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

Purchased this E style replacement filter pack for our Germ Guardian AC4100 (the little one that looks more like a speaker). Have had the air purifier for just about a year, but officially only has about 5 months of use on it. Both filters were quite dirty, so figured it was time to replace them. As far as I can tell, this was the genuine filter set for our purifier. Visually the same as the old filters (minus all the nasty filth), and fit into the purifier exactly the same. Have had the new filters in for half a day and can notice a positive change in the smell in the room, and the purifier seems to be running just a little quieter. Old filters may have had a little restriction, or I may just be imagining things.

Used to be much better quality- the top and bottom of the filter used to have some foam padding for a snug tight fit. Now the fit doesnt seem air tight. Also the pre-filter is shedding black debris everywhere. Its so thin and poorly made. When you put your hand on it youre fingers are covered with black debris? Was it always like this?

I always need this replacement it works so well

These Guardian air purifier filters are the absolute best. Even though they are small and for a smaller air purifier, they do an outstanding job at cleaning the air and making it fresh and breathable, especially for people like me who have allergies and asthma. And they do this even in a house with a lot of animals. I’m so impressed by how well these air filters work. I keep coming back and getting this brand filter for my air purifier because it simply does the job right. Highly recommend.

This filter definitely works. From dust, dander, smoke, particles in the air etc. There is no match for this unit. I would recommend a different unit if you are using this for your sleep schedule; near your bed. This is not the most quiet machine ever but it is not super loud. Right in the middle. I would consider this unit to be a Post Malone of the air scrubber world.

This fit my GermGuardian model AC4100 like a glove. Easy to install - simply pop off the back over, remove the old filter, pay attention to the arrows and put the cover back on. Authentic filter replacement; will purchase again.

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.

These filters last for less time than they say they are supposed to. And, the charcoal filters are not as effective as some of the other brands available. However, they do work well for about a month & 1/2. Nowhere near the 6months as stated on their product information! Ive found that it does a much better job when I use their HEPA filter with another brand of charcoal filter. If you are thinking of buying an air filter from Germguardian, Id suggest that you buy one to two sizes larger than they recommend for small rooms.

It works as expected. My last filter I changed at 90 days just because of COVID-19 pandemic. It wasnt gunky dirty but there was visible dirt just from running it a few hours a day. I wanted to change it to get rid of any virus germs that could have been lingering there.

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.