Hello Jas!

On 04 Jul 2022, Jas Hud said the following...
 JH> i saw this on youtube and i gave it a try. it's the cheapest way to make
 JH> an expensive-level filter.   get a new box fan and then get a 20x20
 JH> furnance filter. get a merv 13 filter or better.   you put it on the
 JH> BACK, not the front.

Yep, looks like it should do the job!

The cube version kind of reminds me of the one I have:
https://www.mi.com/global/mi-air-purifier-3H/

:-D

It's good as a fan but less as an air purifier. My old Electrolux had a built-in
ozone generator -- that one really made the air fresh, and I wish I had kept
it... This one? Can't even filter out some cigarette smoke from the next
apartment entering through the ventilation inlets below the windows,
despite all the laser yada yada. Gladly detects and indicates air pollution but
doesn't switch to full speed to tackle it in time, and there's no way to set the
desired target level.

Now you know why I haven't been very keen on buying a new filter for it... Which
by the way has a built in NFC tag to keep you from getting a pirate filter (or
perhaps even reusing it after cleaning it -- not sure about that).

So, for now, it's just a glorified fan. And an expensive one at that... 

Best regards
Zip

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