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Blueair · Air purifiers

Blueair Blue Pure 311i Max

Smart air purifier with HEPASilent dual filtration technology, cleaning up to 929 sq ft in 30 minutes, 23dB whisper quiet operation, and Blueair app control.

$229List price

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Compare with another product →Explore the specs
CADR
250 CFM (Smoke), 250 CFM (Dust), 250 CFM (Pollen)
Coverage area
387 sq ft (4.8 air changes/hr) / 929 sq ft (2 air changes/hr)

A closer look.

Reasons to choose it

  • HEPASilent dual filtration combines electrostatic and mechanical filtration for faster airflow at lower noise
  • Cleans up to 387 sq ft in 12.5 minutes (4.8 ACH) / up to 929 sq ft in 30 minutes (2 ACH)
  • Ultra-quiet 23dB Night Mode with Energy Star certified low electricity draw

Worth considering

  • Fabric pre-filter covers the exterior and requires periodic vacuuming/washing
  • Filter replacements needed every 6 to 9 months

Put it next to your other option.

12 published comparisons feature this product.

Choose another product →
Air purifiers11 differences

Alen BreatheSmart 75i Large Room Air Purifier

$749

Blueair Blue Pure 311i Max

$229

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Air purifiers11 differences

Blueair Blue Pure 211+ Auto

$339

Blueair Blue Pure 311i Max

$229

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Air purifiers11 differences

Blueair Blue Pure 311i Max

$229

Coway Airmega 250

$399

Compare the differences
Air purifiers11 differences

Blueair Protect 7470i

$649

Blueair Blue Pure 311i Max

$229

Compare the differences

Full specifications

Performance

CADR
250 CFM (Smoke), 250 CFM (Dust), 250 CFM (Pollen)
Room size
Medium to large bedrooms, living rooms, and open offices up to 387 sq ft (4.8 ACH) / 929 sq ft (2 ACH)
Coverage area
387 sq ft (4.8 air changes/hr) / 929 sq ft (2 air changes/hr)

Filters

Filter types
HEPASilent Main Particle + Carbon filter with customizable machine-washable fabric pre-filter
Filter life
6 to 9 months (tracked by RealTrack algorithm in app)

Usability & Smart

Noise levels
23 dB (Night mode) – 50 dB (Max boost)
Energy consumption
38 W max power consumption (Energy Star Most Efficient)
Smart features
Blueair App (iOS/Android), voice control with Amazon Alexa and Google Assistant, geofencing Welcome Home feature
Air quality sensors
Laser particle sensor with 5-color LED air quality indicator ring (PM1, PM2.5, PM10)

Design & Ownership

Weight
7.8 lb (3.5 kg)
Warranty
2 years limited warranty (extendable to 3 years with product registration)
Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.Official Blueair Blue Pure 311i Max spec sheet (opens in a new tab)

Catalog snapshot: September 1, 2026. Published specifications, not independent lab tests.

View the official source ↗

Keep your options open

Also worth a look.

A few common questions.

How much does Blueair Blue Pure 311i Max cost?

Blueair Blue Pure 311i Max lists at $229 (manufacturer list price snapshot as of 2026-09-01). Retail prices vary by merchant and this is not a live quote.

What are Blueair Blue Pure 311i Max’s key specs?

Key specifications for Blueair Blue Pure 311i Max include cadr (250 CFM (Smoke), 250 CFM (Dust), 250 CFM (Pollen)) and coverage area (387 sq ft (4.8 air changes/hr) / 929 sq ft (2 air changes/hr)).

What does Blueair Blue Pure 311i Max compare against?

Blueair Blue Pure 311i Max is compared head to head against Alen BreatheSmart 75i Large Room Air Purifier vs Blueair Blue Pure 311i Max, Blueair Blue Pure 211+ Auto vs Blueair Blue Pure 311i Max, Blueair Blue Pure 311i Max vs Coway Airmega 250, Blueair Protect 7470i vs Blueair Blue Pure 311i Max, Coway Airmega 400 vs Blueair Blue Pure 311i Max, and Coway Airmega AP-1512HH Mighty vs Blueair Blue Pure 311i Max.