Our verdict
Pick the Coway Airmega 200M if it is the cheaper of the two on the day you buy. Pick the Winix 5510 if your room is larger and running cost matters.
The central trade-off
Rated room size. Winix 5510 Air Purifier: 1881 square feet; Coway Airmega 200M: 361 sq ft.
Power draw. Winix 5510 Air Purifier: 65 watts; Coway Airmega 200M: 82 W.
Filters. Coway Airmega 200M: HEPA.
Filters. Winix 5510 Air Purifier: HEPA.
Price. When we checked, the Winix 5510 Air Purifier listed for less ($180 against $230); prices move, so check both buttons.
Side by side
| Specification | Coway Airmega 200M | Winix 5510 Air Purifier |
|---|---|---|
| Rated room size | 361 sq ft | 1881 square feet |
| Smoke CADR | Not stated by the maker | Not stated by the maker |
| CADR | Not stated by the maker | Not stated by the maker |
| Quietest setting | Not stated by the maker | Not stated by the maker |
| Noise | 24.4 dB | 27 db |
| Power draw | 82 W | 65 watts |
| Filters | HEPA | HEPA |
| Warranty | Not stated by the maker | Not stated by the maker |
Values are the makers' published specifications. "Not stated" means the maker doesn't publish it.