
Winix - 9800
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Reddit Reviews:
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Last updated: Dec 14, 2025 Scoring
Liked most:
5
1
"I love mine because it's not as noisy as the cheaper brands ... I run it on it's highest setting when I'm not in the room, and it's second highest setting when I am close to it."
"Winix is a good option for cheap air purifiers that aren't horribly noisy"
"On power 3 it’s barely even audio"
13
1
"Winix makes a quality product. ... I have one that’s run basically non stop for almost a decade."
"My two Winix units are 11 years old with 24/7 use and still going strong!"
"They've been running 24/7 for years now (since COVID when I started caring about air quality) and no issues."
14
0
"cheap to maintain"
"They are cheap to buy"
"Winix Air Purifiers bought on sale at Costco. They’re excellent & under $200."
32
2
"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."
"It wasn't until I upgraded to 2 winix machines that I finally got relief and it was instant."
"they work extremely well"
26
4
"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."
"They made the house livable during the last wildfire season."
"It wasn't until I upgraded to 2 winix machines that I finally got relief and it was instant."
Disliked most:
1
1
"The Winix will help a lot if you're in a smaller room, like 275 sq ft max"
"I could clear my living room and hallway faster with the AirFanta alone. ... I've been testing it and it cleans the smell faster than my Winix. To be expected with a higher CADR."
0
3
"I just opened up and replaced bearings on one that has been running for maybe 8 years as it got too noisy."
"One became noisy after 3 months."
"it has gotten noisier over time, especially on the “sleep” mode."
0
3
"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."
"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."
"A window can be open across the house and my Ninja will notice a drop in AQI and speed up the fan while the winix just continues to blow slow. ... I have noticed if I turn the fan speed up on the winix it will notice the AQI change, but that makes the auto mode useless."
1
1
"PlasmaWave is just a glorified ionizer. I personally cannot stand the scent of ionizers, it gives me headaches. ... Anything with an ionizer gives me headaches because of the ozone they produce."
0
1
"The Winix ones did an okay job, but the Alen ones are incredible. We have a 75i in the open living room/dining room/kitchen area and a 45i in my spouse's office, our bedroom, and one of the guest bedrooms. The 75i and all but one 45i have the fresh filters and the office 45i has the VOC/smoke filter. They're surprisingly quiet, even on turbo mode. Not inexpensive, but the investment in our health was worth every penny."
I like my cheap filtrete for white noise in the bedroom, I have two winix filters in my office and living room. Both have huge filters and prefilters that are cheap to replace. I used consumer reports to pick them out. Honeywell uses small filters and I wouldn’t recommend them unless it’s a very small room.
r/BuyItForLife • What are the Best Air Purifier in 2025? ->Consumer reports score winix the best. I’ve gotten every other big box brand and after having my first winix, I got two more. They are quiet but kick up if we’re cooking or our dogs lay nearby.
r/homeowners • To kind homeowners, the best air purifier? What do you use for home? ->That's a large area and you will need at least two air purifiers unless you are willing to spend. Even two Winix 9800s or the C909 (cheaper Costo cousin) would need to be run on high for adequate filtration. Running air purifiers on their highest speed is noisy. Having said that, I think bipolar ionizers like the Plasmawave in most Winix air purifiers will help destroy mold, but they will only help with mold that the air purifier captures (or possibly in very close proximity). Hepa filters will trap mold, but I think mold can grow on some filters in humid environmnets (why I would avoid air purifiers with built in humidifiers). Your best bet with mold is to destroy it at the source. I would check out the Wiki pages provided by the mods here. They have buying guides that will help you select the right air purifier for your needs. You can find it in the "about" section.
r/AirPurifiers • Best air purifier for mold/pets? ->Winix has helped me tremendously. They are cheap to buy, cheap to maintain, and they work extremely well.
r/AirPurifiers • What Air Purifier Do You Recommend for Asthma? ->I was given a Winix 9800 as a bonus for buying solar panels through Costco. It seems to work just fine, and I can view an air quality chart on my phone for my living room. I know it actually works, because if I fart near the air filter, I get an "air quality alert" message on my phone. I'm not kidding.
r/Costco • Any thoughts on pictured air purifier? ->Thank you! This is really helpful. Like you suggested, I'll likely go with the Winix 9800. I think since it can work to rooms up to 2,420 sq. ft that should be more than enough coverage, and the filters will last me a lot longer. I'm constantly going through filters with the bionaire. I had it right next to the litter box, but it was far too small to keep up. Thank you again! You really know your stuff :)
r/AirPurifiers • Looking for a High-Performance Air Purifier for Cat Litter Dust (QVC EASY Pay Options Only) ->Another vote for winix! We bought 4 at Costco a few years ago in anticipation of wildfire season (I live in the Pacific Northwest). They work so well and are very inexpensive to maintain, which is part of the reason I chose them. Some purifiers may be a decent price to purchase, but the replacement filters are almost as much! We have an air purifier in each bedroom and have no dust at all. We are a 2 cat household. If there is a forest fire, we put a purifier in the kitchen/living room area as well.
r/homeowners • To kind homeowners, the best air purifier? What do you use for home? ->the Winix 9800 works great.
r/moderatelygranolamoms • What are the Best Air Purifiers for Pets? Do you notice any clear difference when using them? ->Recently went through these forums regarding how to deal with cat litter smells (mainly poop smell) - main take away is that air purifiers aren't going to solve the cat litter problem on their own, you need something with a lot of charcoal to fight odor and realistically none of the purifiers have enough to do it properly. If it's just the litter smell you may be much better off then my issue though. (check: Oransi TrueCarbon 200c Air Purifier if you only want oder control). Best advice I have seen so far is to change cat litter. I'm experimenting with that now; switched from corn based cat litter to Arm & Hamer Clump & Seal - so far the cats love it and I haven't had any major stinks BUT it has only been two days. (in fact the cats have exclusively choose this litter box other the other with the corn based litter). After much research I did order an Air Purifier as well since I want better air quality and to reduce any cat allergens in the air for cat allergy visitors - got the Winix 9800 coming. Also looked hard at Conway. Let us know how you make out once you get a plan together.
r/AirPurifiers • Best Air Purifier for Dog Trachea Collapse and Cat Litter Box Odor? ->I love my Winix. Quiet and effective. Also great for smells and smoke. I have large one in the main room and smaller ones in the bedrooms.
r/Allergies • Advice on choosing the best air purifier for allergies commonly loved right now? Do they really help? ->Mine has no specific setting for smoke. I have both the larger model with plazmawave (zero idea if that makes any difference) and the smaller models without that added feature. They all will filter outdoor smoke, including wildfire, quickly.
r/Allergies • Advice on choosing the best air purifier for allergies commonly loved right now? Do they really help? ->I rent with all hard wood/laminate floors. And a long haired cat. And I have sinus allergy issues. I have an air purifier in the main room and bedrooms. Couldn't live without them. I have Winix. They get me through wildfire season too.
r/CleaningTips • Are Air Purifiers worth it? ->I have 3 air purifiers in my house and my sinus/allergies are still exploding this really bad this year.
r/Allergies • To people with allergies, what is the best air purifier you've tried? ->The PlasmaWave I looked at used an ionizer which is a huge no for me.
r/AirPurifiers • Is this a good deal and do you recommend this air purifier? ->PlasmaWave is just a glorified ionizer. I personally cannot stand the scent of ionizers, it gives me headaches.
r/AirPurifiers • Is this a good deal and do you recommend this air purifier? ->I’ve been using my Winix with Plasmawave since 2019 without issue, and that includes moving about once per year. These units have held up to that. 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. I also have pets. These reduce any odors from that, and they are at what one might consider end of life for a typical air filter system. 5 years is typical. 10 is incredible. I am not washing the pre-filter nearly as often as I should and am slow to replace the carbon and HEPA filters sometimes, so 5+ is just astounding in my case.
r/AirPurifiers • VEWiOR on sale! Should I get it or stick to Winix as my first? ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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