Levoit Smart Humidifier 6.2L
- Floor Area: 536 sq ft
- Capacity: 1.6 gallons
- Runtime: 62 hours
- Operation Mode: Ultrasonic
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A large capacity, app connected humidifier built for whole room coverage and quiet overnight running, with cleaning made easier but not fully dishwasher based.
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ASIN: B0GR99R7XDModel: LUH-N651S-WUSCategory: Humidifiers
Overview
A 6.2 liter top fill humidifier built for bedrooms and larger rooms, rated to cover up to 536 square feet with 320 ml/h output. App and Auto Mode control keep humidity in range without constant adjustment, and the parts most likely to grow buildup come apart for washing.
Levoit pitches this as its next gen cleaning design, and the detachable sink and wide tank opening back that up on paper. The catch buyers should note: only the cover and detachable sink are dishwasher safe, the tank and silencer cover are hand wash only, and hot or sanitizing dishwasher cycles are off limits even for the safe pieces.
- 6.2 liter tank, up to 62 hours of runtime
- Covers up to 536 sq ft
- 26dB quiet operation on low and sleep mode
- Silver ion microbial resistance for up to 28 days
Who it's for
Suited to anyone humidifying a bedroom, nursery, or open living area who wants app control and a set and forget Auto Mode rather than a manual dial. Less useful in a small room, where the 6.2 liter tank and 536 sq ft coverage are more capacity than needed.
Pros and cons
- Auto Mode targets humidity instead of running on a fixed setting
- Up to 62 hours of runtime on one 6.2 liter fill
- Rated at 26dB on low, quiet enough for overnight bedroom use
- Detachable sink design opens up hard to reach corners for cleaning
- Only the cover and detachable sink are dishwasher safe, not the tank
- No dishwasher heated drying or sanitizing cycles allowed even on safe parts
- App and Smart Scene features require the VeSync ecosystem
Performance notes
Auto Mode reads room humidity with a stated plus or minus 5% sensor accuracy and adjusts mist output to hold that level, which is what prevents the over humidification a manual dial can cause. The 320 ml/h output and 6.2 liter tank combine for up to 62 hours between refills at lower settings, and silver ion treatment is described as keeping the unit resistant to microbial growth for up to 28 days between cleanings, per independent lab testing cited by the brand.
Specifications
| Brand | Levoit |
|---|---|
| Model | LUH-N651S-WUS |
| Dimensions & fit | |
| Item Weight | 4.9 pounds |
| Item Dimensions D X W X H | 8.8 × 8.8 × 14.1 inches |
| Capacity & performance | |
| Capacity | 1.6 gallons |
| Power & efficiency | |
| Wattage | 30 watts |
| Voltage | 120 volts |
| Power Source | Corded Electric |
| Construction & materials | |
| Material | BPA Free Waterpath |
| Color | White |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Floor Area | 536 sq ft |
| Runtime | 62 hours |
| Operation Mode | Ultrasonic |
| Control Type | Voice |
| Item Shape | Round |
| Part Number | NeoClassic 650S |
| Manufacture Year | 2026 |
| Room Type | Bedroom, Kids Room, Large Room, Living Room, Nursery, Office |
Frequently asked questions
How large a room can the Levoit LUH-N651S-WUS humidify?
The manufacturer rates it for up to 536 square feet, which fits large bedrooms or open living areas.
Can I put the Levoit humidifier tank in the dishwasher?
No. Only the cover and detachable sink are dishwasher safe; the water tank and silencer cover need hand washing, and heated or sanitizing dishwasher cycles should be avoided even on the safe parts.
How long does the tank last before refilling?
Up to 62 hours on a single 6.2 liter fill, depending on the mist output setting.