Our verdict
Pick the Winix A230 if you want the lower price. Pick the Winix 5510 if your room is larger.
The central trade-off
Rated room size. Winix 5510 Air Purifier: 1881 square feet; Winix A230 Air Purifier: 230 square feet.
Power draw. Winix 5510 Air Purifier states 65 watts; the other's maker page doesn't.
Filters. Winix A230 Air Purifier: HEPA.
Filters. Winix 5510 Air Purifier: HEPA.
Price. When we checked, the Winix A230 Air Purifier listed for less ($100 against $180); prices move, so check both buttons.
Side by side
| Specification | Winix A230 Air Purifier | Winix 5510 Air Purifier |
|---|---|---|
| Rated room size | 230 square feet | 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 | 27 db | 27 db |
| Power draw | Not stated by the maker | 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.