Aluminum Frame PC Fan Corsi-Rosenthal Build (2023)
After three generations of DIY air cleaner cubes, Zack Deis designed a quieter, more professional-looking version using a custom aluminum frame and six PC fans. The build costs around $300–350 CAD, assembles in 30 minutes, and features easy filter replacement. It's been running in homes and offices for over a year, offering a 'buy it for life' alternative to commercial units.
The 'buy it for life' design with easy component part replacement and highly accessible filters are very attractive features.
- Nukit
If you want to DIY these there's a FOSS (GPLv3) parametric builder web app that will output files for 3D printing, lasercutting, or handcut foamcore and calculate the performance of different configurations for you:
https://www.filterboxbuilder.com
There's no real performance difference between DIY and metal PC fan filter boxes, just durability.
- Youden
A YouTuber, Joel Creates, recently developed a filter that can be assembled from furnace filters, 3D printed parts, O-rings and PC fans: https://youtu.be/GpA7-EJpKWU
Files can be purchased by backing the Kickstarter but they won't be sent until November: https://www.kickstarter.com/projects/joelcreates/oddcube-air...
I think this could be substantially cheaper than a build based on a PC case.
- xnx
> The total cost of these filter boxes are somewhere around the $300-$350 CAD range
About the same as a Coway