BLUEAIR Blue Pure 211i Max vs BLUEAIR Blue Pure 311i Max
Side-by-side comparison based on published product information. Check Amazon for current price and availability.
How we evaluate products
We compare published manufacturer specifications, manuals, support policies, and relevant public guidance. We do not present unpublished laboratory or in-home measurements as our own testing.
Features and services can change, so confirm current details with the manufacturer before buying. Affiliate commissions do not determine our editorial criteria.
In a nutshell
BLUEAIR Blue Pure 211i Max vs BLUEAIR Blue Pure 311i Max: two AirPurify picks compared across 9 published specifications. Use the feature table below to match published specifications to your room, filtration, and noise requirements. We do not assign an overall score without retained independent test evidence.
Key facts
- CADR:
- 435 / 453 / 450 CFM (Smoke / Dust / Pollen, AHAM Verifide) vs 283 / 314 / 365 CFM (Smoke / Dust / Pollen, AHAM Verifide)
- Coverage:
- 674 sq ft (4.8 ACH) vs 439 sq ft (4.8 ACH)
- Noise level:
- 23-53 dB vs 23-50 dB
- Power:
- 46 W vs 32 W
Key takeaways
- BLUEAIR Blue Pure 211i Max — HEPASilent dual filtration moves a large volume of air for very low power draw
- BLUEAIR Blue Pure 311i Max — HEPASilent dual filtration moves a lot of air for very low power draw
AirPurify· Updated July 31, 2026· How we evaluate products
BLUEAIR Blue Pure 211i Max
BLUEAIR
Check Amazon for the current price
BLUEAIR Blue Pure 311i Max
BLUEAIR
Check Amazon for the current price
Feature comparison
| Feature | BLUEAIR Blue Pure 211i Max | BLUEAIR Blue Pure 311i Max |
|---|---|---|
| CADR | 435 / 453 / 450 CFM (Smoke / Dust / Pollen, AHAM Verifide) | 283 / 314 / 365 CFM (Smoke / Dust / Pollen, AHAM Verifide) |
| Coverage | 674 sq ft (4.8 ACH) | 439 sq ft (4.8 ACH) |
| Noise level | 23-53 dB | 23-50 dB |
| Power | 46 W | 32 W |
| Filter type | HEPASilent dual filtration; Particle & Carbon main filter + washable fabric pre-filter | HEPASilent dual filtration; Particle & Carbon main filter + washable fabric pre-filter |
| Filter life | 6-9 months (main filter); pre-filter washable | 6-9 months (main filter); pre-filter washable |
| Warranty | 1 year limited; 3 years with product registration | 1 year limited; 3 years with product registration |
| Dimensions | 22.7 x 14.4 x 14.4 in (H x W x D) | 19 x 12.5 x 12.5 in (H x W x D) |
| Weight | 16.2 lbs | 7.8 lbs |