DIY HEPA air Filter VS Festool SYS-AIR M Mobile Air Purifier | Can I Beat Them?

I build my DIY HEPA Air Cleaner again, test different filter setup and compare it's performance with the new pro level Festool SYS-Air m Air Purifier that I could borrow from a friend! While testing the different setups I did learn a lot about air filtration. That is something I will need to further improve my DIY Centrifugal Dust Separator that I have build last year. 👉 Watch me build the Centrifugal Separator in this video:    • I Built my Centrifugal Dust Separator, Aga...   👉 Definitely check ‪@johncimbala‬ for Educational videos about Air Pollution and Indoor Air Quality. Cost breakdown: € 180,- RUCK ETAMASTER EM-250 € 33,41 Airbo AC2 AERO filter 8 € 71,22 Airbo AC2 AERO filter 9 €159,80 Airbo AC2 HEPA filter 13 Total = € 444,43 Festool sys-air m air purifier: Around € 800,- to € 966,79 depending on the webshop.