Lut Raskin

@lutraskin.bsky.social

Professor of Environmental Engineering at the University of Michigan. We harness the power of microorganisms to treat water and recover resources from waste stream. https://raskinumich.com/

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💯Clean air delivery rate (CADR) is more important than HEPA rating! I have been buying portable air cleaners for the lab and home that are not HEPA-level but offer a high CADR per dollar spent and low noise. Marwa Zaatari's comparison chart from 2021 is a good way to think about this.

CADR vs. first-year cost of different air cleaners, colored by noise
Aaron Collins@masknerd.bsky.social · 2y ago

[1/2] All that matters is CADR! Ignore things super-hyper-mega HEPA. Often times a filter that only provides 70-80% actually provides more clean air than a filter that is 99.97%(HEPA). I used a 16x20 3M filter taped to a Taotronic AP-003(with no internal HEPA installed) and got a 30% boost in CADR.