Our verdict
Pick the Coway Airmega 350 if running cost matters and you want the lower price. Pick the Coway Airmega 450 if your room is larger and smoke or fine particles are the worry.
The central trade-off
Rated room size. Coway Airmega 450: 3,285 sq ft; Coway Airmega 350: 2,640 sq ft.
Smoke CADR. Coway Airmega 450: 439 CFM; Coway Airmega 350: 352 CFM.
Power draw. Coway Airmega 350: 62 W; Coway Airmega 450: 72 W.
Filters. Coway Airmega 350: HEPA.
Filters. Coway Airmega 450: HEPA.
Price. When we checked, the Coway Airmega 350 listed for less ($339 against $499); prices move, so check both buttons.
Side by side
| Specification | Coway Airmega 350 | Coway Airmega 450 |
|---|---|---|
| Rated room size | 2,640 sq ft | 3,285 sq ft |
| Smoke CADR | 352 CFM | 439 CFM |
| CADR | Not stated by the maker | Not stated by the maker |
| Quietest setting | Not stated by the maker | Not stated by the maker |
| Noise | 21.5 dB | 23.7 dB |
| Power draw | 62 W | 72 W |
| 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.
Which should you choose?
Choose the Coway Airmega 450 if
- Your room is larger
- Smoke or fine particles are the worry