Blueair Blue Pure 211i Max vs Coway Airmega 450
The two highest smoke CADRs in our smoke list.
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Best for: 435 CFM smoke CADR from 46 W, with a SmokeBlock filter option
Check price at AmazonBest for: 439 CFM smoke with an Intense Smoke+ filter option
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | Blueair Blue Pure 211i Max | Coway Airmega 450 | Weight |
|---|---|---|---|
| Smoke CADRAHAM's smoke CADR measures how fast smoke particles are removed. IQAir, Shark, Honeywell and Winix's 9800 don't publish one; those score at the lowest published value in the category. | 435 CFM | 439 CFM | 40% |
| Carbon/odor filter lifeHow long the maker rates the carbon or gas stage, which saturates faster than HEPA. Rabbit Air (12 h/day) and IQAir (10 h/day) state their usage basis. | 9 months | 12 months | 20% |
| Smoke or VOC filter offeredYes when the maker sells a smoke-, toxin- or VOC-specific filter for this model (e.g. Coway Intense Smoke+, Levoit Smoke Remover, Blueair SmokeBlock, Winix SmokeGuard, Rabbit Air Toxin Absorber), or when gas filtration is the main filter (IQAir). | Yes | Yes | 15% |
| CADR per wattComputed by us: smoke CADR divided by rated power. During smoke events these run on high for days. | 9.5 CFM/W | 6.1 CFM/W | 15% |
| Loudest settingYou'll run it on high during smoke events, so top-speed noise matters. | 53 dB | 57.7 dB | 10% |
| CADR (smoke / dust / pollen) | 435 / 452 / 450 | 439 / 445 / 450 | info |
| Recommended room | 674 ft² (4.8 ACH) | Not listed | info |
| Filter | Particle + carbon; SmokeBlock option (2x more activated carbon) | Not listed | info |
| Filter life | Up to 9 months (RealTrack) | 1+ year | info |
| Noise | 23–53 dB | 23.6–57.7 dB(A) | info |
| Power | 46 W | 72 W | info |
| Weight | 16.2 lb | 24.9 lb | info |
| Coverage | Not listed | 3,285 ft² at 1 air change/hr; 1,643 ft² at 2 | info |
| Filter options | Not listed | 3-in-1 Fresh Starter+, Allergen+, Intense Smoke+ (HEPA with VOC absorber + activated carbon) | info |
| AirPick score | 7.8/10 | 7.0/10 | 100% |
Where each one comes out ahead
Blueair Blue Pure 211i Max
Better published figure on: CADR per watt, Loudest setting.
What we like
- 9.5 CFM per watt
- SmokeBlock filter option
Watch out for
- 9-month filter
Coway Airmega 450
Better published figure on: Smoke CADR, Carbon/odor filter life.
What we like
- 439 CFM smoke CADR
- Dedicated Intense Smoke+ filter
Watch out for
- 57.7 dB on high
Verdict
Nearly equal smoke CADR (439 vs 435). Blueair uses 46 vs 72 W and is quieter on high (53 vs 57.7 dB). Coway's filter lasts 1+ year vs 9 months.
- Blueair Blue Pure 211i Max: Blueair: Blue Pure 211i Max
- Coway Airmega 450: Coway: Airmega 450