Levoit Classic 300S vs Levoit OasisMist 450S
Cool mist only with a bigger tank, or warm and cool with less run time.
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The Levoit Classic 300S and OasisMist 450S are two Levoit ultrasonic humidifiers for bedrooms and living rooms. This page is based on manufacturer-published specifications and manuals plus aggregated owner reviews; we did not test the products ourselves.
Short answer
Choose the Classic 300S for a 6 L tank, up to 60 h run time and 26W power. Choose the OasisMist 450S for warm mist (up to 550 mL/h).
Check Levoit Classic 300S price (opens in a new tab)Check Levoit OasisMist 450S price (opens in a new tab)
Levoit Classic 300S vs Levoit OasisMist 450S: specs side by side
| Spec | Levoit Classic 300S | Levoit OasisMist 450S |
|---|---|---|
| Tank | 6 L | 4.5 L |
| Mist | Cool | Warm and cool |
| Max output | 300 mL/h | 300 mL/h cool / 550 mL/h warm |
| Rated room | 215–505 ft² | 215–430 ft² |
| Max run time | Up to 60 h (low) | Up to 45 h (low) |
| Rated power | 26W | 280W (warm) |
Pros and cons
Levoit Classic 300S: pros
- Bigger tank
- Longer run time
- Low power
Levoit Classic 300S: cons
- Cool mist only
Levoit OasisMist 450S: pros
- Warm mist
- Quiet low cool mode
Levoit OasisMist 450S: cons
- 280W in warm mode
- Smaller tank
Who should buy which
Warm mist is the only reason to step to the 450S.
Choose the Levoit Classic 300S if…
- You want long run times
- You care about energy use
Choose the Levoit OasisMist 450S if…
- You want warm mist in winter
How we compared
We compared manufacturer-published specifications. See how we research.
Frequently asked questions
Which uses less power?
The Classic 300S, at 26W vs 280W in warm mode.
Did you test it?
No. This page uses manufacturer specifications and aggregated owner reviews. See how we research.
Sources
Specifications were checked against the manufacturer pages, manuals and spec sheets below in October 2026. Makers revise specs and sell regional variants, so confirm the exact model number before you buy. We do not list prices because they change daily; use the retailer link to see the current price.
Keep reading
Levoit Classic 300S review
A 6 L top-fill cool-mist humidifier with app control and an auto mode that holds a humidity target.
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