3 advanced sensors track your air & automatically adjust
HEPASilent™ technology delivers faster cleaning with less noise
Blue Pure 211i Max
Smart HEPASilent™ air purifier for large rooms & open spaces with fast powerful cleaning that automatically adjusts to your air
- Great for
- Allergens, pets, smoke
- Designed for
- Open concept, kitchens, living rooms
Color: Nordic Fog
Fast & free shipping
30-day returns
Extended warrantyWhy you’ll love it
Big-room cleaning made smarter. Faster, quieter, smarter air purification that keeps your home feeling fresh and more comfortable every day.
- Quickly cleans 674 ft² every 12.5 minutes & 3,235 ft² in 1 hour
- Keeps large living spaces feeling fresh fast
- Automatically adjusts when your air quality changes
- Easy to control from anywhere
Auto Mode keeps cleaning effortless 
Specialized filters for your needs 
Accurate filter lifetime tracking 
Control from anywhere
Features & Technologies
- Particle & Carbon captures everyday particles and light household odors.
- AllergenBlock traps allergens and helps neutralize their irritating properties.
- SmokeBlock uses 2x more activated carbon for smoke, smog and stronger odors.
- Main filter media captures dust, pollen, pet dander and PM2.5.
- Activated carbon helps trap cooking, pet and smoke odors.
- RealTrack™ Technology tracks filter life based on actual use and pollution levels.
- App filter alerts tell you when it’s time for a replacement.
- Easy replacement design keeps routine maintenance simple.
What’s in the box
- Blue Pure 211i Max
- Particle & Carbon filter in the device
- Pre-filter on the device
Tech specs
- Dimensions(HxWxD) 22.7 x 14.4 x 14.4
- Product Weight 16.2
- Energy Consumption 46 W
- Sound Level 23-53 dB
- Air Outlet Top
- Recommended Room Size 674
- Number Of Filters 1
Product Notes
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.
3 advanced sensors track your air & automatically adjust
HEPASilent™ technology delivers faster cleaning with less noise
“The Blue Pure 211i Max aced our tests, and on top of its powerful performance, it stands out for its energy efficiency, quiet operation, user-friendly features, and good looks.”
Wirecutter Best Air Purifiers of 2024
“On its higher setting, it’s terrific at removing dust, pollen, and smoke...CR members found Blueair air purifiers highly reliable and were quite satisfied with their purchase.”
Why choose Blue Pure 211i Max?
Monitors PM 1, 2.5 & 10, a 360° air intake design, ensuring even airflow and more efficient air cleaning & automatically adjusts fan speed based on detected pollutants.
QuietMark certified, the Blue Pure 211i Max is quieter than a whisper on the low setting and no louder than a computer hum on high.
Monitor indoor & outdoor air quality, set custom schedules, turn on night. auto mode or welcome home mode, & control via Alexa or Google Home.
Variety of washable pre-filters designed to seamlessly blend into any home.
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
Choose a fan speed, switch to night mode for undisrupted sleep, or let auto mode adjust for you based on detected pollutants.
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.
Enjoy the convenience of your air purifier turning on as you are approaching your home.
RealTrack technology tracks the filter lifetime based on pollutant levels & usage. When it’s time to replace your filter the app will alert you!
Independently proven performance
Free and fast shipping
30 day home trial
Extended warranty
Technical Specifications
- Dimensions(HxWxD)
- 22.7 x 14.4 x 14.4
- Product Weight
- 16.2 lb
- Energy Consumption
- 46 W
- Sound level
- 23-53 dB
- Air outlet
- Top
- Recommended room size
- 674 sq. ft.
- Air changes per hour (ACH)
- 4.8
- Clean air delivery rate (CADR)
- Pollen 450 cfm Dust 452 cfm Smoke 435 cfm
- Number of filters
- 1
- Speed control options
- 1 - 2 - 3 - 4 - Auto - Night
FAQ
What pollutants does the Blue Pure 211i 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 211i Max?
To achieve maximum performance we recommend placing your Blue Pure 211i Max in a room around 674 ft² room so your air purifier can clean the air at the AHAM recommendation of 4 times every 12.5 minutes. The Blue Pure 211i Max will clean a 1,618 ft² space in 30 minutes, and 3,235 ft² in 1 hour.
What are the noise levels of the Blue Pure 211i Max?
Operates quieter than a whisper on low at 23 db and is no louder than 53 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 211i Max?
Register your product to extend the 1-year warranty to a 3-year warranty.
Does toggling between the different PM levels (PM1, PM2.5, PM10) on the display change the specific types of pollutants that are filtered out of the air?
While many Blueair units come equipped with a PM2.5 sensor, some models, including Blue Pure 211i Max, Protect 70i, or Classic Pro CP7i, have advanced sensors that measure PM1, PM2.5, and PM10 levels for more precise air quality monitoring. However, the display on these models can only show one of these three particulate matter (PM) values at a time due to the size of the screen. The display can toggle between PM1, PM2.5, and PM10 readings to track the levels of different pollutants in their environment. Switching between these indicators does not affect the air purifier's performance or target a specific pollutant size to remove from the air. The air purifier continuously works to remove particles down to 0.1 micron from the air regardless of which PM indicator is displayed.
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