I've written up a more accessible version of the technique I use to perform at-home CADR tests in a test chamber. My current setup is a bit more advanced, it is automated and runs from a raspberry pi. Otherwise, it's the same. #AirFilterDev thewiss.blogspot.com/2022/11…

Some tests of Novonest and Arctic P12 fans w/ 16x25x2 Texair filters. These tests were with new filters and filters loaded by 7 months of 24/7 use with a HF-910 CR box. With new filters, the fans perform about the same but big difference with loaded filters! #AirFilterDev