Why it matters
The Levoit LUH-O451S-WUS Humidifier is a hybrid humidifier with a 4.5 liters tank, rated for 430 square feet.
Aim for 40 to 60 percent relative humidity indoors: drier air irritates airways and skin, wetter air feeds dust mites and mold. Evaporative wicks trap the minerals instead of releasing them, so tap water is fine, but the wick stiffens and needs replacing.
The listing names app control and a warm-mist setting.
Warm mist boils the water first, so it releases fewer minerals, but the hot water is a burn risk around children and pets.
A full tank holds about 4.5 liters, which adds roughly 10 pounds of water to carry or lift to the sink and back.
Its tank of 4.5 liters is above the middle of the range we cover: 40 of the 78 humidifiers with a stated figure come in lower, and the range runs from 0.7 liters to 20.1 liters.
Price-wise it sat in the cheapest third of the 14 hybrid models we cover when we checked; the button shows today's price.
It qualifies for our lists Best Cool Mist Humidifiers, Best Evaporative Humidifiers, where it is ranked against every model that meets the same rule.
Compared with the Levoit Superior 6000S Smart Evaporative Humidifier: rated room size 430 square feet here vs 3,000 sq ft; power draw 12 watts here vs 30 watts.
Who it's for, and who should skip it
Good fit if
- Dry winter bedrooms
- Owners who will clean it weekly
Look elsewhere if
- Rooms far larger than its rating
Pros and cons
Pros
- 4.5 liters tank
- Rated for 430 square feet
Cons
- Needs regular cleaning to stay hygienic
Limitations to weigh
- Not stated on the Levoit LUH-O451S-WUS Humidifier listing: run time per fill, noise level. Ask the seller or check the manual before relying on it.
Specifications
The bracket shows where each figure comes from.
| Model number | LUH-O451S-WUS | Retailer |
|---|---|---|
| Room coverage | 430 square feet | Retailer |
| Wattage | 12 watts | Retailer |
| Filter type | Water Filter Sponge | Retailer |
| Capacity | 4.5 liters | Retailer |
Alternatives worth comparing
More room humidifiers we cover
- Levoit Dual 100 Ultrasonic Top-Fill Cool Mist 2-in-1 Humidifier & Diffuser $29.99
- Dreo HM311S Humidifier
- Provirtec HC-12 Humidifier
- Levoit OasisMist 600S Smart Humidifier $109.99
- Vicks V745 Humidifier
All room humidifiers, compared in one table · Every Levoit product we cover
Final verdict
A well-matched choice for dry winter bedrooms. Confirm the model it fits before ordering.
Where to buy
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