this post was submitted on 08 Jul 2025
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Mildly Interesting

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The filters in my Corsi-Rosenthal Box look after 30 days of continuous use... (europe.pub)
submitted 3 months ago* (last edited 3 months ago) by ITeeTechMonkey@lemmy.world to c/mildlyinteresting@lemmy.world
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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

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[–] amino@lemmy.blahaj.zone 7 points 3 months ago (1 children)

the PC fan version uses 10W max

[–] anomnom@sh.itjust.works 3 points 3 months ago

Techingredients just did a video on ceiling fan designs and realized that DC motors are vastly more efficient.

They also figured the cost savings to pay for the motor change, and it didn’t take long to pay off.

https://www.techingredients.com/videos