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Blue Pure 511

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Blue Pure 511
Blue Pure 511
Blue Pure 511
Blue Pure 511
Blue Pure 511
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Blue Pure 511
Blue Pure 511
Blue Pure 511
Blue Pure 511
Blue Pure 511
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Blue Pure 511

Air Purifier, Small Rooms

4.2
Rated 4.2 out of 5 stars
80 Reviews

The Blue Pure 511 air purifier combines powerful filtration with a sleek, compact design perfect for small spaces. Whisper-quiet, energy-efficient, and easy to use, it delivers cleaner, healthier air with minimal maintenance.

  • Quickly cleans 182 ft² in 12.5 minutes and up to 413 ft² in 30 minutes.
  • Three fan speeds quickly removes pollutants such as viruses, bacteria, dust, and odors.
  • Consuming as little energy as a single lightbulb
  • Variety of washable pre-filter colors designed to seamlessly blend into your space.
  • Powerful yet
whisper-quiet
  • Simple one
button control
  • Place anywhere with 360˚ design

“It’s a great performer for a machine of its size and power. It’s also extremely quiet, staying below our 50-decibel limit for comfortable TV viewing and sleeping, even on high...its display goes dark automatically, so this machine won’t be a distraction when you’re trying to nap or work.”

Wirecutter Best Air Purifiers of 2024

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Why choose Blue Pure 511?

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.

Blue Pure 511

Technical Specifications

  • Dimensions(HxWxD)

    34 x 20.1 x 20.1 cm

  • Product Weight

    4.2 kg

  • Energy Consumption

    16 W

  • Sound level

    24-49 dB

  • Air outlet

    top

  • Recommended room size

    16 m²

  • Air changes per hour (ACH)

    4.8

  • Clean air delivery rate (CADR)

    Pollen 123 cfm
    Dust 123 cfm
    Smoke 122 cfm

  • Number of filters

    1

  • Speed control options

    1 - 2 - 3

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

⁴ Noise refers to acoustic power at max. fan compared to Blue Auto models.

*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.

4.2
Rated 4.2 out of 5 stars
Based on 80 reviews
Total 5 star reviews: 51 Total 4 star reviews: 11 Total 3 star reviews: 7 Total 2 star reviews: 6 Total 1 star reviews: 5
78%would recommend this product
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80 reviews
  • VK
    Victoria K.
    Verified Reviewer
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    Clean Air Blessing

    Firstly, I never leave product reviews because my time is always full with life. But, I needed to do so on this product. It has been such a wonderful addition to my home that I actually purchased a second one for another room in the house. When it came time to change the filters, I was astonished, to say the least, of its effectiveness in cleaning the air in my home. It literally blew my mind. I must share some pictures of all the dust and pet dander ( I have a dog ) it collected. I routinely change my HVAC air filter every other month as well as having my air ducts cleaned and I was still collecting dust and other air particles with my purifier.

    Look at my before and after of the filters when I changed them and then look at the collection of particles on the cover. I do clean my home. I even dust my walls. I do a lot and I still collected so much on my purifier. That's how powerful this purifier is and I totally recommend buying one. Especially this brand. It catches particles we don't see. Can you imagine breathing all of that in? No thank you.

    Thank you BluAir

    Was this helpful?
    BlueEU Staging
    3 minutes ago

    Thank you for sharing your valuable feedback. Reading your incredible note has absolutely made our day, and we are so deeply moved that you took a moment out of your busy life to share your journey with us. Knowing that our air purifiers have earned such a special place in your home, and that you welcomed a second one to protect your family, is the highest compliment we could ever receive. Your dedication to maintaining a pristine environment for you and your pet is truly inspiring, and we would be absolutely thrilled to see the photos you mentioned of your filter's impressive collection! We are so incredibly honored and grateful to have you as a passionate, loyal member of our Blueair family, and we look forward to keeping the air in your home pristine for many years to come.

  • GC
    Georgiann C.
    Verified Buyer
    Rated 3 out of 5 stars
    2 months ago
    Blue pure 511 prefilter

    I got the filter separate from the purifier and it was not clear that there were 2 shipments on this order - also, I thought this filter was dark grey, I got a dark blue.

    Please advise - thank you

    Just now setting it up to use

    Was this helpful?
    BlueEU Staging
    2 months ago

    Thank you for reaching out, and we appreciate your patience while setting up your new Blueair unit. We sincerely apologize for the confusion regarding your shipment and for the incorrect pre-filter color you received. A member of our support team will contact you directly to investigate this further and ensure we get the correct items to you as quickly as possible.

  • D
    DianeK
    I do not recommend this product
    Rated 2 out of 5 stars
    9 months ago
    Disappointed

    Not thrilled. Have replaced the filter many times in the past 1 1/2 years (as evidenced by my orders) and have extra pre filters that i wash regularly. My bedroom walls, drapes, picture above unit and the unit's cord itself require constant cleaning. I was going to buy a larger model for this SMALL room but quite frankly I'm afraid I'll be as dissatisfied with it as I am the 511.

    Was this helpful?
    BlueEU Staging
    9 months ago

    We appreciate you taking the time to share your experience with your Blue Pure 511. It sounds like you’ve been diligent in maintaining your purifier. Dust buildup on nearby surfaces can sometimes occur because the purifier draws airborne particles toward itself, which may make settled dust more noticeable in the surrounding area. We’ve reached out directly to learn more and review your unit’s performance.,Blueair,Blueair Team,clientresponse

  • JH
    Jenn H.
    I do not recommend this product
    Rated 2 out of 5 stars
    1 year ago
    Swing and a miss!

    I was disappointed that it started statically charging dust which stuck to the unit, walls, and furniture nearby. After digging into why, I was surprised to find out the machine has a form of ionizer (which can create small amounts of ozone). I didn’t feel it was safe enough for my home and I don’t think it did as good a job as a unit with a true HEPA filter.

    Was this helpful?
  • D
    Drina
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    I’ve underestimated this QUALITY AIR FILTER🥰

    Wonderful filter!! but you need at least 2 of the smaller units. My 2 sons who stink up the place when coming in from sports& Cooking aromas NOW NOTHING!! My prayers have finally been answered

    Was this helpful?