Testing different furnace filters. 12:54 video:
https://www.youtube.com/watch?v=RkjRKIRva58
Previously:
https://www.homemadetools.net/forum/...068#post164793
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Testing different furnace filters. 12:54 video:
https://www.youtube.com/watch?v=RkjRKIRva58
Previously:
https://www.homemadetools.net/forum/...068#post164793
Project Farm is one of the best channels on Youtube. That guy does spectacular work.
No real surprises, we use very coarse panel filters to stop insect wildlife followed by spun fibre 'bulk sheet' 2" thick for coarse dust, then a finer pleated filter before the final HEPA stage (6" deep), but then we are aiming for Class 10 cleanroom standard air, often we make better than Class 1, until people enter the room...