I recently stayed in an apartment that didnt have central air so I created a corsi-rosenthal box since the smoke from the Canadian wildfires were so bad.

After 30 days of continuous use, with very minimal periods of it being turned off, this is what the filters look like!

It’s disgusting yet also so satisfying to see the filters get darker from debris, dust, and dirt.

Edit: typos

      • MeThisGuy@feddit.nl
        5·
        4 hours ago

        well…

        A 2022 study found the clean air delivery rate on the five-filter design was between 600 and 850 cubic feet (17–24 m3) per minute (depending on fan speed), costing roughly a tenth of commercial air filters.

        hope you can keep up!

      • prettybunnys@sh.itjust.works
        8·
        6 hours ago

        These have been around for a long time as DIY filters for folks, I remember seeing one of these on Reddit before comments were a thing.

        Once upon a time Reddit drove you to interact with other websites instead of shitposting your best hot take about the title of the post someone else didn’t even visit.

        Comments truly ruined Reddit

        • MeThisGuy@feddit.nl
          2·
          4 hours ago

          Long time ago I made my own activated carbon filter from plans I found online out of chicken wire, some duct parts, of course activated carbon, and pantyhose. got some funny looks when buying that last one, but it worked like a freaking charm.

      • huppakee@feddit.nl
        9·
        8 hours ago

        Someone posted a link to Wikipedia in the comments, came across their names:

        Richard Corsi, an environmental engineer and the incoming Dean of Engineering at the University of California, Davis

        Jim Rosenthal, the CEO of filter manufacturer Tex-Air Filters