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Blueair Blue Pure 211i Max vs Blue Pure 511i Max

Which Air Purifier Is Better?

    Top
    Main Differences
    Design
      BodyDisplay And ControlFilter Configuration
    Performance
      Particle Filtration RateLow-Noise Particle Filtration RateNoise
    Comments

Products

Blueair Blue Pure 211i Max 
early access
Blueair Blue Pure 511i Max

Tested using Methodology v1.2

Updated Jun 04, 2026 08:31 PM

This review is in Early access

Unavailable
Missing store

Tested using Methodology v1.2

Updated Jun 05, 2026 04:23 PM

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Blueair Blue Pure 211i Max Picture

Track

Blueair Blue Pure 511i Max Picture

Track

Activated Carbon
Sheet
Activated Carbon
Sheet

Our Verdict

Blueair Blue Pure 211i Max

Blueair Blue Pure 511i Max

Full comparison details regarding individual product score sets can be found in the section below

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Variants

  • Blue Pure 511i Max (Gray)

Review

See Blueair Blue Pure 211i Max Review
See Blueair Blue Pure 511i Max Review
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Check Price

 
Gray
Blue Pure 511i Max
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Gray
Blue Pure 511i Max
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Gray
Blue Pure 511i Max
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Gray
Blue Pure 511i Max
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Gray
Blue Pure 511i Max
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Main Differences for
Pets

Threshold 

0.10

Pets 
 

0.0
7.4
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Full Comparison

Design

Body  

Air Purifier Design Photo  

Blueair Blue Pure 211i Max Air Purifier Design Photo Sample

SAMPLE

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for pictures & test results

Compare High-Res
Blueair Blue Pure 511i Max Air Purifier Design Photo

Height  

Lock" (Lock cm)
14.6" (37.1 cm)

Width  

Lock" (Lock cm)
9.4" (23.9 cm)

Depth  

Lock" (Lock cm)
9.4" (23.9 cm)

Weight 
 

Lock lbs (Lock kg)
4.4 lbs (2.0 kg)

Power Cord Length  

Lock" (Lock cm)
73.4" (186.5 cm)

Wheels 
 

Locked
No

Display And Control 
 

Main Controls  

Blueair Blue Pure 211i Max Main Controls Sample

SAMPLE

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for pictures & test results

Compare High-Res
Blueair Blue Pure 511i Max Main Controls

Alternative Controls  

Blueair Blue Pure 211i Max Alternative Controls Sample

SAMPLE

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for pictures & test results

Compare High-Res
Blueair Blue Pure 511i Max Alternative Controls

Filter Change Indicator 
 

Locked
Yes

Air Quality Sensor Auto Mode 
 

Locked
Yes

Remote Control 
 

Locked
No

App 
 

Locked
Yes

Display On/Off 
 

Locked
Yes

Timer Function 
 

Locked
Yes

Number Of Fan Speeds 
 

Lock
4

Filter Configuration  

Filter Configuration Photo  

Blueair Blue Pure 211i Max Filter Configuration Photo Sample

SAMPLE

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for pictures & test results

Compare High-Res
Blueair Blue Pure 511i Max Filter Configuration Photo

Filter Localization Photo  

Blueair Blue Pure 211i Max Filter Localization Photo Sample

SAMPLE

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Compare High-Res
Blueair Blue Pure 511i Max Filter Localization Photo

Filtration Layers 
 

Locked
3 Stage

Activated Carbon 
 

Locked
Sheet
Performance

Particle Filtration Rate 
 

N/A
7.0

Purification Graph  

Blueair Blue Pure 211i Max Purification Graph Sample

SAMPLE

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 Preview Graph
Blueair Blue Pure 511i Max Purification Graph

Measured PM1.0 CADR 
 

Lock m³/hr (Lock CFM)
255 m³/hr (150 CFM)

Recommended Room Size @ Max Fan Speed 
 

Lock m² (Lock ft²)
21.8 m² (234 ft²)

Low-Noise Particle Filtration Rate 
 

N/A
5.7

Purification Graph @ ≤ 45dBA  

Blueair Blue Pure 211i Max Purification Graph @ ≤ 45dBA Sample

SAMPLE

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for pictures & test results

 Preview Graph
Blueair Blue Pure 511i Max Purification Graph @ ≤ 45dBA

Measured PM1.0 CADR 
 

Lock m³/hr (Lock CFM)
99 m³/hr (59 CFM)

Fan Speed Used 
 

Locked
Speed 2

Recommended Room Size 
 

Lock m² (Lock ft²)
8.5 m² (91 ft²)

Noise 
 

N/A
9.0

Noise Video  

Blueair Blue Pure 211i Max Noise Video Sample

SAMPLE

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for videos & test results

Noise @ Lowest Fan Speed 
 

LockdBA
30.8dBA

Noise @ Highest Fan Speed 
 

LockdBA
53.9dBA

Check Price

 
Gray
Blue Pure 511i Max
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Amazon
 
Gray
Blue Pure 511i Max
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Walmart.com
 
Gray
Blue Pure 511i Max
SEARCH
Lowes.com
 
Gray
Blue Pure 511i Max
SEARCH
HomeDepot.com
 
Gray
Blue Pure 511i Max
SEARCH
BestBuy.com
Back to Top

Blueair Blue Pure 211i Max

Blueair Blue Pure 511i Max

Comments

  1. Comparison
 • Posted 3 days ago

Blueair Blue Pure 211i Max vs Blueair Blue Pure 511i Max: Main Discussion

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