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Head to head · Air Quality

Blue Pure 211i Max Smart Air Purifier for Large vs Blue Pure 511i Max Smart Air Purifier for

Ravvy scores Blue Pure 211i Max Smart Air Purifier for Large at 93.39 and Blue Pure 511i Max Smart Air Purifier for at 89.44. Blue Pure 211i Max Smart Air Purifier for Large takes the overall pick, best for large open-concept living areas and pet owners needing high airflow..

Ravvy pick

BLUEAIR Blue Pure 211i Max Smart Air Purifier for Large Rooms up to 3,235 Sq Ft, HEPASilent Air Cleaner for Pets, Allergies, Smoke & Dust, WiFi Air Purifier with Auto Mode, Quiet Air Purifier for Home
93.4

$279

This is a premier choice for owners of large open-plan homes who prioritize high-volume air purification and smart monitoring, provided they are willing to pay a premium for proprietary replacement filters.

BLUEAIR Blue Pure 511i Max Smart Air Purifier for Bedroom & Small Rooms up to 1,138 Sq Ft, HEPASilent Air Cleaner for Pets, Allergies, Smoke & Dust, Quiet WiFi Air Purifier with Auto Mode White/ Slate
89.4

$119

Buy this if you need a near silent, smart air cleaner for a bedroom and can overlook the slightly higher cost of proprietary replacement filters.

How they score

FactorBlue Pure 211i Max Smart Air Purifier for LargeBlue Pure 511i Max Smart Air Purifier for
Coverage Area98.2–
Value for Money74–
Acoustic Comfort91.5–
Smart Integration89–
Design and Aesthetics86.5–
Filtration Efficiency9594.2
Compactness–96
Noise Level–98
Operating Cost–72
Smart Features–91.5

Blue Pure 211i Max Smart Air Purifier for Large

What owners praise

  • Exceptionally quiet operation at 23 decibels on low
  • 360 degree air intake allows for flexible room placement
  • Smart app integration with real time air quality monitoring
  • High CADR rating suitable for very large open spaces
  • Washable pre-filters extend the life of the main filter

What to know first

  • Proprietary filters can be more expensive than generic brands
  • Larger footprint takes up more floor space than tower models
  • Smart features require a stable 2.4GHz WiFi connection

Skip it if budget-conscious users seeking low long-term maintenance costs

Blue Pure 511i Max Smart Air Purifier for

What owners praise

  • Extremely quiet 19 decibel operation
  • Smart app integration with air quality monitoring
  • HEPASilent tech captures particles down to 0.1 microns
  • Compact and lightweight 3 pound design
  • Washable fabric pre filter prolongs main filter life

What to know first

  • Proprietary replacement filters can be expensive
  • Effective CADR is limited to smaller rooms for peak performance
  • Simplified onboard controls rely heavily on the app

Skip it if large open plan living rooms or high ceiling basements

Specs side by side

SpecBlue Pure 211i Max Smart Air Purifier for LargeBlue Pure 511i Max Smart Air Purifier for
UPC689122023045689122026619
ASINB0BN2MGV5HB08KPJ76RR
ColorLight Grey (Wifi)White/ Slate
Wattage46 watts20 watts
Brand NameBLUEAIRBLUEAIR
Floor Area3048 square_feet526 square_feet
Unit Count1 Count1 Count
Filter TypeActivated CarbonActivated Carbon
Item Weight16 pounds2.8 pounds
Noise Level23 db48 db
Part Number109556111178
Filter ClassHEPASilentHEPA Activated Carbon

Other options in this category

WINIX 5530 Air Purifier (New Generation of 5500-2 with App Control) for Home Large Room Up to 1882 Ft² in 1 Hr, True HEPA, High Deodorization Carbon Filter and Auto Mode, Captures Pet Allergies, Smoke
93.7

Best for tech-savvy homeowners and pet owners in large open-plan living spaces

  • True HEPA 0.01 micron filtration
  • AHAM Verified performance
  • Smart App and Auto Mode
$180
WINIX 5510 Air Purifier (New Generation of 5500-2 with App Support) for Home Large Room Up to 1881 Ft² in 1 Hr, True HEPA, High Deodorization Carbon Filter and Auto Mode, Captures Pet Allergies, Smoke
93.7

Best for large open concept living spaces and homes with multiple pets.

  • 1881 sq ft coverage per hour
  • True HEPA 99.99 percent efficiency
  • Smart App and Voice Control
$180