Introduction
This manual provides detailed instructions for the safe and efficient operation of your LEVOIT Smart Cool Mist Top Fill Humidifier. Designed for ease of use and smart integration, this humidifier helps maintain optimal humidity levels in your living space, contributing to a healthier and more comfortable environment. Please read this manual thoroughly before initial use and retain it for future reference.

Image: The LEVOIT Smart Cool Mist Top Fill Humidifier, showcasing its sleek design and the accompanying VeSync app interface on a smartphone.
Safety Information
To reduce the risk of fire, electric shock, or other injury, always follow basic safety precautions when using this appliance.
- Always place the humidifier on a firm, flat, water-resistant surface away from direct sunlight and heat sources.
- Do not place the humidifier directly on carpet, rugs, or absorbent surfaces.
- Ensure the humidifier is unplugged before cleaning, refilling, or moving.
- Use only clean, purified, or distilled water to prevent mineral buildup and white dust.
- This product is ETL Certified for safety and reliability and is made from BPA-free materials, suitable for use around babies and adults.
- Keep out of reach of children and pets.
Package Contents
Verify that all components are present and in good condition upon opening the package:
- 1 × 3L Ultrasonic Smart Top-Fill Humidifier
- 1 × Quick Start Guide
- 1 × Cleaning Brush
- 1 × User Manual (this document)
- 1 × Water Filter Sponge
Product Overview
Familiarize yourself with the main components of your humidifier:

Image: A visual representation highlighting the humidifier's top-fill design, control panel, mist nozzle, and the integration with app and voice control.
- Water Tank: 3-liter capacity for extended operation.
- Mist Nozzle: 360-degree rotating nozzle for directing mist.
- Control Panel: Digital display and touch controls for settings.
- Essential Oil Tray: Integrated tray for aromatherapy.
- Base: Houses the ultrasonic atomizer and electronic components.
Setup
Follow these steps for initial setup:
- Unpack: Remove all packaging materials and place the humidifier on a flat, stable surface.
- Fill Water Tank: The humidifier features a convenient top-fill design. Simply pour purified or distilled water directly into the top opening of the water tank. Do not exceed the maximum fill line.

Image: Demonstrates the easy top-fill method for the water tank and how to add essential oils to the dedicated tray for aromatherapy.
- Connect to Power: Plug the power cord into a suitable electrical outlet.
- Connect to VeSync App (Optional but Recommended): For smart control features, download the VeSync app from your smartphone's app store. Follow the in-app instructions to pair your humidifier.

Image: A close-up of the VeSync app interface, illustrating how users can monitor and adjust humidity levels, set targets, and control the humidifier remotely.
Operating Instructions
Your LEVOIT Smart Humidifier offers various modes and controls for personalized comfort.
Manual Operation
- Power On/Off: Press the power button on the control panel to turn the humidifier on or off.
- Mist Level Adjustment: Cycle through low, medium, and high mist output settings using the dedicated button.
- Display Light Control: The display light can be turned off completely for zero light pollution, ideal for bedrooms.
Smart Control via VeSync App
The VeSync app provides advanced control and monitoring capabilities:
- Remote Control: Adjust humidity levels and settings from anywhere.
- Auto Mode: Set a target humidity level, and the humidifier will automatically adjust its output to maintain it using its built-in humidistat. Recommended humidity levels are 40-60% for adults, 50% for babies, and 60-70% for plants.
- Scheduling & Timer: Program the humidifier to turn on or off at specific times, fitting your daily routine.

Image: A user setting a schedule for the humidifier via the VeSync app on their phone, illustrating the convenience of automated operation.
Voice Control
Integrate with smart home assistants for hands-free operation:
- Compatible with Amazon Alexa and Google Assistant.
- Use voice commands such as "Alexa, increase humidifier mist" to control your device.
Aromatherapy Function
Enhance your environment with essential oils:
- Add 2-3 drops of your favorite essential oil to the dedicated aromatherapy tray.
- Do not add essential oils directly into the water tank, as this can damage the humidifier.
Maintenance
Regular cleaning and maintenance are crucial for optimal performance and longevity of your humidifier.
Cleaning
Clean your humidifier before first use and regularly thereafter to prevent mold or mineral build-up.
- Daily Cleaning: Empty the water tank and wipe down the interior with a clean cloth.
- Weekly Cleaning: Disassemble the humidifier components. Most parts are dishwasher safe. For parts that are not, use the provided cleaning brush and a mild detergent to clean thoroughly. Rinse all components with clean water.
- Descaling: If mineral deposits (white dust) occur, clean the transducer and water tank with a solution of equal parts white vinegar and water. Let it soak for 20-30 minutes, then scrub with the cleaning brush and rinse thoroughly.
Filter Replacement
The humidifier uses a water filter sponge to capture impurities and improve humidifying efficiency.
- When to Change: The water filter sponge generally lasts 1 month, depending on water hardness and usage.
- Where to Buy: Replacement filters can be found by searching for "LEVOIT 10-Pack Humidifier Replacement Filters" or B09ZY9N6PD on Amazon.
Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| White dust around humidifier | Using hard tap water. | Use purified or distilled water. Clean the humidifier regularly to remove mineral buildup. |
| Humidifier produces little or no mist | Low water level; Mineral buildup on transducer; Air outlet blocked. | Refill water tank; Clean the transducer; Ensure air outlet is clear. |
| Unusual noise or hum | Humidifier not on a flat surface; Water tank not seated correctly; Mineral buildup. | Place on a flat surface; Re-seat the water tank; Clean the humidifier. |
| Water leakage | Overfilled water tank; Components not assembled correctly. | Do not overfill; Ensure all parts are securely assembled. |
Specifications
Detailed technical specifications for the LEVOIT Smart Cool Mist Top Fill Humidifier:
- Model Name: Dual 200S
- Item Model Number: LUH-D301S-WUS
- Product Dimensions: 7.1"D x 7.1"W x 11.8"H (18 × 18 × 30 cm)
- Item Weight: 3 lb / 1.4 kg
- Water Tank Capacity: 3 Liters
- Operation Mode: Ultrasonic
- Effective Range: 107-290 ft² / 10-27 m²
- Whisper-Quiet Operation: ≤ 28dB
- Max Runtime: Up to 25 hours (on minimum mist setting)
- Voltage: 240 Volts
- Wattage: 24 watts
- Control Method: App (VeSync), Voice (Alexa, Google Assistant), Touch Panel
- Filter Type: Pre Filter (Water Filter Sponge)
- Material: BPA-free
- UPC: 810043375986
Warranty and Support
LEVOIT provides comprehensive support for its products.
Warranty Information
Satisfaction Guaranteed: Our California-based Customer Support Team is here to help. If your product is defective, don’t worry about shipping it back. We’ll send you a replacement right away!
Additional Resources
For further assistance or to download the official user manual in PDF format, please visit the following link:
For warranty details and support, you may also refer to the official warranty document:





