Winix Replacement Filter B For 9500, U300

Last year when I received this filter cartridge the cassette tabs were not centered. There was no seal built into the cassette outside perimeter. The correct filter part number, according to Winix, is 114190 filter D not B. But all the filter parts fit the original cassette which I reused. The issue is one cannot find filter D. Not sure why the correct filter unit is no available.

Expensive, but necessary. I’d been using the filter that came with the original air filter for over 18 months. I vacuumed it out a few times, especially since I got a dog that I am a little bit allergic to (but he’s so cute. I am powerless). I have owned two other HEPA air purifiers prior to the Winix 9500, and this one is my favourite. On the turbo setting it’s loud-ish, but all of the other settings are very quiet, and I like to run my filter most of the time. I almost bought a knock-off version of this filter as the replacement, but I decided against it. It didn’t seem worth the risk to save $20. These filters are insanely expensive, but if this is what it costs every 18 months, then I’m going to keep on doing it.

One more thing – the smell reduction from this filter is nothing to sniff at. My room never smells doggy, or sweaty if I’ve left gym clothes out, or any other kind of stinky. The size 21 Winix replacement filter cassette really does deal with those kinds of smells.

I can now confirm that the unit may not fit all versions of the 9500. The filter casing in my filter is beige but the unit you receive is black, which I believe denotes that this fits another version of the 9500 because the grab handles are different. Because of this, the black casing will not fit my machine. So I had to swap out the filter components which only takes minutes to do. But as a great bonus, the black cartridge components are much better in quality, especially the activated carbon filter! So don’t despair if you get the back cartridge and your original was beige, with a little bit of effort you end up with a better filter!

It’s always risky when you’re buying things off of Amazon, lol. But, unfortunately, Winix doesn’t make the model of the HEPA filter that I have.. (which is the Winix PlasmaWave 9500 Ultimate Pet Air Purifier “WAC9500”)
I did purchase replacement filter from Amazon before this specific one from another seller/brand and it seemed fine in the beginning, though the tabs did not fit exactly in the right place it was supposed to..
(and same with this one as well, the tabs aren’t placed in the correct spot, where it actually should fit into, but that doesn’t seem to affect the actually fit or filter in any way.
I’ve seen reviews in the past about ppl mentioning and complaining of how the tabs aren’t in the correct spot, but honestly it still fits and it doesn’t seem to affect how the air filter runs and works at all in any way in my opinion)
But, back to what I was first trying to say, I did purchase a replacement filter from a different seller/brand then this one and I thought it was fine at first, but in the end, I finally found out that it was crap because you’re able to take out the carbon filter that’s in the back and wash it and put it back into the cassette and when I went to go and do that. I noticed that the material that was on the perimeter/border was made out of literally like construction paper type of material and obviously when I washed it just all started coming apart. So, I was definitely nervous about my second go around and trying to find a replacement filter. (I’m pretty sure they sell the replacement filter for the model that I have on the official Winix site, I think, and I can’t remember exactly, but if I purchased it off of Amazon, then that means that it was just a lot more cheaper, lol.) so, I had the option of paying more for the one on their official site or trying to go and find one on Amazon that will actually be a filter that wasn’t made from crap and actually worked like the original one (except for that tiny ”tab” issue that really isn’t an issue) and after many many comparing and using Fakespot, I came across this replacement filter. And of course, the first thing that I did when it was delivered to me I made sure that the back coat set that you can take out and wash every three months or so was made of good material, and not like the first one that I purchased and it seems to me like it’s made out of good strong material and not like the construction paper type of stuff that it was made out of from my previous one. I haven’t gotten around to actually washing it yet, but I can just tell by the look and feel of what the filter is made out of. I just know that it’s not going to fall apart like the last one did… (hopefully!!)
I guess I’ll have to write another new review after I get a chance to actually wash the carbon filter and see how everything holds up but I have a feeling that this time around there won’t be any problems, but like I said, if there are any problems when I get around to it, I will make sure to update and let you guys know!

It is perfect but very pricey!

This works perfectly in our 9500. We did not experience the gas-like smell as mentioned by previous reviews. I love how it fits exactly into the unit with no gaps around the side. Thus 100% of the air circulated thru your air purifier is being cleaned. You can remove the entire filter that comes with your unit (grey colored) and replace it with the new filter (black colored). Per Winix customer service, you can just discard the old filter as it should no longer be used after one year. Customer service also recommended that I remove the front and back filters of my replacement for cleaning every 3 months (the white inner filter cannot be washed only the front and back filters). We are extremely satisfied with this filter…we purchased off market brand replacements in the past but the sizing was not accurate and there are gaps around the sides. It’s worth paying more for this filter.

Fits my winix perfectly, and definitely does the job. I buy a new one once a year