Is It Effective?
Not sure if it kills viruses as I have no way to test, but I’m 70 and still here (no COVID).  Easy to Install; I rotated mine 90 degrees since my furnace “lays” on its side in the attic. I also connect the power cord to the furnace blower circuit so that it’s only on when the blower is running. Hopefully this will save some energy and extend bulb life. Well worth the cost assuming the UVC bulbs do the job.
Rating: 5 stars