My collaborator Gus Tate suggested we work with our HEPA manufacturer to get smaller, square HEPAs. Now we’re convinced the DIY filter just got a lot cuter:
Cute and kicks PM 2.5 in the pants.
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Thomas is an Associate Professor of Behavior Science at the University of Chicago Booth School of Business and the founder of Smart Air, a social enterprise to help people in China breathe clean air without shelling out thousands of dollars for expensive purifiers.
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Can we try for cuter yet?
How about taking a quiet little computer fan and adding one of those elastic-rimmed circular filters that you put on a gasmask-style respirator? The elasticated ones seem to be particle filters; maybe a carbon filter could go inside behind it.
OK, it would be smaller-throughput, and you’d have to change it more frequently, but it would be very cheap and you could run it off a solar panel. Could you possibly test such a thing?