Levoit Core 600S
#8 in Large roomsFull review
For big living rooms and open-plan spaces where a mid-size unit can’t keep up. Smaller rooms are better served by the Core 400S.
Amazon $259.97$259.97
The Levoit Core 600S is the better air purifier overall, rated 3.6 to 3.4. The Levoit Core 600S leads on value, auto mode and warranty. The Coway Airmega 350 wins on filter cost. The Levoit Core 600S costs $79.03 less ($259.97 vs $339).
Coway Airmega 350
#11 in Large roomsFull review
For big rooms where you want high certified airflow and low running costs without app features.
Amazon $339$339
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Levoit Core 600S for value ($0.66 per cfm of smoke CADR vs $0.94 per cfm of smoke CADR), auto mode (PM2.5 laser sensor and Wi-Fi app vs PM laser sensor, auto mode) and warranty (2-year warranty vs 1-year warranty).
- Choose the Coway Airmega 350 for filter cost ($79 a year in filters vs $119.98 a year in filters).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large rooms air purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Levoit Core 600S | Coway Airmega 350 |
|---|---|---|
| Overall rating | 3.6/5 | 3.4/5 |
| Value 25% | 82 $0.66 per cfm of smoke CADR | 57 $0.94 per cfm of smoke CADR |
| Filter cost 20% | 70 $119.98 a year in filters | 83 $79 a year in filters |
| Quiet 20% | 33 55 dB at top speed (maker rating) | 35 54.7 dB at top speed (maker rating) |
| Efficiency 15% | 50 6 cfm per watt | 54 6.3 cfm per watt |
| Auto mode 10% | 100 PM2.5 laser sensor and Wi-Fi app | 70 PM laser sensor, auto mode |
| Warranty 10% | 25 2-year warranty | 0 1-year warranty |
Specifications
| Levoit Core 600S | Coway Airmega 350 | |
|---|---|---|
| Performance | ||
| Smoke CADR | 391 cfm | 360 cfm |
| Dust CADR | 398 cfm | 378 cfm |
| Pollen CADR | 436 cfm | 450 cfm |
| PM2.5 CADR | 394 cfm | 369 cfm |
| CADR certified by | AHAM Verifide | ENERGY STAR |
| Room size (AHAM) | 606 sq ft | 558 sq ft |
| Coverage (maker) | 2,933 sq ft | 2,640 sq ft |
| Noise | 26 to 55 dB | 21.5 to 54.7 dB |
| Efficiency | ||
| Efficiency (IEF) | 6 cfm/W | 6.3 cfm/W |
| ENERGY STAR | Yes | Yes |
| Energy use | 378 kWh/year | 344 kWh/year |
| Power at top speed | 66 W | 62 W |
| Filters | ||
| Filter | HEPA | HEPA |
| Activated carbon | Yes | Yes |
| Replacement | Core 600S-P Original Replacement Filter | Airmega 350 Fresh Starter Plus filter |
| Replacement cost | $59.99 every 6 months | $79 every 12 months |
| Yearly filter cost | $119.98/year | $79/year |
| Ionizer | No | No |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | PM2.5 laser | PM laser |
| Auto mode | Yes | Yes |
| Wi-Fi app | Yes | No |
| Fan speeds | 4 | 3 |
| Dimensions | 23.6 x 12.3 x 12.3 in | 23.2 x 12.0 x 12.0 in |
| Weight | 13.7 lb | 17.2 lb |
| Warranty | 2 years | 1 years |