“I highly recommend this one: Levoit Classic 300S. I've been very pleased with mine.”

67% of 51 verified owners recommend the Levoit Classic 300S.
Affiliate blogs here say 100% recommend, while the owner-based score is 67%. They earn a commission on every sale — so we show them for transparency but never let them move the score.
The headline score reflects owners (Reddit, enthusiast forums), independent lab tests, and blogs with no affiliate links. YouTube and affiliate blogs are shown for perspective but kept out — hover the i for why.
“I highly recommend this one: Levoit Classic 300S. I've been very pleased with mine.”
“It's fine but I regret not buying one with a hardware knob instead of a touch interface because that means I can't use a smart outlet to tell Google Home/Siri to turn off/on my humidifier when I leave for trips because if it turns off, you have to tap on the button to turn it back on. Likewise if the reservoir runs out, you have to tap on a button to turn it”
“I’ve had a Levoit Classic 300S humidifier for 3 years and it just stopped working. It was awesome while it worked, but despite cleaning it properly & regularly, it just stopped misting one day. I tried all the recommended troubleshooting methods and nothing helped.”
“I’ve used the Levoit Classic 300S in my bedroom for about a year, and it has some solid features worth noting. It’s a top-fill design, which makes refilling and cleaning easier compared to older models I’ve tried. The smart functionality is a mixed bag—I like being able to set schedules and adjust humidity levels through an app, but the auto mode tends to ov”
“I currently have the Levoit Classic 300s; definitely the best one I’ve ever had. You can set it on a schedule to turn on when the humidity dips below a certain point, and it will turn off automatically at a point as well. Super quiet, has a removable top tank (real handy for refilling and cleaning) and gets the job done. Anecdotally, even sleeping without i”
“It has absolutely zero effect, even when blowing mist at full blast. The agrometer near the unit doesn't budge after going from 22% to about 30%. Useless. Amazon return.”
“I’ve used the Levoit Classic 300S for about a year now. It’s a cool mist humidifier with a built-in humidistat, which I found helpful for keeping humidity levels in check without overdoing it. The tank is top-fill, which made refilling easier compared to bottom-fill models I’ve used before. It does need frequent cleaning, especially if you have hard water, s”
“I am having the same issue with this exact model myself. It's only 2 months old”
“I have the Levoit Classic 300S smart humidifier but don’t actually have it connected to my phone because I don’t care about the smart option. I also wanted one that automatically adjusted. I set my desired humidity level and when it goes on when it’s 5% below that and will turn off again when it reaches my set humidity level. I never have to think about turn”
“When I took the tank off the base was also way more full of water than usual”
“Best I've ever had. Small footprint. 6L top fill tank. Smart/app or button on machine control. Buy once, cry once.”
“After having the same issues I got a levoit classic 300s smart humidifier. Best dry yet by far. Highly recommend”
“I can hear the motor spinning when I turn it on but it produces no vapor”
“My levoit units work w/ my automation server or on their own app which is nice.”
“My stops regularly…the first one I had, same model 300S, never did this”
“Im having literally the exact same issue with the same humidifier”
“I own the Levoit Classic 300S humidifier for my bedroom. While I don't use it for my instruments, it is fantastic at maintaining a target +\- 5%.”
“War Jahrelang mit Levoit zufrieden und dann plötzlich!”
“I have a wifi levoit classic 300s Humidifier that has auto run with auto shut off once it hits 5 degrees above its setting”
“I ended up returning this humidifier to the seller”
“I like the LEVOIT Classic300S Ultrasonic Smart Top Fill Humidifier, Extra Large 6L Tank Notifies my phone when the tank runs out and reminds me to clean once a week. Big tank and you can set it to turn off at a particular humidity level.”
“i have a levoit classic 300s humidifier and it has a 6l capacity so im guessing thats what you mean by big?? it does a pretty good job and i definitely recommend it”
“There was too much water collected in the base”
“Das leichte Gefälle hat ihm nicht gefallen”