Ha, I love it. I imagine spraying those into the rooms would be even worse though. And if you do it in an HVAC system you might as well just do the UV there too

Ha, I love it. I imagine spraying those into the rooms would be even worse though. And if you do it in an HVAC system you might as well just do the UV there too, in which case the ozone would break down before it was an issue. (And in fact could even be beneficial killing pathogens itself.) The main advantage of the near UV lights is that they can be inexpensively placed in locations that don't have good HVAC systems.