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

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.

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.

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.

Easy to install, not terribly expensive and does what it is supposed to do. The amount of dust it catches is amazing.

This is a HEPA-rated air filter for a unit I use in my bedroom at night to help me sleep. After about 6 months use I needed to replace my worn filter for a new one. This one fit the bill. I suppose it cleans and filters the air, the filter sure looks like its battle-worn. So pop in the new one and I suppose its doing its job and cleaning the air I breath. Dont know if it works against Covid or not but taking no chances. My inside air is going to be fresh and clean with two different air filters running, both HEPA, as well as my home a/c unit with HEPA filter.

this is an air cleaner filter. it seems to work fine.

Perfect fit just as advertised

I always need this replacement it works so well

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

Work well