WinixA231 Air Purifier for Bedroom Up to 1110 Ft² in 1 Hr With Air Quality Monitor, True HEPA, Carbon Filter and Auto Mode, Captures Pet Allergies, Smoke, Dust

We’ve had this on a dresser in our room for about 3 or 4 years now, running continuously. For most of the time, I’ve had it on the “automatic” setting, which means it generally runs at medium speed, turning up to faster when it senses particulates in the air, then returning to medium. It works VERY well, and has reduced my allergies a great deal. The noise level is quite comfortable for us, but we don’t mind a soft fan sound. There are three manually set regular speeds, low, medium and high. The low speed is quite quiet but still a little louder than the night mode speed. If I switch it to night mode, it falls to whisper quiet, hardly noticeable.We use a genuine Winix filter in it, and replace it about every 9 months or so. Replacement is super easy.It has no weird sounds like another reviewer has mentioned, but runs smoothly and efficiently. We’re completely satisfied and would buy this same one again for certain.

I purchased this to reduce dust and particles in my bedroom. I was sneezing and coughing quite a bit and it was disrupting my sleep. This unit is quiet-ish with the noise similar to a white noise wind sound...not too loud but no louder than the separate sound machine I was already using. There is no "mechanical" noise from the machine. After about a week, I noticed that I am no longer sneezing or coughing in my bedroom and dust accumulation is minimal compared to before. My sleep is much better as well. My grandson was recently in my room and told me that the room smelled "fresh"...I am very happy with the purchase. I'm tracking how long the filter lasts. and am sure that it's a highly individualized duration. Hopefully, finding filter replacements and the cost will be reasonable.

I bought this air purifier as I have a mid-size bedroom (~120 feet; large enough that many smaller purifiers were not rated for that room size). I was also looking for an air purifier with HEPA filtration for allergies and filter changes that were reasonably priced. The official replacement filters run from about $45-50 depending on where you get them and last around a year (aftermarket filters are available and can be had for significantly cheaper, if you're willing to take your chances on those). Many other smaller air purifiers have filters that last for much shorter lengths of time and/or secondary pre-filters and end up costing more per year to run, so in the long term this filter will save you a little money there. Filter changes and cleanings are easy (you should vacuum or otherwise clean the filter every 2 months to extend its longevity), but the directions were a little unclear about how to orient the filter. Based on what I've found, the solid black side of the filter labeled BOTTOM should face the bottom cover of the machine.Noise levels with the filter are reasonable. The lowest speed on automatic is quite quiet and serves as nice background noise. Medium speed is louder but tolerable. High speed is loud, but it's never kicked on automatically for me.Note that this comes with PlasmaWave, which generates some ozone as a byproduct (though from what I've read, this is well below harmful levels). PlasmaWave can be toggled off. However, by default, whenever you turn the purifier on or wake it from sleep mode, PlasmaWave turns on. I would NOT recommend this model if this is would annoy you, but it's a non-issue for me.

I have the bigger version in the great room and it works great so I decided to buy this for my bedroom because it gets dusty in two days. It seems to work well but it gets really loud at times when running on high. That’s why I gave it 4 stars. I leave it on automatic so sometimes at night it gets louder when I’m sleeping. Unlike the bigger one I have in the great room which has a sensor that makes it go into night mode. This one has night mode but you have to manually set it. Otherwise it works great, my dust is less than ever and I can breathe better so it is worth it.

Easy to use. Quiet. Works well. Not sure how clean the air gets actually.

Its been almost 2 years since I purchased my Winix 231 air purifier. Im thrilled to say that it has been a fabulous purchase! Zero trouble & Zero glitches it just keeps going and is 100% worth the money! It does let me know if the filter needs attention! It also continues to sense the need to be mire aggressive when the environment requires a bit mire attention. The Winix is kept in my master bedroom and when I use any strong (that gives off strong fumes) cleaning product on my a en suite bathroom or any propellant spray in the area my Winix performs great automatically stepping up the power until said air invader has been removed! To prolong the life of my filters I turn the purifier off and either give a quick dusting or wipe the housing down with a damp cloth. On occasion between filter changes I remove the filter in use and take it out to the garage for a light vacuum to the outside of the filter screen to remove any build ip of dusty lint. Being in my main bedroom where linens are changed, clothing is hung/folded and my en suite bathroom where hair, makeup & etc are tended to, I create lots of air born stuff!The Winix and its filters definitely work hard to keep everything from dust , chemicals and odors in check!One of my best Amazon purches to date!!!

So far so good! No dry lips or hoarse voice on awakening! Seems to be a good product for removing dust, dander, and other irritants. Will let you know more later.