Purivortex AC400 Air Purifiers Replacement Filter H13 True HEPA Technology High Efficiency

Great!

I love these filters. They run very quietly even at the highest setting and last about two months running at nighttime. When the red light comes on to let you know it's time to change it out, they are very dirty compared to the new one. It also makes the room cooler from the cool air that flows out from your machine. I really love them for the price and quality.

If you are going to run a HEPA, replace your filters. These were great during the smoke in the northeast from the fires in Canada - particulate levels in the house were very low partly thanks to the two units I have in the main living area. These are great, fit well, and do a good job picking up dust and fine particles.

I love this product actually I’m just about to buy a couple more. They last forever, considering the amount of debris that’s in your air in your personal space. And mine there’s a lot and they worked great.