3 ms·
The primitive "filter taped to box fan" model worked fine for me in Portland during the massive fires of 2020. Maybe not the greatest thing for the fan, but my
by channel_t 3y ago
The primitive "filter taped to box fan" model worked fine for me in Portland during the massive fires of 2020. Maybe not the greatest thing for the fan, but my indoor AQI sensor would go from reading like 250+ to under 100 pretty quickly. And of course, the filters basically turned black in a short period of time.