At DYNOMIGHT is the design for a do it yourself air purifier called The Cuboid:
I love box-fan based air purifiers. They are cheap, trivial to build, and people around the world have done experiments to show they actually work.
Still, box-fan purifiers have two downsides: They create a lot of noise, and they consume a fair amount of electricity.
I wanted a new design that preserves the best aspects of using a box-fan:
- Easily built with no tools.
- No proprietary parts.
- Good at purifying the air.
The design should also fix the worst parts of using a box fan:
- Make less noise.
- Use less electricity.
I think I’ve found such a design. Behold, the Cuboid
All the instructions and test data are included in the article.
The only significant cost is the fan ($30) and the filters ($70 for 4). This is more expensive than a box fan design, where the fan costs $19 and you only need 2 or 3 filters.
See the complete article here.