Main trade-off
LEVOIT Classic 160
Empty-tank shutoff does not measure room humidity. You must adjust or stop output when the room no longer needs it.
Head-to-head
Choose Classic 300S when the room needs humidity-based control while you work or sleep. Its default Auto range is 40-50%, and Sleep keeps Auto active with the lights off. Choose Classic 160 when you will check room humidity and adjust the dial yourself, and its permitted dishwasher parts fit your cleaning routine. The 300S holds 2.4 times as much water, but both still call for daily water changes and cleaning every three days. Neither should leave the surrounding area damp.
Before you choose
If the same bedroom is also your work room, a morning setting can remain on while calls and other tasks take your attention. Classic 160 waits for you to lower the dial or switch it off. Its empty-tank protection cannot tell it that the room has enough moisture. Classic 300S can respond to its local humidity reading, provided Auto Stop remains enabled. Choose 300S when that automatic response solves a real interruption in the day. Choose 160 for attended sessions when checking a separate hygrometer and adjusting output is a routine you will keep.
What this is based on
A bedroom used for work plus interrupted attention, crossed with manual output, empty-tank protection and humidity-based Auto. Neither sensor accuracy nor automatic protection against every damp patch is assumed.
Main trade-off
Empty-tank shutoff does not measure room humidity. You must adjust or stop output when the room no longer needs it.
Main trade-off
No dishwasher parts. Custom target changes need VeSync, and disabling Auto Stop leaves low mist running at the target.

LEVOIT Classic 160 vs Classic 300S for a busy bedroom routine. Compare humidity control, dishwasher limits and what the larger tank changes between refills.
Both are cool-mist LEVOIT models for the same bedroom buying shortlist. The 300S adds humidity-based operation and a larger reserve, while the smaller 160 has a different cleaning route. The decision is whether unattended output adjustment or fewer hand-washed removable parts matters more.
Winner by situation
300S responds to humidity in Auto. Keep Auto Stop enabled and monitor for dampness.
160 permits specified removable parts below its temperature limit. 300S permits none.
300S Sleep preserves Auto. The 160 still needs manual output decisions.
Both manuals call for daily water changes.
What matters in practice
If the same bedroom is also your work room, a morning setting can remain on while calls and other tasks take your attention. Classic 160 waits for you to lower the dial or switch it off. Its empty-tank protection cannot tell it that the room has enough moisture. Classic 300S can respond to its local humidity reading, provided Auto Stop remains enabled. Choose 300S when that automatic response solves a real interruption in the day. Choose 160 for attended sessions when checking a separate hygrometer and adjusting output is a routine you will keep.
A bedroom used for work plus interrupted attention, crossed with manual output, empty-tank protection and humidity-based Auto. Neither sensor accuracy nor automatic protection against every damp patch is assumed.
Someone willing to check a dial may still dislike soaking and brushing several parts every few days. Classic 160 permits specified wet components in a suitable dishwasher below 158 F / 70 C, while 300S permits none. That can make 160 the more practical purchase in a home with an appropriate cycle. It is not a promise that the whole appliance goes into the evening load. The powered base remains outside, and the manual directs owners to support for detailed dishwasher instructions. If the available cycle does not meet those conditions, this advantage disappears and both leave manual work.
Tolerance for daily adjustment versus tolerance for recurring hand cleaning, crossed with exact dishwasher permissions. Cycle compatibility and remaining base care bound the recommendation.
Classic 300S holds 2.4 times the water of the 2.5 L Classic 160, but their documented refill motions differ. The 160 diagram shows a pitcher filling the tank on its base. The 300S sequence removes its tank before filling the upright opening. If taking a filled tank from the sink is the recurring inconvenience, the smaller model has a useful advantage that capacity alone hides. Choose 300S for its control behavior or needed reserve, with that handling accepted. Both still require daily water changes and three-day cleaning, so neither refill route removes the emptying job.
A sink separate from the appliance plus a preference to avoid carrying a filled vessel, crossed with exact refill diagrams and capacities. 6 / 2.5 = 2.4 describes reserve only, not runtime or a verified carried weight.

LEVOIT, LUH-A251-WUS
Use the simple dial for attended sessions and check humidity separately.
LEVOIT, Classic 300S
Let Auto respond to changing humidity instead of returning to a manual dial.
Meaningful differences
| What changes | LEVOIT Classic 160 | LEVOIT Classic 300S | Why it matters |
|---|---|---|---|
| A room that needs less output later | Manual dial, with low-water shutoff only. | Auto adjusts output around a default 40-50% range and can stop at target. | 300S can react while you are occupied. A dry tank sensor on 160 cannot perform that job. |
| Finish the cleanup | Specified removable parts can use a dishwasher below 158 F / 70 C. Base excluded. | No part may go in the dishwasher. | The smaller appliance offers a partial machine-wash route, with hand care still required. |
| Store water between checks | 2.5 L capacity. Daily water change and cleaning every three days. | 6 L capacity. Daily water change and cleaning every three days. | 6 divided by 2.5 is 2.4 times the reserve, without a matching extension to water-care intervals. |
| Add water where it stands | Exact US refill diagram shows a pitcher filling the tank on its base. | Manual filling sequence removes the tank from the base, then fills through its upright opening. | The smaller tank has the documented in-place route. Top-fill alone does not establish that permission. |
| Change settings in the dark | Output remains a manual-dial decision. | Sleep selects Auto with display and night light off. Custom target uses the app. | The 300S can preserve its humidity response when the screen goes dark. |
What you give up
Recommendation switch
Choose LEVOIT Classic 160. Classic 160 trades automatic control for a simpler dial and partial dishwasher care.
Choose LEVOIT Classic 300S. Classic 300S fits that need, with manual cleaning and app-only custom targets accepted.
What matters in practice
The larger smart model reduces output checks, but its wet parts cannot share the smaller model’s dishwasher routine.
What the facts say
Useful conclusions from the current humidifiers comparison, followed by the checked facts used to reach them.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| LEVOIT Classic 160 |
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| LEVOIT Classic 300S |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

Use the simple dial for attended sessions and check humidity separately.
Put only the permitted removable parts through a suitable dishwasher cycle below 158 F / 70 C.
See price & reviews on AmazonLet Auto respond to changing humidity instead of returning to a manual dial.
Keep humidity-based operation in Sleep mode, with Auto Stop enabled and the sensor clear.
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