Our Verdict
Blueair Blue Pure 211i Max Wins

It offers superior CADR Smoke (406.4 vs 122.88) and significantly larger AHAM coverage (635 sq ft vs 192 sq ft). Choose Winix for smaller rooms valuing 0.01 micron particle capture and a carbon filter for odors.
Bottom Line: Blueair Blue Pure 211i Max is the better choice. It offers superior CADR Smoke (406.
Key Differences
The most significant spec differences at a glance
Cadr Smoke
231% moreCoverage Sq Ft
231% moreAdvantages
Where each product wins
BLUEAIR
- Cadr Smoke: 231% higher (406.4 vs 122.88)
- Coverage Sq Ft: 231% higher (635 vs 192.0)
Who Should Buy Which?
Find the right product for your needs
Buy BLUEAIR if...
BLUEAIR Air Purifiers for
If you need robust air purification for genuinely large spaces, the Blueair Blue Pure 211i Max is for you. Ideal for homeowners with open-concept living, pets, or significant allergy concerns, it prioritizes performance. With an AHAM verified coverage of 635 sq ft, a CADR Smoke of 406.4, and a remarkably quiet 23 dB minimum noise, this purifier ensures superior air quality. You value real-time monitoring and energy efficiency, and are willing to invest more for expansive, effective coverage and quiet operation in your biggest rooms.
Buy Winix if...
WINIX 5510 Air Purifier
The Winix 5510 Air Purifier is best for budget-conscious buyers needing effective air cleaning for smaller to medium-sized rooms, up to an AHAM verified 192 sq ft. It's ideal if you prioritize strong odor removal from pets or cooking, thanks to its carbon filter, and appreciate easy maintenance with a washable pre-filter. This unit offers good value for those seeking reliable True HEPA filtration and smart features like an auto mode for daily use in bedrooms, home offices, or dorms, without the need for extensive large-room coverage.
Spec Comparison
9 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $320 | $222 |
| Rating | 4.5(12.5k) | 4.6(30.6k) |
| Cadr Smoke | 406.4 | 122.88 |
| Coverage Sq Ft | 635 | 192 |
| Noise Level db Min | 23 dB | — |
| Energy Star | Yes | — |
| Filter Type | True HEPA | True HEPA |
| Smart Sensor | Yes | Yes |
| WiFi | Yes | Yes |
| Filter Life Months | 6 | — |
| Noise Level db Max | 53 dB | — |
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Pros & Cons
Quick overview of strengths and weaknesses
BLUEAIR Air Purifiers
- Cleans 3048 sq ft in one hour for large spaces.
- Removes 99.97% of particles down to 0.1 microns.
- Operates quietly, down to 23 dB at lowest setting.
- Real-time PM1, PM2.5, PM10 air quality monitoring.
- Filter replacement required every 6-9 months.
- Operation limited to North America 110-120V.
- Maximum noise output reaches 53 dB.
Winix 5510 Air
- Cleans 1881 sq ft in 1 hour for quick air turnover.
- True HEPA captures 99.99% of 0.01 micron particles.
- Washable pre-filter extends main filter lifespan.
- Carbon filter reduces VOCs and common household odors.
- AHAM verified effective coverage is only 192 sq ft.
- CADR smoke of 122.88 is low for large room claims.
Frequently Asked Questions
Common questions about this comparison
Which air purifier is better suited for large rooms?
The Blueair Blue Pure 211i Max is superior for large rooms, covering 635 sq ft effectively with a CADR Smoke of 406.4. The Winix 5510 only covers 192 sq ft effectively, despite its marketing claims.
What's the main difference in their air cleaning performance?
The Blueair has a CADR Smoke of 406.4 and covers 635 sq ft, while the Winix has a CADR Smoke of 122.88 and covers 192 sq ft. Blueair is more powerful for air purification in larger spaces.
Which product offers a quieter operation?
The Blueair Blue Pure 211i Max operates as low as 23 dB, making it very quiet on its lowest setting. The Winix 5510 does not specify its minimum noise level, but Blueair explicitly states its low noise output.
Should I consider the Winix 5510 despite its lower AHAM verified coverage?
Yes, if your room is smaller than 192 sq ft. The Winix 5510 also captures smaller particles (0.01 microns vs 0.1 microns for Blueair) and includes a carbon filter for VOCs and odors, which could be beneficial for specific needs.
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