Germ Guardian FLT4100 True HEPA Genuine Air Purifier Replacement Filter E for GermGuardian AC4100, AC4150P, AC4150BL, and More

These filters work great, easy to change from the machine. They help breathing easier in the house. Fits perfectly in the germ gaurdian air purifier. Noise level is a perfect for a typical baby white noise machine.

Great product

Got it on subscription. Works well.

Fits perfectly, as expected. They last pretty long too, usually I'll get to the six month lifespan and the inside still looks relatively clean so I wonder if I even need to replace it (sometimes I do let it go up to eight months without any issues, even with it running almost 24/7). I was always a bit hesitant to replace them since these can get a bit expensive, but last time I bought new filters I went with an off-brand since they had two packs for only $16, but they didn't fit properly and after about four or five months the inside was dark grey and looked way worse than these ever have (not sure if it's the filter quality, or due to the improper fit, maybe both). With these (the official filters) I've never had that problem, and you can usually smell the difference in the air. I'd replace your UV light too, those last way longer than the filters but if yours is burnt out then it's definitely worth buying a new one.

Works as expected and keeps my air purifier running well. I can definitely tell the difference in air quality. Only reason for 4 stars is the price could be a bit lower, but they are genuine and reliable.

I have been using these filters for about a year now. They are designed for a smaller air purifier and are suitable for small rooms. The life of the filters can be extended by using a vacuum attachment directly on the filter. I also clean out the interior of the purifier each time I actually replace the filter. The filters are simple to use. They just pop right in.

Works great

Good