LEVOIT Classic 300S Smart Humidifier

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What is LEVOIT Classic 300S Smart Humidifier?

The LEVOIT Classic 300S Smart Humidifier is one of the best choices for convenience thanks to its quickly humidifying rooms of up to 505 square feet which lasts up to 60 hours without a refill. This convenience comes at a cost, though, as the purchase price is similar to other high-performing options. The Levoit 300s come with a convenient design and easy-to-use control buttons, a clear digital display, consistent performance, key features that make operating and cleaning it a breeze, and the ability to link with smartphones and other smart home devices.

Design and Features

  • Powerful Performance: The unexpected 4× faster humidification speed is up to 60 hours, and the covering is up to 505 ft². The LEVOIT Classic 300S humidifier will raise RH by 12% in 30mins.
  • Smart Control: Choose your preferred settings with the APP to customize the humidity so that it adjusts without worry.
  • Safe and Healthy: The baby has higher requirements for humidity, and the Auto Mode will maintain the baby’s room at the healthiest humidity level.
  • Large Tank: Refill less often and enjoy long-lasting mist with the 6-liter water tank.
  • 360o Nozzle: Turn it in any direction, so you can direct the mist towards you or your plants.
  • Timer Set: A timer in VeSync if you’d only like to mist for a few hours and conserve energy.
  • Sleep Mode Turns on Auto Mode and turns off display lights to create a calm environment while you rest.
  • Perfect for plants: Besides to the most basic plant humidification, it offers you more comprehensive plant-care programs. Including scanning recognition, specialized custom plant management, and more professional encyclopedias.
  • Relaxing Aromatherapy: You can add your favorite essential oils to the aroma box and enjoy the fresh-smelling air.
  • Warranty Guarantee: If your product is defective, they will send you a replacement right away.
  • Anti-Leak Design: The water outlet double valve structure uses a filter to protect your water from contamination. The LEVOIT provides the greatest protection against leaks and protection from contamination.

What’s in The Box

  • 1 × 6L Ultrasonic Smart Top-Fill Humidifier
  • 3 × Aroma Pads (1 Pre-Installed)
  • 2 × Water Filter Sponges (1 Pre-Installed)
  • 1 × Cleaning Brush
  • 1 × User Manual
  • 1 × Quick Start Guide

Setup and Installation


If the display shows the No Water Indicator incorrectly.

  1. Make sure the arrow above the LED display is aligned with the indicator line on the base to ensure the water tank is on the base.
  2. Check the max water line to see if there is too much water in the water tank and base chamber. Pour out extra water if water is over the max line.
  3. Check and clean the Water Outlet Valve.
  4. Check whether the Float Brackets rotate smoothly and clean them.

LEVOIT Application

LEVOIT Classic 300S Smart Humidifier Review 

9.2Expert Score
Our Verdict
Features like a smart-control app, an aromatherapy pad, and a night light make Levoit’s VeSync Classic 300S humidifier great for bedrooms or nurseries.
  • Auto mode automatically adjusts humidity level
  • App-connected
  • Large water tank
  • Pricey
  • Sensitive humidity monitor

Specification: LEVOIT Classic 300S Smart Humidifier



Special Feature

Smart Control, Top Fill, Easy Clean




6 Liters

Floor Area

505 Square Feet

Operation Mode



3600 minutes

Item Weight

4.4 pounds

Room Type


Model Name

Humidifiers for Bedroom Large Room Home


BPA free, suitable for babies and adults

Product Dimensions

9.65 x 7.56 x 13.39 inches

Included Components

1 × User Manual, 1 × 6L Ultrasonic Smart Top-Fill Humidifier, 1 × Cleaning Brush, 3 × Aroma Pads (1 Pre-Installed), 2 × Water Filter Sponges (1 Pre-Installed)




26 watts

Power Source

ETL Certified AC Power Adapter

Control Method






Country of Origin


Item model number

Classic 300S

Is Discontinued By Manufacturer


Date First Available

December 1, 2020

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