
Pros & Cons: Box fan Corsi models are the
cheapest and easiest-to-build DIY air purifiers,
with an easily sourced BOM and short build time.
They are the quickest to deploy in an airborne
contaminant emergency, such as wildfire smoke.
However, when operated on the highest setting
the box fan Corsi can be loud, causing it to be
turned off in high-risk indoor areas. The louder
the fan, the more likely it is to be turned off. The
most effective cleaner is the one that’s actually
running.
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Lancet Covid-19 Commission, Festucarubra CC BY-SA 4.0, Shiven Taneja, MarijaMladenović
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