
Levoit - PlasmaPro 400S
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Reddit Reviews:
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Based on 1 year's data from Feb 15, 2026 How it works
Liked most:
36
3
"Our old home is super dusty and these units have made a huge impact on how we feel and no longer see tons of random dust particles in the air."
"My partner has a severe dust mite allergy and the first thing we bought was a a Levoit true HEPA filter air purifier. ... A combination of both have made a night and day difference, we noticed the different straight away"
"It honestly changed my life. ... I used to literally cough up blood due to the irritation from seasonal allergies. When I’d lay down at night you could hear burbling in my lungs. I got this filter last summer and it was legitimately the first summer I’ve slept well in close to 20 years. ... Ditto this summer. I’d say a 90% reduction in my symptoms while at home."
32
2
"I set up three in my apartment and I never had to dust again."
"Our old home is super dusty and these units have made a huge impact on how we feel and no longer see tons of random dust particles in the air."
"My partner has a severe dust mite allergy and the first thing we bought was a a Levoit true HEPA filter air purifier. ... A combination of both have made a night and day difference, we noticed the different straight away"
18
0
"never had any issues with odor! ... Helps for dust as well."
"as far as the dog smell- none! ... Very impressed with levoit"
"Highly recommend Levoit! ... I have 2 large dogs in a 44sqm condo. ... When my parents would visit, they usually complain na amoy aso yung condo. Now they say wala na amoy."
9
0
"They do a good job of removing smoke from the room."
"We have a bunny, dogs and live in an area that gets wild fire smoke every year and our Levoit purifiers take care of all of these things."
"The first year I had it, there were very few fires and i was grumpy. but last year and this year it has been clutch."
7
2
"I'm a noise weenie at night but this thing is *too* quiet"
"and are quiet"
"It's also a white noise machine at night (pleasant whirring) ... It's loud on speed setting 3 which we use a white noise to sleep."
Disliked most:
4
5
"Had 3 Levoit’s but they all died between 12-24 months. Junk"
"The Levoits I got that had sensors all broke within the first few months."
"Ok sana kaso nasira ang Levoit namin after a year."
1
3
"The Levoits I got that had sensors all broke within the first few months."
"My Levoit air purifiers don’t do that, they ignore my farts."
"My Levoit thinks it's in an OR or a chip clean-room at Intel. It records a tiny blip almost every night, around 0300 or so, but that's about it."
2
6
"I’m using levoit filters at home and they’re fine and the 2.5 levels are very low. I can also connect them to home assistant which is a big plus for me so I can monitor the filter level(though I’m guessing this is just an arbitrary use based calculation). But I do regret buying them due to the replacement thing."
"the levoit filters were expensive to replace."
"They just wear out their filters sooner."
2
2
"They’re not quiet either."
"I just use them on manual and they are totally fine, a bit noisy though."
2
2
"Now, probably, you can just not turn on PlasmaPro and it’s fine but I wasn’t taking any chances. ... I literally do not know. When I asked the company the same question they just denied that ionization can harm birds."
"The ones you buy in the big box stores tend to have it, on the box it will say “PlasmaPro”. ... I returned the PlasmaPro model I had bought at Target and ordered one without from Amazon, I didn’t want to take any chances."
"i bought a plasma pro one the other day. as long as i keep it off, do you think it’ll be fine?"
Levoit was the brand of choice for immunocompromised people during Covid. I have a Levoit 400S.
Just basic controls. This is with the 400s https://preview.redd.it/m0pmdj621crf1.png?width=1344&format=png&auto=webp&s=9cb7ace60a7e986c104e6a6837f3a69782c33046
Another Levoit user here; I've got the 400S. Seems to do a good job. I've got it located in our main bedroom on the second floor. I can usually tell it's effectiveness when something is being fried on the stove downstairs...the air quality decreases significantly, then the purifier really gets to work and takes care of that.
I've got a Levoit 400S purifier and it does pretty well in Google Home. The controls in Google Home are the same as what's available in the VeSync (Levoit's parent company) app. Having the VeSync app installed also will give you alerts to filter life. The Google Home app doesn't seem to do that part.
Weird, mine has the Plasma Pro option in it too
Yeah, the purifier I have (Levoit 400S) says to vacuum the filter every 2 weeks.
I had the IKEA one got rid do it because I didn’t have space for 2. It was in my bedroom. It worked pretty well TBH. My other one is a levoit 400s for comparison.
I like the smoke filter with the 3 changeable pre-filters in the levoit. But I’ve had the 400s for 4-5 years it’s fine but when you change fan speeds it squeaks now after years of use. There’s no prefilter really unless you get that model. Well I guess there sort of is idk. Thinking about getting the 5520 Winix now Winix has a built in pre-filter easier to clean though I think.
I got a 400s for 90 bucks and I love it.
I had the same problem with my cat. I ended up going with the Levoit 400s which covers 1,700 plus sf. It has 4 levels of power and an auto mode as well. It's very quiet except on high power and also has app control. You can also lock the unit's manual buttons via the app so your cat can't accidentally step on them or play with the buttons. It has helped with my cat's asthma tremendously. I got it for $200 on Amazon. Probably tip, download the app before buying the product and they'll offer you $100 off through the app store.
Get a bigger, stronger air purifier, or several smaller/medium ones. If one larger one (i have the Leviot 400s), place it in the most open spot in the house. The biggest problem with air purifiers that makes people think they don't work is that they often block the intake holes for the air by tucking them beside or behind furniture. To do it's best work, an air purifier needs the intake holes to be clear to take in as much air as possible. If you get 2-3 smaller ones, place them closer to the rooms the cat litter boxes are. Get the right filter for the air purifiers - many of them have specific pet scent filters that catch a lot more of those smells. How often are the litter boxes scooped? What type of litter is being used? How often are they fully emptied out and washed?(FYI, this should be done at the very least every month. I clean my three every two weeks) I have two cats and three litterboxes in a 1 bedroom apartment. I scoop twice a day, I use a clay based low dust cat litter and add a tablespoon of baking soda every day when I do my morning scoop. I have a large air purifier with a pet filter. When I have guests over, they have always commented on how they can't smell the cats and ask how I do that in such a small space lol.
Hello guys, Short-long story: me and my wife moved to our new house and we developed difficulty to sleep cuz of allergies. We have also two new cats with us that are not helping with that. I bought a Levoit 400S and used it for 7 days…it seems to help but not as I expected. I have 7 days to ask a refund. My budget is 250€… may I get a better option for that price? I’m located in Italy. Thanks so much!
We have 2 Levoits, 400 in the family room and 300 in the bedroom. Happy with them.
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