I think Thomas’s “Instead of using HEPA to ‘one-shot’ (original design intention) the air filtration task, the ‘few-shot’ approach with much higher through put with a MERV 13ish lvl of efficency is generally better” is mostly correct. I see that Dynomight’s IKEA filter investigations have also made a similar conclusion (although it is more in the case of HEPA vs MORE HEPA).
However, I didn’t want to 3D print/jerryrig an enclosure to fit in the recommended filters, and where I am, I couldn’t source a nice self-supporting (non-HEPA) filter that I can easily plop a fan onto. But if I had some more spare time, the cleanairkits folks that Zac mentioned built basically a “quieter rectangular box with fans on the small sides, and non-HEPA filters on the big sides”—and that’s what I want eventually.
I think Thomas’s “Instead of using HEPA to ‘one-shot’ (original design intention) the air filtration task, the ‘few-shot’ approach with much higher through put with a MERV 13ish lvl of efficency is generally better” is mostly correct. I see that Dynomight’s IKEA filter investigations have also made a similar conclusion (although it is more in the case of HEPA vs MORE HEPA).
However, I didn’t want to 3D print/jerryrig an enclosure to fit in the recommended filters, and where I am, I couldn’t source a nice self-supporting (non-HEPA) filter that I can easily plop a fan onto. But if I had some more spare time, the cleanairkits folks that Zac mentioned built basically a “quieter rectangular box with fans on the small sides, and non-HEPA filters on the big sides”—and that’s what I want eventually.