Blue Pure 511

Blue Pure 511

Air Purifier, Small Rooms

$40.00 USD$99.99 USD
Clean air at the touch of a button

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 189 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
Additional Features
  • On/ off timer FALSE
  • Speed control options 1 - 2 - 3
  • Integrated air sensors No
Shipping & Warranty
  • Free & fast shipping
  • 30 day home trial
  • Free extended warranty

Why choose Blue Pure 511?

  • Compact & Space-Saving Design

    Sleek and small, the Blue Pure 511 fits perfectly in tight spaces like nightstands and shelves, making it ideal for bedrooms, dorms or cozy living areas.

  • Simple, One-Button Control

    The minimalist one-button control interface is all you need to purify your space—keeping things simple so you can focus on enjoying cleaner air.

  • Whisper Quiet

    Engineered to purify the air without disturbing your peace, this air purifier runs so quietly you’ll barely notice it’s on—perfect for restful sleep.

  • Sleek Scandinavian design

    Variety of washable pre-filters are designed to seamlessly blend into any space

“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

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.

  • Free and fast shipping

  • 30 day home trial

  • Extended warranty

FAQ

What pollutants does the Blue Pure 511 filter out?

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.

What room size is best for the Blue Pure 511?

To achieve maximum performance we recommend placing your Blue Pure 511 in a room around 189 ft² room so your air purifier can clean the air at the AHAM recommendation of 4 times every 12.5 minutes.

What are the noise levels of the Blue Pure 511?

Operates quieter than a whisper on low at 22 db and is no louder than 44 dB on high fan speed.

How often do I need to change the filters?

We recommend replacing the filter on your Blue Pure 511 every 6 months. When it's time to replace the filter, the filter replacement LED on the interface will turn red to remind you.

What is the warranty for the Blue Pure 511?

Register your product to extend the 1-year warranty to a 2-year warranty.

Blue Pure 511

Technical Specifications

  • Dimensions(HxWxD)

    13.4” x 7.9” x 7.9”

  • Product Weight

    4.2 lb

  • Energy Consumption

    16 W

  • Sound level

    24-49 dB

  • Air outlet

    top

  • Recommended room size

    189 sq. ft.

  • 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

Product reviews from Blueair

Reviews collected on the original Blueair website.

4.2
Rated 4.2 out of 5 stars
Based on 85 reviews
5
Rated out of 5 stars
53
4
Rated out of 5 stars
11
3
Rated out of 5 stars
8
2
Rated out of 5 stars
7
1
Rated out of 5 stars
6
75%would recommend this product
85 reviews
Sort
  • MP
    Michelle P.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    I love blueair

    I love my new blueair 511 thank you so much, i rest assured my baby is breathing clean air..

    Was this helpful?
  • AC
    Anne C.
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Except product

    Works like a charm and Bluair customer service is excellent.

    Was this helpful?
  • JO
    Jill O.
    Verified Buyer
    2 months ago
    Rated 5 out of 5 stars
    I breathe so much better with Blue Pure 511

    My BlueAir purifier suddenly stopped working after a year and when I contacted customer service, they replaced it immediately. My new Blue Pure unit arrived within a week and I am breathing easily again. I have allergies and this air purifier really minimizes the symptoms I have. Thank you BlueAir!!

    Was this helpful?
  • VK
    Victoria K.
    Verified Reviewer
    2 months ago
    Rated 5 out of 5 stars
    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?
    B Profile picture for Blueair
    Blueair
    2 months 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.

  • NM
    Nancy M.
    Verified Buyer
    2 months ago
    Rated 5 out of 5 stars
    Trust this Air Cleaner

    Great product and great customer service!

    Was this helpful?
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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.

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