Does this use a filter?

yes, the Levoit Classic 300 (LEVOIT 60-Hour Top Fill Humidifiers for Bedroom Large Room (6L)) uses a filter. The product comes with one filter installed and one extra plus a small cleaning brush. Levoit recommends using their replacement filters.

Does this unit make a water gurgling noise or loud dripping noise?

I have tried several different ultrasonic humidifiers, and ALL of them have made a persistent, water-dripping, coffee-percolator sound, this one included. When this is on the lowest setting, it's quiet; any other setting, including sleep mode, sounds like a loud coffee percolator running nonstop. Impossible to sleep with it.

I'm thinking of getting an air purifier also from Levoit, is it okay to put this near one?

Please keep in mind that the design of a humidifier is to increase the water particles (humidity) in the air and an air purifier's design is to remove any airborne particles in the air. Trapped water particles may cause the filter to saturate quicker and possibly harbor mold/mildew buildup. If you would like to keep the two in the same room, we recommend running the two at different times as far away as possible.

"sleep mode .... uses a built-in humidity sensor to automatically maintain a comfortable humidity level" What is the exact humidity level? %

Hi, the intelligent sleep mode turns off all display lights and uses a humidity sensor to automatically adjust the mist level to maintain a 60% relative humidity (RH) while you sleep.

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LEVOIT Humidifiers for Bedroom Home, Smart Warm and Cool Mist Air Humidifier for Large Room, Auto Customized Humidity, Fast Symptom Relief, Easy Top Fill, Essential Oil, Quiet, OasisMist4.5L, White

Product ID: 462114476

Details

Brand
Levoit
Capacity
4.5 Liters
Color
White
Floor Area
430 Square

💧4.5L large capacity

📱Smart app & voice control

🔇Ultra-quiet 26dB operation

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Description

💨 Elevate your space with smart, soothing mist — because comfort is the new luxury.

WHISPER QUIET OASIS - Ultra-quiet operation at just 26dB ensures peaceful sleep or focused work without distractions.
RAPID RELIEF ANYTIME - Dual warm & cool mist with double duct design delivers fast, even humidification for instant comfort.
EFFORTLESS MAINTENANCE - Top-fill 4.5L tank with wide opening makes refilling and cleaning spill-free and simple.
CUSTOMIZABLE WELLNESS AMBIANCE - Add essential oils for aromatherapy and enjoy auto mode that maintains ideal 40-60% humidity for healthier air.
SMART COMFORT AT YOUR FINGERTIPS - Control humidity levels, schedules, and mist output remotely via the VeSync app or voice commands.

The LEVOIT OasisMist 4.5L Smart Humidifier combines large-capacity ultrasonic humidification with smart app and voice control, offering customizable warm and cool mist for fast symptom relief. Its whisper-quiet operation and easy top-fill design make it perfect for bedrooms and large rooms up to 430 sq ft, while integrated aromatherapy and auto humidity mode create a healthier, more comfortable environment tailored to your lifestyle.

Specifications

ASIN	B0B1DQ8KV3
Best Sellers Rank	#18,924 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #20 in Humidifiers
Brand Name	Levoit
Capacity	4.5 Liters
Color	White
Control Method	Voice
Customer Reviews	4.4 4.4 out of 5 stars (10,276)
Filter Type	Water Filter Sponge
Floor Area	430 Square Feet
Global Trade Identification Number	00810043375542
Included Components	1 × 4.5-Liter Smart Warm & Cool Mist Humidifier, Aroma Pad, Cleaning Brush, Water Filter Sponge
Item Dimensions D x W x H	10.8"D x 6"W x 11.97"H
Item Shape	Rectangular
Item Type Name	Auto Customized Humidity, Ultrasonic Top Fill Oil Diffuser for Baby and Plants, Quiet, 4.5L
Item Weight	5.3 Pounds
Manufacturer	LEVOIT
Material	BPA-Free Meterial, suitable for babies and adults
Model Name	OasisMist Smart Cool and Warm Mist Humidifiers for Bedroom Large Room Home,
Model Number	LUH-O451S-WUS
Operation Mode	Ultrasonic
Other Special Features of the Product	Aroma Diffuser, Auto Shut Off, Easy Top Fill, Humidistat, Remote Control, Run All Night, Smart Vesync APP, Timer, Voice Control, Warm and Cool Mist for Faster and Healthier Relief
Part Number	Warm & Cool Mist Top fill humidifier
Power Source	ETL Certified AC Power Adapter
Room Type	Baby,Bedroom,Bedrooms, Bedroom, Large Room, Living Room, Office
Runtime	45 hours
Smart Home Compatibility	Smart Home Compatible
UPC	810043375542
Unit Count	1.0 Count
Voltage	120 Volts
Wattage	12 watts

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