Genuine Winix 115115 Replacement Filter A for C535, 5300-2, P300, 5300, White/Black

I decided to go OEM to ensure a good fit and am very satisfied with the product

Easy to install, filters amazing amount of dust in the air. We didn’t think our home was dusty, but we’re amazed.

Easy to replace in air filter unit just like the original. Bit of price premium compared to low cost no name brand offers. Worked as expected. Lasted as long as the originals it replaced. No funny odors.

This filter is NOT a proper, direct replacement for the CASSETTE HEPA filter that came with the new air cleaner. The original had two smaller paper filters and a honey combed charcoal filter, and all of the filters mounted together in a plastic cassette, with a front mounted Pre-Screen useful for catching pet hair. This replacement completely negates the cassette, the charcoal filter is just a sheet that you have to cut to fit, it has no support to keep it from pulling toward the fan, and the original filters pre-screen to catch pet hair has no cassette upon which to be attached, so one cant use it! I just bought FOUR of these filters for three U450s and one U300, and I am not happy about it. Advertising this filter as a replacement for the WINIX U450 and U300 is TOTALLY MISLEADING THE CONSUMER! It LOOKS like a replacement for the filters within the cassette, but it isnt. Again, this is NOT like the original filter unit that came with the WINIX U450 or U300 PlasmaWave Air Cleaner. If you dont need the pre-screen and are willing to use two charcoal filters, one before the paper filter to catch hair and one behind it, then it may work. Remember you have to trim the charcoal filters to fit. Use the paper filter as a template, if you choose to do this. I was going to send these back, but I ordered them for two different addresses and returning would be such a hassle that Ill just use them for a couple of months, and contact WINIX to find out how to order the CORRECT filters for my air cleaners. I will say that I am very disappointed with my purchase of these, but I should have contacted someone directly to ascertain these were correct, and I merely went with the reviews and pictures, assuming theyd work with the existing original cassettes. Live, Suffer, and Learn.

Like many others, I thought it didnt fit the 9500 at first. It does fit. The cartridge in the unit is a different filter pack. That can be ordered on Amazon too but it isnt required. It has washable carbon filters but last 1 year like this filter package does. Steps: 1. Take the cartridge out and set it aside. You can throw this whole thing away. 2. Put the white HEPA filter in with the arrow facing IN for airflow. 3. Put one of the 4 black carbon filters on top of the HEPA filter. 4. Replace the case. 5. Your done. In 3 months l, replace the black carbon filter. In a year buy this product again and start over. I wish this thing came with instructions.

Arrived before the original date due. Filters inserted very easily. We went with the original Winix filters because we loved the ones that came with it. I have allergies and needed something I could trust. Will buy again!!

The actual white filter looks and works fine. But the features of the filter, which are supposed to facilitate proper installation actually do the opposite: they confuse. People who made it either had QA problems or simply did know what they were doing. The horizontal top of the filter has an arrow that says FRONT, implying that this arrow is supposed to point towards the front of the device. At the same time the vertical sides of the filter have little tabs, which are supposed to help to pull the filter out of the device. But if you obey the top arrow, these side tabs will end up inside the device. This makes no sense. at all. I presume that the little tabs are supposed to face outside, towards the front. This implies that the arrow on the top was actually meant to be an AIRFLOW arrow. It is just that some incompetent genius mislabeled this arrow is as FRONT instead of AIRFLOW. Treat that top arrow as AIRFLOW direction, install this filer with little tabs facing outside and it will work fine.

There are heaps of crappy knockoff filters for the 5500-2, and so many reviews written by so many poorly informed people. These actual Winix filters do fit the model 5500-2(and perfectly), they are thicker though, so you can only use this filter without the ridiculous carbon balls filter thing that comes with the Winix 5500-2 (that thing does nothing anyway-total gimmick). You can use this filter with the Winix 5500-2 with the regular carbon filters just fine. Just thought I’d leave an informed review to help others like me not have to read through oodles of bumbling reviews.

Really like the filter pack which has both filters in it. Ready for another 6 months and Amazon will send the next box when needed!

We have the WAC9500 Pet model, so I felt like I was taking a bit of a gamble given the reviews on how the filters would fit into this model. Rest assured they fit snuggly (you have to lose the old cartridge and put the new HEPA and carbon filters directly into the unit), and they work just as well as the $100 Winex replacement filter cartridge Ive previously purchased. After a couple of weeks of use, I can say I cant tell a difference between the two! No funny smells like a few reviews said, maybe just a plastic smell for the first hour after installation but hardly noticeable. Weve had this Winex device in our main living area for over 3 years now, in our 600 sqft apartment and now in our 2500 sqft house, and it does wonders for my husbands pet allergies and both of our seasonal troubles. I will update this review if any issues come about, but otherwise I will definitely buy these filters again.