Blueair Blue Pure 311i Max
Smart air purifier · $229.00 · price checked 2026-08-24 · editorial score 83/100
Spec sheet
| Room size | 387 ft² at 4.8 ACH |
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| CADR ✓₂ | 250 cfm ✓₂ |
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| Ozone status ✓₂ | CARB-certified (Electronic) — list entry Blue Pure 311i Max, model code 3332111100, certified 2023-03-09, approval G-23-050; Blueair's product page makes no additional ozone statement. |
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| Filter type | HEPASilent (Blueair) |
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| Filter stages | Washable fabric pre-filter, Particle+carbon filter |
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| Noise | 23–50 dB |
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| Sensors | PM2.5/air-quality |
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| Auto mode | Yes |
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| App / ecosystem | Blueair app |
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| Voice | Alexa, Google Assistant |
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| Humidifier combo | No |
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Offer
$229.00
Price checked 2026-08-24
In Stock
Buy link unavailable
Link withheld pending verified Associates account (compliance fail-closed).
Scraped from the live listing on 2026-08-24; point-in-time price, not an offer.
CADR — Clean Air Delivery Rate (dual-sourced)
250 cfm
- Air Purifier First review: “A very large CADR of 250 CFM (425 m³/h) makes the Blueair 311i Max ideal for rooms up to 387 sq.”
- FindMyPurifier review: “quietly delivers a verified 250 CFM (Cubic Feet per Minute) CADR (Clean Air Delivery Rate), enough for ~375 ft² at the recommended 5 ACH”
Ozone emission status (dual-sourced)
CARB-certified (Electronic) — list entry Blue Pure 311i Max, model code 3332111100, certified 2023-03-09, approval G-23-050; Blueair's product page makes no additional ozone statement.
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Independent comparison. Prices are point-in-time scrapes from Amazon.com listings, not offers. CADR figures render only where two independent sources agree; ozone status is checked against the California Air Resources Board certified-device list. No health claims beyond manufacturer documentation.