Thanks Jeff for the post! I completely missed the Aerolamp and have now updated my post to include it. I agree that UVC lamps scale better at larger rooms and that noise can be an issue for air filtration devices (though I think you may also somewhat overestimate the CADR decline for these devices when not operating at full power).
Thanks for updating the post! Some minor comments:
the $500 row reflects the cheapest current Care222-based fixture, not the price of a productized, FCC- and UL-8802-certified consumer product.
Good point! This is definitely an issue I’ve run into in talking to people about whether installing Aerolamps makes sense, and I was excited to learn they’re working on a new version that should both cost less and be certified.
Jeff Kaufman’s post reaches ~$53 per eACH for the Aerolamp using aerosol-k coronavirus susceptibility (Welch et al. (2022))
Not exactly: I used the median eACH value I got from Illuminate:
This gave me a median of 11.55 eACH, across 25 bacteria and viruses with a range from 0.442 to 44.06.
I also assume no replacement for the Aerolamp but use bench k
Why use bench-measured k? Isn’t that less realistic for real-world use? This isn’t something I know much about, though, and I’m just going with Illuminate’s defaults.
I think you may also somewhat overestimate the CADR decline for these devices when not operating at full power
Certainly possible, and I’d be happy to yield to lab testing on this, but in my DIY testing turning a AP-1512 from “high” to “medium” dropped CADR by 50%, and this AirFanta review found going from 56 dB to 45 dB dropped CADR by 40%.
Thanks Jeff for the post! I completely missed the Aerolamp and have now updated my post to include it. I agree that UVC lamps scale better at larger rooms and that noise can be an issue for air filtration devices (though I think you may also somewhat overestimate the CADR decline for these devices when not operating at full power).
Thanks for updating the post! Some minor comments:
Good point! This is definitely an issue I’ve run into in talking to people about whether installing Aerolamps makes sense, and I was excited to learn they’re working on a new version that should both cost less and be certified.
Not exactly: I used the median eACH value I got from Illuminate:
This gave me a median of 11.55 eACH, across 25 bacteria and viruses with a range from 0.442 to 44.06.
Why use bench-measured
k? Isn’t that less realistic for real-world use? This isn’t something I know much about, though, and I’m just going with Illuminate’s defaults.Certainly possible, and I’d be happy to yield to lab testing on this, but in my DIY testing turning a AP-1512 from “high” to “medium” dropped CADR by 50%, and this AirFanta review found going from 56 dB to 45 dB dropped CADR by 40%.