Clorox UV Air Purifier

My RA installed a Clorox UV air purifier in the common room. It uses HEPA filtration combined with a UV-C lamp to clean the air. I can't see or smell the difference, but this pollen season was the first where I didn't wake up congested every morning. Either a coincidence or evidence the filter is working. About the size of a small trash can, the unit runs quietly enough on low that I forget it's on. On high it produces a noticeable hum that becomes white noise after a few minutes. I have concerns about the UV-C claims. Exposure time needed to neutralize airborne viruses is longer than what most consumer purifiers provide, and Clorox's marketing leans into the UV angle without publishing specific efficacy data. HEPA filtration is where the real value sits, capturing particles down to 0.3 microns. Technology is well-proven, so the UV component strikes me as more marketing than function. Filter replacement costs $30 every 3 months, adding $120 per year to operating cost. The app should track filter usage more precisely rather than just counting days since last replacement.