In reply to @jimrosenthal4

Smart Air

@smartairfilters · Twitter · 2022-12-29 16:07 UTC

@JimRosenthal4 Right on. 👍 Here's a 200-day test of what happens to the effectiveness of a HEPA filter *at cleaning an entire bedroom* over time. The clogging makes performance worse. https://smartairfilters.com/en/blog/hepa-lifespan-how-long-filters-last/