It seems like there’s always something in our air these days, which is probably why air purifiers have become so popular. With so many on the market, though, it can be hard to distinguish which is worth investing in. And while we’ve previously put several devices to the test, we were interested in learning more about the filters themselves. After all, an air purifier is basically just a filter and a fan, so it seems like the filters are pretty important. We tested the Molekule Air Pro Filter, Levoit Core 300 Filter, Blueair Blue Pure 411 Filter, GermGuardian FLT5000 Filter, and Honeywell HEPA Air Purifier Filter Value Kit – and were blown away by the technology in Molekule’s Air Pro filter. Here’s why we recommend it over the competition…