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“Contra Binder on far-UVC and filtration” by jefftk
Damon Binder recently
wrote
up an argument for prioritizing air filtration over
far-UVC for pathogen control:
UVC and filtration are close substitutes—both deliver effective air
changes per hour, both reduce airborne pathogen concentrations by the
same amount per eACH—and on current pricing, filtration is cheaper.
There's a lot of good stuff in his analysis, but I see [1] three
considerations that really change the bottom line:
Cost is straightforward. Binder priced far-UVC based on the
high-quality Care222 lamp with the Krypton-11 at $2,500, but
there's a much cheaper option, the Aerolamp at $500.
It's also moderately higher output.
Binder analyzes a 30m2 room with a 2.5m ceiling. I'll assume this
means 6x5x2.5. If I configure Illuminate with an Aerolamp
in one corner pointed 0.5m above the far corner the installation is
within TLVs and I get a median effective number of hourly air changes
(eACH) of 11.6. The lamp degrades approximately
linearly over Binder's 11,000 hour evaluation period down to 70%
capacity, so we're averaging an eACH of [...]
---
First published:
April 27th, 2026
Source:
https://www.lesswrong.com/posts/wkeXF6xEL7bLnwpWG/contra-binder-on-far-uvc-and-filtration
---
Narrated by TYPE III AUDIO.
---
Images from the article:
Apple Podcasts and Spotify do not show images in the episode description. Try Pocket Casts, or another podcast app.
View all episodes
By LessWrongDamon Binder recently
wrote
up an argument for prioritizing air filtration over
far-UVC for pathogen control:
UVC and filtration are close substitutes—both deliver effective air
changes per hour, both reduce airborne pathogen concentrations by the
same amount per eACH—and on current pricing, filtration is cheaper.
There's a lot of good stuff in his analysis, but I see [1] three
considerations that really change the bottom line:
Cost is straightforward. Binder priced far-UVC based on the
high-quality Care222 lamp with the Krypton-11 at $2,500, but
there's a much cheaper option, the Aerolamp at $500.
It's also moderately higher output.
Binder analyzes a 30m2 room with a 2.5m ceiling. I'll assume this
means 6x5x2.5. If I configure Illuminate with an Aerolamp
in one corner pointed 0.5m above the far corner the installation is
within TLVs and I get a median effective number of hourly air changes
(eACH) of 11.6. The lamp degrades approximately
linearly over Binder's 11,000 hour evaluation period down to 70%
capacity, so we're averaging an eACH of [...]
---
First published:
April 27th, 2026
Source:
https://www.lesswrong.com/posts/wkeXF6xEL7bLnwpWG/contra-binder-on-far-uvc-and-filtration
---
Narrated by TYPE III AUDIO.
---
Images from the article:
Apple Podcasts and Spotify do not show images in the episode description. Try Pocket Casts, or another podcast app.
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