2 ms·
From my understanding the biggest difference is the blades not getting covered in grime, because you're pre-filtering the air. I've also heard airflow dynamics
by SamBam 5y ago
From my understanding the biggest difference is the blades not getting covered in grime, because you're pre-filtering the air.
I've also heard airflow dynamics arguments, but I feel like I've heard them argued in both directions.
- ncmncm 5y agoYou can use two fans, one on intake, one on exhaust. Or three, if you have a particularly fine filter. But building another whole unit to run in another room might be better. With a #9, one-inch filter, a single fan does fine.