tldr; Note: Reddit data may include Levoit air purifier discussions. The Classic 300S is a smart 6L ultrasonic humidifier with top-fill and app control.
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Best praise vs top criticism for Levoit VeSync Classic 300S
“First time buyer here. I had the same problem - stuffy nose, nosebleeds. I bought Levoit Classic 300S Ultrasonic Smart Humidifier. I have not have problems since. I dont use a lot of lip balm or lotion anymore as well. Worth it.”
1 Reddit opinions analyzed • Last updated 2/24/2026