I agree on principle. There are iterations on this concept that are much quieter, are visually more palatable, and still have high airflow.

But that one costs $400, for that money you can buy a commercial / professional / design filter too. The Corsi-Rosenthal one is <$100.

If volume is a problem, I'm sure one can lower the fan speed below the lowest setting with some electronics knowledge.

	▲	frakkingcylons 5 hours ago \| parent [-]
		It's $230 with just the parts. Filters will cost about $40 for two. So like $270 and it's much quieter than commercial purifiers at a higher CFM.