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Blueair

Blueair Blue Pure 211i Max Air Purifier

A large-room purifier with a 360-degree intake, a washable fabric pre-filter, PM1/PM2.5/PM10 sensing and app control, rated by Blueair at smoke CADR 435 and 674 sq ft.

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Blueair Blue Pure 211i Max in Nordic Fog on a wooden bedroom floor beside curtains and a fringed rug, showing its top controls and fabric pre-filter.
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Photo: Blueair

Key facts

CADR (maker)
435 smoke, 452 dust, 450 pollen (cfm); Blueair notes its CADR and room figures were updated to new DOE standards, so packaging may differ
Room size (maker)
674 sq ft at 4.8 air changes an hour; 1,618 sq ft in 30 minutes; 3,235 sq ft in an hour
Filtration
HEPASilent: washable fabric pre-filter plus one particle and carbon filter, with electrostatic charging; AllergenBlock and SmokeBlock filters sold as options
Sensors
PM1, PM2.5 and PM10; auto mode adjusts the fan
Fan settings
1, 2, 3, 4, Auto and Night
Noise (maker)
23 to 53 dB
Power
46 W

Which version should you buy?

This page covers: Blue Pure 211i Max, standard Nordic Fog, single purifier.

  • 211i Max, Nordic Fog

    This page

    Model: 3613111100

    What differs
    Standard color, with the installed Particle & Carbon filter and fabric pre-filter.
    Best for
    Buyers who want the standard single purifier.
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  • 211i Max, Coastal Beige

    Model: Blue Pure 211i Max

    What differs
    The purifier in Coastal Beige instead of Nordic Fog.
    Best for
    Buyers who prefer a beige finish.

  • 211i Max, Midnight

    Model: Blue Pure 211i Max

    What differs
    Another exterior color of the same purifier family.
    Best for
    Buyers who prefer the dark Midnight finish.

  • 211i Max + SmokeBlock filter

    Model: Blue Pure 211i Max

    What differs
    Adds a SmokeBlock filter alongside the standard Particle & Carbon filter. SmokeBlock uses more activated carbon.
    Best for
    Buyers who want the extra filter for smoke and stronger odors.

  • 211i Max + AllergenBlock filter

    Model: Blue Pure 211i Max

    What differs
    Adds an AllergenBlock filter alongside the standard Particle & Carbon filter.
    Best for
    Buyers who want the extra filter designed for allergens.

Watch out

  • Coastal Beige is a purifier color. Limestone is a separately sold fabric pre-filter color, not another name for Coastal Beige.
  • The single purifier already includes a main filter; a filter bundle adds another filter.
  • A filter subscription sends replacements later. It does not by itself mean a spare filter arrives with the purifier.
  • SmokeBlock and AllergenBlock change the filter package, not the purifier generation.

Why people pick it

  • Smoke CADR 435 per Blueair, sized at 674 sq ft on the 4.8-air-change basis
  • ENERGY STAR certified and rated 46 W
  • Washable fabric pre-filter and PM1/2.5/10 sensing with auto mode

Know before you buy

  • Uses electrostatic charging, so CARB lists it as an electronic air cleaner
  • Blueair's newer CADR figures differ from older packaging and listings
  • Tall unit: 22.7 in high and 16.2 lb

Full specifications

CADR (maker)435 smoke, 452 dust, 450 pollen (cfm); Blueair notes its CADR and room figures were updated to new DOE standards, so packaging may differ
Room size (maker)674 sq ft at 4.8 air changes an hour; 1,618 sq ft in 30 minutes; 3,235 sq ft in an hour
FiltrationHEPASilent: washable fabric pre-filter plus one particle and carbon filter, with electrostatic charging; AllergenBlock and SmokeBlock filters sold as options
SensorsPM1, PM2.5 and PM10; auto mode adjusts the fan
Fan settings1, 2, 3, 4, Auto and Night
Noise (maker)23 to 53 dB
Power46 W
Smart featuresBlueair app: schedules, night mode, indoor and outdoor air readings, Alexa and Google Home
Air outletTop
Dimensions22.7 x 14.4 x 14.4 in (H x W x D)
Weight16.2 lb
CARB (checked Nov 1, 2026)Certified as an electronic air cleaner: Blue Pure 211i Max, model 3613111100, Executive Order G-23-076 (2023)
ENERGY STAR (checked Nov 1, 2026)Certified: Blueair model 3613111100 (listed smoke CADR 443, certified March 2023)

From manufacturer documentation, checked November 2, 2026. Spotted an error? Tell us.

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