Re:Infrared thermometers to screen for Covid: more marketing...
by amluto on Monday August 03, 2020 @06:50PM
(#24044418)
Are they cheap upfront? I would imagine that just sticking a UV lamp in your furnace manifold by poking a hole in the side risks rapid UV damage to your furnace. And, if you’re going to slice up the manifold to make it appropriate for UV, you might as well put in a proper filter box instead. A decent MERV 13 or 15 filter from Aprilaire or another major vendor is not very expensive.
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Re:Infrared thermometers to screen for Covid: more marketing...
by rainbowzootsuit on Monday August 03, 2020 @07:19PM
(#24044655)
UVC lamps are relatively inexpensive to install. Usually they're put before and/or after the cooling coil where, if you have a clean coil, the light will bounce through the fins and increase the path length of exposure. If it's not clean, the UVC helps to break down anything organic over time and cleans them up.
With a few exceptions of more complex units all of the recirculated air spends time passing through the coil.
UVC doesn't damage metal parts, but does effect some materials that would be common in residential installations
https://customer.honeywell.com/resources/techlit/TechLitDocu...
Re:Infrared thermometers to screen for Covid: more marketing...
by icelancer on Monday August 03, 2020 @07:14PM
(#24044616)
Yeah not too bad - a few hundred for reputable ones. Need to keep it far enough away from the filter, obviously, or risk damage over time (or just change out the filter more frequently).
I liken using UV-C (potentially) and a good filter as a defense-in-depth technique, just like masks, social distancing, sanitizer, temp checks (all which do very little on their own, but in the aggregate help).