Bryan Johnson· Author
Having a great HVAC filter in your home is the best thing you can do for air quality.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Having a great HVAC filter in your home is the best thing you can do for air quality.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
the point that you made about um the HVAC, Brian, is important. That's the best tool you can use to improve your indoor air quality is just making sure you have an adequate filter on your HVAC.
The air filters are a nice add-on, but really your HVAC system should be your first line of defense for air quality.