Sign up to save your podcasts
Or
Share “Better Air Purifiers” by jefftk
Share to email
Share to Facebook
Share to X
Share to email
Share to Facebook
Share to X
Or
“Better Air Purifiers” by jefftk
Are you looking for a project where you could substantially improve
indoor air quality, with benefits both to general health and reducing
pandemic risk?
I've written
a bunch
about
air
purifiers
over the past few years, and its frustrating how bad commercial
market is.
The most glaring problem is the widespread use of HEPA filters. These
are very effective filters that, unavoidably, offer significant
resistance to air flow. HEPA is a great option for filtering air in
single pass, such as with an outdoor air intake or a biosafety
cabinet, but it's the wrong set of tradeoffs for cleaning the air
that's already in the room. Air passing through a HEPA filter removes
99.97% of particles, but then it's mixed back in with the rest of the
room air. If you can instead remove 99% of particles from 2% more
air, or 90% from 15% more [...]
---
First published:
May 11th, 2025
Source:
https://www.lesswrong.com/posts/bBX46cBpbruv2kJh5/better-air-purifiers
---
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 LessWrongAre you looking for a project where you could substantially improve
indoor air quality, with benefits both to general health and reducing
pandemic risk?
I've written
a bunch
about
air
purifiers
over the past few years, and its frustrating how bad commercial
market is.
The most glaring problem is the widespread use of HEPA filters. These
are very effective filters that, unavoidably, offer significant
resistance to air flow. HEPA is a great option for filtering air in
single pass, such as with an outdoor air intake or a biosafety
cabinet, but it's the wrong set of tradeoffs for cleaning the air
that's already in the room. Air passing through a HEPA filter removes
99.97% of particles, but then it's mixed back in with the rest of the
room air. If you can instead remove 99% of particles from 2% more
air, or 90% from 15% more [...]
---
First published:
May 11th, 2025
Source:
https://www.lesswrong.com/posts/bBX46cBpbruv2kJh5/better-air-purifiers
---
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.
More shows like LessWrong (30+ Karma)
View all
Making Sense with Sam Harris
26,367 Listeners
Conversations with Tyler
2,397 Listeners
The Peter Attia Drive
7,779 Listeners
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
4,103 Listeners
ManifoldOne
87 Listeners
Your Undivided Attention
1,442 Listeners
All-In with Chamath, Jason, Sacks & Friedberg
8,778 Listeners
Machine Learning Street Talk (MLST)
89 Listeners
Dwarkesh Podcast
355 Listeners
Hard Fork
5,370 Listeners
The Ezra Klein Show
15,053 Listeners
Moonshots with Peter Diamandis
460 Listeners
No Priors: Artificial Intelligence | Technology | Startups
126 Listeners
Latent Space: The AI Engineer Podcast
64 Listeners
BG2Pod with Brad Gerstner and Bill Gurley
432 Listeners