5 ms·
I wonder if you can put a filter on both sides of the box fan.
by tra3 8y ago
I wonder if you can put a filter on both sides of the box fan.
- TylerE 8y agoThere would be very very little gain from doing so, but you'd probably kill the motor. HEPA filters are very very very good. Running through 2 of them isn't going to pull much more out because there just isn't much more. Actually, you'd probably get less actual filtration due to the greatly reduced airflow.
- tra3 8y agoWhy would it kill the motor? Load is reduced when airflow is restricted. If the first filter reduces 90% of pollutants, can we assume that the second filter reduces an additional 90%?