Coway Airmega 400 vs Blueair Air Purifiers for Home Large Room up to 3
Winner Coway Airmega 400 has the higher overall owner score (3.9) in our data.
| Coway Airmega 400 | Blueair Air Purifiers for Home Large Room up to 3 | |
|---|---|---|
| Photo |  | BL |
| Overall | 3.9 | 3.7 |
| Owner sentiment | 4.2 | 4.1 |
| Recommendations | 4.1 | 2.2 |
| Value | 3.0 | 4.0 |
| Owner comments | 11 | 9 |
| Price snapshot | $629.99 (price as of 2026-11-07) | $349.00 (price as of 2026-11-07) |
Specs (shared fields)
| Coway Airmega 400 | Blueair Air Purifiers for Home Large Room up to 3 | |
|---|---|---|
| Power Source | Corded Electric | Corded Electric |
| Control Method | Touch | App |
| Filter Type | HEPA Filter, Active Carbon Filter, Pre-Filter | Activated Carbon |
| Floor Area | 3120 square_feet | 3235 square_feet |
| Noise Level | 22 db | 23 db |
| Particle Retention Size | 0.3 micron | 0.1 micron |
| Controller Type | Touch | Amazon Alexa, Android, Button Control, iOS |
| Wattage | 66 watts | 46 watts |
| Contaminant Filtration Capability | Dust, Odors, Pet Dander, Pollen, Volatile Organic Compounds (VOCs) | Viruses, smoke, pet dander, pollen, mold, dust |
| Special Features | Air Quality Monitor, Eco Mode, Filter Life Indicator, Smart Mode, Timer | Corded |
| Filter Class | MultiFilterManager | HEPASilent |
| Software Update Supported to Date | unknown | unknown |
Where owner praise diverges
Owners praise the Coway Airmega 400 more for nothing distinct, and the Blueair Air Purifiers for Home Large Room up to 3 more for nothing distinct.
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Coway Airmega 400 review · Blueair Air Purifiers for Home Large Room up to 3 review