Sadly It most probably a sham,
We did test on this as it’s a new nice shiny toys for marketing with covid, doesn’t work because UV take to much time kill stuff and air move too fast in your system
To get the time for this be efficient you need some weird contraption in the airflow to reduce the speed but doing so you hvac system are wayyy less efficient meaning nobody going to do that especially when they can sell it without any need to prove that’s it’s working at all (in normal operation is the key word) as it’s unregulated
Don’t get me wrong there’s surely a UV light in operation in there but it’s not doing anything relevant
Source : HVAC engineer in R&D
Edit : I’m talking specifically for airborne virus killing claim, fixed surface killing inside the system to prevent bacteria growth can work fine
Sadly It most probably a sham,We did test on this as it’s a new nice shiny toys for marketing with covid, doesn’t work because UV take to much time kill stuff and air move too fast in your systemTo get the time for this be efficient you need some weird contraption in the airflow to reduce the speed but doing so you hvac system are wayyy less efficient meaning nobody going to do that especially when they can sell it without any need to prove that’s it’s working at all (in normal operation is the key word) as it’s unregulatedDon’t get me wrong there’s surely a UV light in operation in there but it’s not doing anything relevantSource : HVAC engineer in R&DEdit : I’m talking specifically for airborne virus killing claim, fixed surface killing inside the system to prevent bacteria growth can work fine