Max. We’re glad to hear it’s helping tackle cooking odors and making a noticeable difference in your home. It’s great that the air quality indicator and app are making it easy to track performance and filter life. We appreciate you choosing Blueair and hope it continues to support a fresher, more comfortable space.

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.