Levoit

PlasmaPro 400S

Levoit PlasmaPro 400S

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Overall

#118 in

Air Purifiers

according to Reddit Icon Reddit

Sentiment score64% positive
9
3
2

Top Pros

Top Cons

No summary available.

Last updated: Jun 17, 2026

Reddit Reviews

Reddit Iconbarbequelighter
12 months ago

Levoit was the brand of choice for immunocompromised people during Covid. I have a Levoit 400S.

Reddit Iconbromontana9
12 days ago

We just got the 400s for the living room and the 200 for our bedroom. Our state energy trust of oregon had a rebate on them so we got about $150 off the total price tag. So far im liking them. The 400s is nice with the auto setting. I leave it on 24/7 it will crank up on its own when im cooking or it senses anything else in the air.

Reddit IconDagreecer
5 months ago

I had a winix 5520 for 1 week and a 400s levoit. The winix I could smell cigarette smoke my dad smokes in the basement, it was blowing out cigarette smoke smell on day 4. The 400s I bought doesn’t smell like that been running a month. I don’t smell cigarettes at all, I have unfortunately have to live here right now, and this what my setup is. Block off the main floor door. Put a curtain up over the door to help seal more. Have a levoit 300 core outside the door and the 400s inside my room. The 300 has taken a big hit and the carbon filter is done for already soaked up and just smells, so at this point i think it’s just taking all the toxic smoke out of the air but didn’t help the smell anymore unless I get a new filter. Ultimately if I had my own house I would get the winix. But I did notice that the vents are on the sides so you put it flush with the wall it’s not going to be as affective as the 400s.

Reddit Iconemmalump
12 days ago

I currently have 2 levoits and even put a few more on my wedding registry! I have fairly severe allergies, but also have a dog and a love of open windows, and the levoits have made a noticeable difference despite the bad habits. One of the biggest endorsements for me is that multiple people have commented how our house has NO dog smell despite us having a thick coat, large dog who sheds constantly. I also am very particular about noise, and they’re really quiet on low settings and a nice, steady white noise on the higher settings. Not intrusive at all.

Reddit IconEvenAd7205
3 months ago

Ho comprato levoit 400sdurante l'ultimo Black Friday e me ne sono pentito amaramente emette un odore che mi fa stare malissimo, ma Bastava leggere le recensioni, ovviamente sono poche perché nessuno vuole fare discussioni col venditore per poter fare il reso, ma ce ne sono molte e non dipende solo dall'odore del filtro. Ovviamente io sono più sensibile soprattutto ad un certo tipo di plastica ma non ho mai avuto nessun problema col Dyson

Reddit IconFantasticMovie2937
9 months ago

Just basic controls. This is with the 400s https://preview.redd.it/m0pmdj621crf1.png?width=1344&format=png&auto=webp&s=9cb7ace60a7e986c104e6a6837f3a69782c33046

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