Air Purifier Ranking

Blueair Blue Pure 311 Auto 3.7

#4 of 17 in Large (250–399 CADR) · #9 of 49 overall · All Blueair models

Spec-based ranking. We have not yet logged an independent measurement for this air purifier; its score uses manufacturer specifications and price. How that works.

Price shown is an approximate recent street price and is being verified. Click through for the current price.

Efficient medium-room unit; superseded by the 311i Max.

Amazon · $200Blueair

Specifications

Smoke CADR250 cfm
Dust CADR250 cfm
Pollen CADR250 cfm
AHAM room size388 sq ft
Maker's room size388 sq ft
Max power30 W
Noise (low / high)24 / 50 dB
Filter cost$60
Filter life6 months
Filters per year$120
5-year cost of ownership$800
True HEPAYes
Activated carbon0.2
Auto mode (PM2.5 sensor)Yes
AppNo
Washable prefilterYes
AHAM VerifideYes
Energy StarYes
Weight8.0
Released2021

Score breakdown

Value (25%)
53
Efficiency (10%)
100
Noise (15%)
91
Filter_cost (15%)
34
Certification (10%)
100
Features (10%)
62

Components are normalized 0–100. Weighted total: 68/100 → 3.7 stars. Formula.

Independent measurements

None logged yet. If you know of an independent test of this air purifier, see the reviewers we track.

Compared with its neighbors

#ModelSmoke CADRDustPollenWdB maxFilters/yr$/CADRScore
1Dreo Macro Pro2582602584053$1000.577
2Blueair Blue Pure 311i Max2502502503650$1200.771
3Levoit Core 400S2602422503852$1000.769
4Blueair Blue Pure 311 Auto2502502503050$1200.868
5Coway Airmega 3003003003005752$1100.964
6Coway Airmega 4003503503506652$1301.161
7Coway Airmega 400S3503503506652$1301.360

Head-to-head: Blueair Blue Pure 311 Auto vs Coway Airmega 300 · Dreo Macro Pro vs Blueair Blue Pure 311 Auto · Blueair Blue Pure 311i Max vs Blueair Blue Pure 311 Auto · Levoit Core 400S vs Blueair Blue Pure 311 Auto