Levoit 300S
Humidifiers

300S

Levoit

Released Nov 1, 2021 · Analysis updated Mar 10, 2026

Levoit VeSync Classic 300S Smart Humidifier in the Humidifiers category. The Levoit 300S scores 81/100 based on 6 expert reviews in the humidifiers category. Coverage includes reviews from Airpurifierfirst, Moderncastle, Housefresh, and Techgearlab.

Critic Score

What's this?
81

based on 6 expert reviews

AirpurifierfirstModerncastleHousefreshTechgearlabTechhive+1 more

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Pros

  • Affordable(3)
  • Excellent performance(3)
  • Smart features with vesync app control(2)
  • Auto mode with air quality sensors(2)
  • Compact(2)

Cons

  • No auto mode on standard core 300 model(2)

6 Expert Reviews

95
Jul 31, 2024

The Levoit Core 300S is one of the best small air purifiers we have tested, offering outstanding performance, smart features, and excellent value for money.

95
Aug 1, 2025

The Levoit Core 300 and 300S air purifiers delivered exceptional performance in testing, removing 96-97% of particulates from the air in a medium-sized room.

85
Feb 27, 2026

The Levoit Core 300S is a worthy upgrade to its predecessor with smart features, better energy efficiency, and good air cleaning performance for small rooms.

73
Aug 19, 2025

A virtually flawless humidifier that'll run for 2+ days on a single tank

72
Nov 30, 2021

App difficulties are the only sore spot with this portable air purifier.

65
Nov 23, 2023

Despite Levoit Core 300S cost-effectiveness and excellent air cleaning performance, it raises concerns about the accuracy of its auto mode, reliability of the built-in sensor, and a past dispute over ...