Classic 300S · Dual 200S · OasisMist 450S — compared by room size, features, and value.
Levoit makes three core humidifier lines: the Classic 300S (top-seller, smart), the Dual 200S (compact bedroom), and the OasisMist 450S (large rooms). All use ultrasonic cool-mist technology. Here's how they compare.
WiFi + Alexa. 6L tank. Auto Mode adjusts output based on humidity sensor. Works 50-hour runtime before refill. Top-rated Levoit humidifier.
Compact ultrasonic humidifier with dual mist outlets. Whisper-quiet at 28 dB. 3L tank. WiFi + App. Perfect for small bedrooms and nurseries.
High-capacity humidifier for large rooms. 4.5L tank with top-fill design. Smart humidity targeting. Best for living rooms, open-plan spaces.
| Spec | Classic 300S | Dual 200S | OasisMist 450S |
|---|---|---|---|
| Tank Capacity | 6L | 3L | 4.5L |
| Max Runtime | 50 hrs | 25 hrs | 45 hrs |
| Coverage | 505 sq ft | 269 sq ft | 505 sq ft |
| WiFi / App | ✔ VeSync | ✔ VeSync | ✔ VeSync |
| Alexa / Google | ✔ Both | Alexa only | ✔ Both |
| Humidity Sensor | ✔ Yes | No | ✔ Yes |
| Top-Fill Tank | No | No | ✔ Yes |
| ASIN | B08P6BFLWK |
B08PJQTCZQ |
B09KWHB33C |
Largest tank, longest runtime, full smart features, humidity sensor. The most versatile option for most homes. Buy if you want set-and-forget automation.
Quietest at 28 dB, compact size, dual nozzles. Best if you sleep light or need it for a nursery or small bedroom. Cheapest of the three.
Top-fill convenience, 45-hour runtime, same coverage as 300S but easier to refill. Good if you hate removing the tank to fill it.
Levoit's air purifiers and humidifiers work well together for full air quality control.
See All Levoit Air Purifiers →