2 ms·
> Any little filter that you can stand in the corner can't do much to clean the air in the room. It may remove some large items like pet dander. A consumer-gra
by peferron 7y ago
> Any little filter that you can stand in the corner can't do much to clean the air in the room. It may remove some large items like pet dander.
A consumer-grade HEPA air purifier (DIY or < $200 on Amazon) against a wall in your bedroom will commonly cut PM 2.5 concentrations by 10x in a few hours if you keep your windows and doors closed.
Source: I own a PM 2.5 counter and have operated air purifiers in China smog and California wildfires. There's also plenty of evidence out there.