HEPA Air Purifiers
Cluster focuses on recommendations, DIY builds like box fans with HEPA filters, and debates on the effectiveness of air purifiers for removing indoor pollutants, smoke, dust, and particles.
Activity Over Time
Top Contributors
Keywords
Sample Comments
A HEPA filter should work pretty well too
You could probably buy a box fan and tape a HEPA filter in front.
I'd go for a HEPA air filter instead, some also have UV light inside
Just buy a filtering fan already. They are cheap.
Thank you, we actually have a fairly hefty HEPA filter so I'll set that up and see if it helps
Can't you just do this with a normal box fan and a hepa air filter you buy for 7usd at the market?
Do you have a cite for the air filters? I'm under the impression that stand alone air filters don't move enough air to be effective.
But that just removes the problem into making a fpp / hepa filter
Why can't we put HEPA purifiers in every room?
Be aware that according to the original Wirecutter tests on low mode it's significantly worse than doing nothing (filters ~6% of smoke particles vs ~15% that would have settled out if the fan inside wasn't disturbing the air), and it's significantly worse than $100 filters on high mode (filtering ~60% vs ~90% of smoke particles)