Winix - ZERO 4-Stage (AUS-1050AZBU)
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Reddit Reviews:
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Last updated: Dec 15, 2025 Scoring
Liked most:
150
5
"this thing has been amazing!!! ... I have two kids with seasonal allergies and this thing has been amazing!!!"
"I have a levoit and it’s amazing. ... I have the large one in my bedroom which isn’t that big but I have 5 dogs and it alleviates so much dust. ... That’s the only room in my house that I breathe the absolute best in."
"it’s majorly helped w allergies and dog smell"
71
10
"We have indoor animals and almost a year later running 24/7 no issues. ... It’s just not the workhorse Winix is."
"I've had a Coway airmega going 24/7 for six years that hasn't developed any noise problems"
"I got annoyed when my winnnix developed a noise, but then I realized it was the unit I’ve been running almost 24/7 for ten years. ... The 2015-ish one is still fine."
51
8
"how quiet it is. ... it's remained silent at night after a couple of years."
"it runs 24/7 for more than 5 years and works great and silently."
"That said my IQ Air at level 2 is damn near silent. ... At its lowest setting (level 1), it achieves complete silence, making it ideal for bedroom use. ... When operated at level 2, while the sound becomes noticeable from the bed, it produces a different type of noise than the Levoit models - specifically, it lacks the characteristic "wooshing" sound that Levoit units tend to make. Sleeping with the unit at level 2 is still comfortable."
74
7
"I can tell you they really work. I have a mold allergy, and mold is literally everywhere in outdoor or indoor air with spores just waiting to land in a suitable environment for growth, but I have no symptoms at home with my two small Winix."
"The dog smell is already gone after a couple hours"
"Most air filters only get down to 0.3 microns; these get down to 0.003 microns, which captures mold - which is my main concern - as well as viruses, bacteria, etc."
316
15
"I found the live beam 3's on sale on Amazon for 129! ... For the price, I don't think I'd find better."
"An S8 would be great for vacuuming your rugs and carpets ... For $350, my two S8s are very hard to beat! ... Almost all of the ones I thought vacuumed, very, very well have been discontinued except for the S8. ... If a Mova V50 can do 80% as well as our cheap S8s I would be pleased!"
"Overall I think these are super impressive especially for the price. ... These could be bargain of the year.. I'm very happy so far with them"
Disliked most:
3
14
"I had a Levoit Core 300 that developed a fan whine after a year. ... Went through the RMA process and they sent me a new one, which developed the same noise within a few months."
"We have 2 levoits and even on 1 I can hear it across the room with the TV on. ... They both have an ear-piercing high pitched sound that I can't stand."
"Levoit Core 300 was decent on specs, but it hummed just enough to wake the youngest every other night."
0
5
"this unit has a annoying light sensor that doesn't allow it to run in auto mode in the dark. The sensor is silly and I wish I could disable it."
"I recently got a Winix as well that I like although it has a light sensor so it knows when to go into “night mode.” I thought I would like this feature until winter hit and the sun started setting at 4:30 pm and my air purifier thinks it’s night time and isn’t detecting contaminates without a light on near it."
"The Winix has a light sensor that doesn't allow it to work in auto mode in a dark room. ... If I put mine in auto mode and turn the room lights off it goes into sleep mode which is basically turning it off."
34
32
"I literally just bought the Airmega 350 on Amazon and immediately regretted since I can't find the replacement filters for sale anywhere. ... Coway finally responded but wasn't helpful. They said they don't know when the filters for the 350 will be released."
"450 is round. New design. Not as good but more trendy. ... Higher claimed CADR. It is round so that number will go down rapidly. ... The VERY SHORT version, although ... there's a sticky ... is that round units are not inferior due to their shape. They're inferior because ALMOST WITHOUT EXCEPTION they have: * No removable pre-filter * Minimal Carbon, placed after the main filter * Deformable main filter * Smaller fans which have to spin faster to move more air therefore have a shorter lifespan * Shorter filter life leading to more costly replacement * Questionable filter efficiency, since it's difficult to manufacture a deformable HEPA filter. Levoit in particular claimed their filters were HEPA but they weren't at the time. They might be now, since they've started shipping them reinforced. * Instructions to VACUUM YOUR FILTERS, which pretty much means they're not HEPA. ... The airmega round units are, unfortunately, no exception."
"filter replacements can get pricey though ... filters are WAY overpriced considering you can get the machine with 2 filters for $120.."
0
1
"Both of my Winix air purifiers started smelling like smoke"
0
1
"Curb your expectations about it handling hair. Sure it may be able to catch come hair in the general vicinity of the machine. But hair is too heavy to suck in from across the room."
Both of my Winix air purifiers started smelling like smoke, they are different models, cleaned weekly and filters changed regularly, I don’t recommend them.
r/Costco • Need Help Choosing an Air Purifier from Costco—Totally Lost Here! ->you can't beat the physics. what you want is the big size as prioirty thing to look for first. then you can look into other things but the size of purifier(filter) has biggest impact. winix is solid imo for basiaclly 99% of the use case.
r/BuyItForLife • The REAL best air purifier - I HATE DUST! ->Winix seems to be the play here. I have two and they seem to work and are common enough for filters to be inexpensive. The prefilter is easy to clean. I did recently have a DOA unit but the replacement was easy through Amazon.
r/AirQuality • Air purifier ->Definitely recommend Winix. Australian and comes out top of various tests. (If you haven’t been warned- don’t buy Dyson) Super sensitive to more than just particulates and has a ‘pet filter’ that is changed monthly that goes around the main filter and prevents it getting clogged with dust. Helps to prolong its life if you have pets
r/AusRenovation • Air Purifiers ->Winix is a solid air purifier, but not this model. This only uses a thin filter, no charcoal. The true HEPA rectangular ones are not that much more but work so much better.
r/Costco • Any thoughts on pictured air purifier? ->Winix works great ! I have 2. Zero complaints.
r/BuyItForLife • Best air purifier in 2025? Need recommendations! ->Winix is fantastic and well-priced
r/BuyItForLife • The Best Air Purifiers? ->AVOID DYSON AT ALL COSTS!!! They look cool but are RIDICULOUSLY overpriced for what you get. Spent $500+ on one and my cheaper Winix outperforms it by a mile. Total marketing scam.
r/buyforlifetips • Best Air Purifiers for Home Use? Recommendations Needed ->I would buy whatever Winix fits your budget and space. My two Winix units are 11 years old with 24/7 use and still going strong!
r/AirPurifiers • Best Air Purifier under $250? ->I like the Winix. Bought three. One became noisy after 3 months. Returned and bought a new one to replace. Thank you Costco - this is why I spend thousands in your stores!
r/Costco • What’s the best air purifier I can get at Costco currently? (USA) ->We got the Winix ones and have been using cheap replacement filters from the web. No issues so far. We now have 3 as you could buy refurbs from them for like $50 a few years ago. Been running 24/7 for the most part.
r/Costco • Need Help Choosing an Air Purifier from Costco—Totally Lost Here! ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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