>>103253539
>>103251145
>chinese junk
Every consumer 'air purifier' is Chinese junk that gets BTFO by DIY units because their air exchange rate is fucking atrocious. This is because they all use HEPA filters which are far too dense for a good air exchange rate + carbon filters which add even more resistance for no gain.
You're better off just opening your windows for an hour to deal with VOCs (carbon filter target) unless you live in a Chinese or Indian city.

Here is what you need fundamentally:

Basic (but noisy) Corsi-Rosenthal box
>any box fan of reasonable quality
>a shroud to channel the airflow over the fan
>MERV 13 20"x20"x1"
>see: any of the dozens of corsi-rosenthal tutorials

Improved design (quieter but harder to build)
>some sort of 14" fan
>a shroud to channel the airflow over the fan
>MERV 13 16"x25"x1"
>see: this autists tutorial for the design and explanation
https://www.youtube.com/watch?v=KxPk8yOH-z4

BONUS ROUND
>use hot glue instead of tape as it off-gasses little to no VOCs
>why MERV 13 instead of HEPA?
While it doesn't filter down to the same level as HEPA there is much less resistance to overcome and therefore more overall air is exchanged through MERV 13 filters. We're not filtering 99% of toxic particulates, we're just trying to reduce allergens and ambient residential dust.

>>103253539
>even chinese junk will work
no
>hepa
lmao
>muh ozone, electrostatic, ion air filter tech
Not only are these features a meme, they're downright toxic and spew newly created VOCs out into the room you use them in.

>>103253701
>doesn't contribute anything valuable
>muh dunning-kruger
faggot

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