Feels like v2 of this will be “ducted” in that it lives next to your air handler and comes on when you are circulating air.
(Like a reef tank sterilizer)
A ducted system seems like it kills a lot of the pros of this system compared to just putting an (effective, i.e. merv-13+) air filter in the ducted system to catch the viruses. And also other things that are bad for you like particles small enough to get where they shouldn't in your lungs.
Ducted UV systems for your HVAC exist now, and don't need to bother with the being UVC since the UV doesn't leave the system.
If I recall correctly my furnace guy quoted me less than $2k for a whole house system that attaches to the air intake on my furnace.
The advantage of far UVC over other UV air cleaning solutions is that it doesn't need to be ducted. This means that you can kill microbes right when they leave someone's mouth - you don't need to wait for them to be sucked through an air handler.