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Johannes Ernst /
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2023-09-21 04:33:41

Johannes Ernst on Nostr: According to my indoor PurpleAir sensor, what’s in my office is mostly particulates ...

According to my indoor PurpleAir sensor, what’s in my office is mostly particulates below a couple of μm, clustered between 0.3 and 1 μm. But my MERV 13 air filter isn’t very good at that size any more, letting half of particles pass according to the spec.

I’m failing to find a higher rated air filter, such as MERV 16, that looks even remotely like it is made for consumer / home applications whether in HVAC system or standalone. Does such a thing exist, anybody have one?

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