Our verdict
Pick the Coway Airmega 100 if it is the cheaper of the two on the day you buy. Pick the Winix A230 if you want the lower price.
The central trade-off
Rated room size. Winix A230 Air Purifier states 230 square feet; the other's maker page doesn't.
Power draw. Coway Airmega 100 states 25 W; the other's maker page doesn't.
Filters. Coway Airmega 100: HEPA.
Filters. Winix A230 Air Purifier: HEPA.
Price. When we checked, the Winix A230 Air Purifier listed for less ($100 against $130); prices move, so check both buttons.
Side by side
| Specification | Coway Airmega 100 | Winix A230 Air Purifier |
|---|---|---|
| Rated room size | Not stated by the maker | 230 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 | 20 dB | 27 db |
| Power draw | 25 W | Not stated by the maker |
| 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.