Far-UVC is something people have
talked about for years in a "that would be great, if you could buy it"
sort of way. Coming soon, once someone actually makes a good
product. But the future is now, and it costs $500.





Many diseases spread through the air, which is inconvenient for us as
creatures that breathe air. You can go outside, where the air is too
dilute to spread things well, but it's cold out there, and sometimes
wet. You can run an air purifier, but cleaning lots of air without
lots of noise is still the world of DIY projects. Ideally you could just
shine some light, perhaps in the 222-nm
range, which would leave people alone but kill the viruses [1] and
bacteria. Yes, let's do that!





Last year if you asked "if far-UV is so great, why isn't it
everywhere?" one of your answers would be:






There are very few providers, and hardly any of them sell an
off-the-shelf product. You usually can't just buy a lamp to try it
out—you have to call the company, get a consultation, and often have
someone from the company come install the lamp. It's a [...] ---
First published:
December 13th, 2025

Source:
https://www.lesswrong.com/posts/fMbk6tFH7KPJEwcdi/you-can-just-buy-far-uvc
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Narrated by TYPE III AUDIO.
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