| Specification | Coway 250S | Winix HR900 |
|---|---|---|
| Cadr (clean Air Delivery Rate) | ||
| Dust (cfm) | 261.2 | 194 |
| Smoke (cfm) | 248.5 | 194 |
| Pollen (cfm) | 230.1 | 194 |
| Physical | ||
| Width (inch) | 18.5 | 9.6 |
| Weight (lbs) | 20.5 | 18.7 |
| Lenth (inch) | 8.3 | 16.3 |
| Height (inch) | 19.7 | 23.6 |
| General | ||
| Number Of Cleaning Stages | 3 | 5 |
| Number Of Air Filters | 3 | 3 |
| Filtered Or Filterless | Filtered | Filtered |
| Noise Level | 22 | 27 |
| Features | ||
| Others | App-Enabled Smart Technology, Compatible With Amazon Alexa | 300 sq. ft Space |
| Remove | Allergen,Bacteria,Dust,Mold,Odor,Smoke,Viruses | |
| Timer | ||
| Hepa Filter | ||
| Portable |