Blue Pure 511i Max

Blue Pure 511i Max

Air Purifier, Small Rooms

$56.00 USD$139.99 USD
Our smallest smart air purifier

Keep your home a safe haven with the Blue Pure 511i Max, featuring advanced air purification that’s quiet enough for nap time yet powerful enough for allergy season.

  • Quickly cleans 237 ft² in 12.5 minutes, 569 ft² in 30 minutes, & 1,138 ft² in 1 hour.
  • Automatically detects and quickly removes pollutants such as viruses, bacteria, dust, and odors.
  • Compact with 360-degree air intake, so you can place it anywhere-on the floor or table.
  • RealTrack Technology® accurately tracks filter lifetime based on usage and pollutant levels.
  • Perfect for bedrooms or offices
  • 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
Additional Features
  • Wi-Fi connectivity for remote control Yes
  • Speed control options 1 - 2 - 3 - 4 - Auto - Night
  • Integrated air sensors Yes
Shipping & Warranty
  • Free & fast shipping
  • 30 day home trial
  • Free extended warranty

Why choose Blue Pure 511i Max?

  • Perfect for busy families

    The "Welcome Home" feature automatically turns the purifier on when you're near and off when you leave, so your family always returns to a clean, safe environment without any extra effort.

  • Whisper quiet when you need it most

    A sound level as low as 19 dB, the Blue Pure 511i Max operates quietly, ensuring it won’t disturb you or your family.

  • Kid-friendly design

    Equipped with a compact, rounded shape, and display lock, the Blue Pure 511i Max is designed to fit seamlessly into any room without sharp edges, making it safe for children’s bedrooms or play areas.

  • Reliable air quality insights

    Monitor indoor & outdoor air quality, set schedules, and have 24/7 control of your air purifier in the trusted Blueair app.

“I love that I can operate it from anywhere with the app. I can get it going before I get home from being outdoors. It is a very quiet machine. It has night mode and will dim or turn off all lights on the machine.”

Lesann

“I like having a one for each high-traffic room such as our master bedroom, office, and living room. Although this one was intended for our office, it is by far the most attractive air purifier I have yet to see, so I swapped it for the one we had in our living room.”

MrsAdams

“The unit will automatically adjust according to the air quality, and there is a light indicator letting you know how it accesses the value. You can also set it manually, with three fan speeds, and wireless capabilities.”

Kmill

1 / 3

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 highly rated Blueair app

  • Effortlessly take control of your air

    Pick your fan speed, let auto or night mode take over & keep settings secure with display lock.

  • Custom Schedules to Fit Your Lifestyle

    Set your preferred times for enhanced air purification, so you can wake up to fresh air, keep your home clean during peak hours, and save energy when you're away.

  • RealTrack Technology®

    Tracks your filter lifetime based on pollutant levels and alerts you when it’s time to replace your filter.

  • Free and fast shipping

  • 30 day home trial

  • Extended warranty

FAQ

What pollutants does the Blue Pure 511i Max 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 511i Max?

To achieve maximum performance we recommend placing your Blue Pure 511i Max in a room around 237 ft² room so your air purifier can clean the air at the AHAM recommendation of 4 times every 12.5 minutes. The Blue Pure 511i Max will clean a 569 ft² space in 30 minutes, and 1,138 ft² in 1 hour.

What are the noise levels of the Blue Pure 511i Max?

Operates quieter than a whisper on low at 19 db and is no louder than 42 dB on high fan speed.

How often do I need to change the filters?

Your filter will last up to 9 months thanks to our proprietary RealTrack algorithm that accurately calculates the remaining filter lifetime based on fan speed, usage time and pollution levels.

When it's time to replace the filter, the filter replacement LED on the interface will turn red to remind you. Alternatively, connect to the Blueair app to receive an alert and easily re-order at the touch of a button.

What is the warranty for the Blue Pure 511i Max?

Register your product to extend the 1-year warranty to a 3-year warranty.

Blue Pure 511i Max

Technical Specifications

  • Dimensions(HxWxD)

    14.5” x 9.3” x 9.3”

  • Product Weight

    4.2 lb

  • Energy Consumption

    17 W

  • Sound level

    19-48 db

  • Air outlet

    Top

  • Recommended room size

    237 ft²

  • Air changes per hour (ACH)

    4.8

  • Clean air delivery rate (CADR)

    Pollen 174 cfm
    Dust 159 cfm
    Smoke 153 cfm

  • Number of filters

    1

  • Speed control options

    1 - 2 - 3 - 4 - Auto - Night

Product reviews from Blueair

Reviews collected on the original Blueair website.

4.6
Rated 4.6 out of 5 stars
Based on 2,198 reviews
5
Rated out of 5 stars
1.8k
4
Rated out of 5 stars
159
3
Rated out of 5 stars
78
2
Rated out of 5 stars
46
1
Rated out of 5 stars
134
88%would recommend these products
2,198 reviews
Sort
  • CG
    Caren G.
    Verified Buyer
    16 hours ago
    Blue Pure 311i Max
    Reviewing
    Blue Pure 311i Max
    Rated 5 out of 5 stars
    Great new Purchase

    This brand was recommended by a good friend. We are so happy we followed their advice. This is a great unit and easy to use.

    Was this helpful?
  • JG
    Jack G. L.
    Verified Buyer
    Yesterday
    Blue Pure 211i Max
    Reviewing
    Blue Pure 211i Max
    Rated 5 out of 5 stars
    Clean Air

    In what has become an annual event of fighting wildfire smoke, it is nice to have clean bedroom air. Quiet, wireless, adjustable, even able to control the display. A winner.

    Was this helpful?
  • PR
    Peter R.
    Verified Buyer
    Yesterday
    Blue Pure 311i+ Max
    Reviewing
    Blue Pure 311i+ Max
    Rated 5 out of 5 stars
    Best Quality Air Purifier

    I have allergies and it’s smoky here - these machines keep the air in our house clean and fresh. Very happy with the quality!

    Was this helpful?
  • MA
    Maria A.
    Verified Buyer
    Yesterday
    Blue Pure 511i Max
    Reviewing
    Blue Pure 511i Max
    Rated 5 out of 5 stars
    Blue Pure 511i Max

    This product is great! I can really notice the difference

    Was this helpful?
  • CE
    Carole E.
    Verified Buyer
    2 days ago
    Blue Pure 311i Max
    Reviewing
    Blue Pure 311i Max
    Rated 5 out of 5 stars
    Blueair

    Works just fine

    Was this helpful?
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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.

⁵AllergenBlock 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.

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