germguardian Guardian Technologies FLT41002PK FLT4100 HEPA Replacement Filter E for AC4100, AC4100CA AC4150BL, AC4150PCA, 2 pack, Black Air Purifier

My daughter left this machine when they moved to Japan. I almost sold it but I said “wait, I have a dog in my bedroom “! I bought this new filter- it for perfect. I love this machine!!

I had my filter replaced about a year ago. Longer than the recommended. But the charcoal filter this time is a lot harder than what it was previously. Im not sure why but its noted that the charcoal filter was also a bit creased towards the top of the filter. The box was not damaged in anyways so it wouldnt be due to shipping. Maybe its due to packaging. Anyhow, the filter functions fine and theres no smell either which is great. The HEPA filter is the same as what it was previously.

I always need this replacement it works so well

Aug. 2019 product recd. Update on prior reviews. Been ordering these filters multiple times for a very long time. The purifiers work so very well. Noticed that the pre-filters are getting thinner and thinner. The 2 I just received are tissue paper thin and many spots thin enough to see the pleats on the main filter thru. Will keep an eye going forward to see if the filters are made thicker (as they used to be). If not, this will cause the main filters to have to be replaced even more frequently. Not something I am willing to purchase more frequently if not necessary. Works wonderful and keeps the air cleaner then expected for a smaller unit. Filter is easy to install and has to be changed with your usage of the purifier. A great system.

We use this filter every night while our sons are sleeping. It’s aggravating to have to constantly check the pricing because it changes regularly. We are about to switch purifiers if I have to pay $20 a filter now when I can get the machine for sometimes as low as under $50.

Ive been buying these for a few years now and they just changed how the black filter is made. Im not a fan of the new material at face value. It looks like a way cheaper quality material and one that Ive never seen before in any HEPA filter. Im now happy about the change so far. Im still undecided if the change has degraded the quality of the filter in general. It also makes me question whether the white filter design was also cheapened. I was pretty happy with the Gem Guardian until now. UPDATE: Ive had this new filter in for about a week now and I was shocked how much dust was already on the black filter already. Im thinking this new style filter actually filters out more than the old one does so Im increasing my rating to 4 stars now. I also washed the black part and it didnt fall apart as expected and was surprisingly easier to clean than the older one. The old design would have dust getting stuck inside the holes of the filter and Id have to wash it for a while before i could get everythign out of it. The new one seemed to clean up much easier because the holes in the filter arent as big. It cleaned up well and didnt degrade like I expected. Overall Im actually liking the new design better now.

I first learned of this system when our daughter moved back home during her pregnancy and the first few months of our grandsons life. We really liked how well it worked and so got one for upstairs and one for downstairs. Changing these filters is super easy, and with the subscribe and save option you never have to worry about forgetting to. Really makes a difference in our home and we are very pleased with the results.

Works great

I do not have the means to test if this works but it filters my farts out of the air so thats cool. Very easy to change and use.

It works fine super easy to install and I can tell the difference in the air with this new filter.