Levoit Classic 300S Ultrasonic Smart Humidifier

Introduction & Key Features

The Levoit Classic 300S is a smart ultrasonic humidifier with a 6L capacity, designed for bedrooms, living rooms, or offices.

Smart control: Wi-Fi connectivity with VeSync app, Alexa, and Google Assistant support.
Large 6L tank: Up to 60 hours of continuous use on low mist level.
Ultrasonic technology: Fine mist with quiet operation, ideal for nighttime use.
Auto Mode: Built-in humidity sensor to maintain ideal humidity (40–60%).
Aromatherapy: Separate essential oil tray for fragrance diffusion.

Benefits: Improves indoor air humidity, relieves dry skin, supports better sleep, benefits houseplants, reduces static, and helps protect wooden furniture.

Filter Replacement – When & Signs

The Classic 300S uses a water filter (Top Fill Humidifier Replacement Filter) to trap mineral deposits and impurities.

Recommended schedule: Replace every 6 months with regular use.
Signs it needs replacement:
- Weaker mist output.
- Unusual odor from the humidifier.
- Filter discoloration or buildup.
- Cleaning/replacement reminder in the VeSync app.

How to Replace the Filter

Turn off and unplug the humidifier.
Remove the water tank from the base.
Locate the filter compartment inside the base.
Remove the old filter and discard it.
Insert the new filter securely.
Reattach the water tank and refill with clean (preferably filtered or purified) water.
Restart the humidifier and select your desired mode.

⏱ Replacement only takes about 2–3 minutes.

Where to Buy Replacement Filters

Regular filter replacement ensures efficient performance, cleaner mist output, and longer lifespan of your Levoit Classic 300S humidifier. Check its user manual.