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Head to head · Air Quality

Blue Pure 511i Max Smart Air Purifier for vs Blue Pure 311i Max Smart Air Purifier for

Ravvy scores Blue Pure 511i Max Smart Air Purifier for at 89.44 and Blue Pure 311i Max Smart Air Purifier for at 89.44. Blue Pure 511i Max Smart Air Purifier for takes the overall pick, best for light sleepers and apartment dwellers seeking smart features.

Ravvy pick

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.

BLUEAIR Blue Pure 311i Max Smart Air Purifier for Medium Rooms up to 2,107 Sq Ft HEPASilent Air Cleaner for Pets Allergies Smoke & Dust WiFi Air Purifier with Auto Mode Quiet Air Purifier for Bedroom
89.4

$229

This is a premium choice for light sleepers and design-focused users who want smart automation and low noise at the cost of proprietary, higher-priced replacement filters.

How they score

FactorBlue Pure 511i Max Smart Air Purifier forBlue Pure 311i Max Smart Air Purifier for
Compactness96–
Noise Level98–
Operating Cost72–
Smart Features91.5–
Filtration Efficiency94.295
Acoustic Comfort–98
Energy Efficiency–96
Maintenance Value–72
Smart Connectivity–86.5

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

Blue Pure 311i Max Smart Air Purifier for

What owners praise

  • Extremely low energy consumption at only 7.8 watts
  • QuietMark certified for near-silent operation on low settings
  • Effective 0.1 micron filtration captures smaller particles than standard HEPA
  • Real-time air quality monitoring via a responsive mobile app
  • Washable fabric pre-filters extend the life of the internal carbon filter

What to know first

  • Proprietary filters can be more expensive than generic alternatives
  • App setup may require a 2.4GHz WiFi band for initial connection
  • Lacks a dedicated remote control, relying heavily on the smartphone app

Skip it if budget-conscious shoppers wary of recurring costs

Specs side by side

SpecBlue Pure 511i Max Smart Air Purifier forBlue Pure 311i Max Smart Air Purifier for
UPC689122026619689122023021
ASINB08KPJ76RRB0BN2LZ9JH
ColorWhite/ SlateLight Grey (Wifi)
Wattage20 watts7.8 watts
Brand NameBLUEAIRBLUEAIR
DepartmentAll Ages–
Floor Area526 square_feet1858 square_feet
Unit Count1 Count1 Count
Filter TypeActivated CarbonActivated Carbon
Item Weight2.8 pounds3.5 kg
Noise Level48 db23 db
Part Number111178109538

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