Homemade air purifiers can filter air faster, making them an affordable alternative to more expensive commercial products.

They also provide tips for making an efficient DIY air filtration unit. Here are the instructions: If you need a visual, here are two videos that may help. How to build a box fan HEPA filter ...

Which is why [Adam Kelly] decided to design this DIY HEPA air purifier ... “lid” which would position the fan so it draws air through the center of the filter. In terms of testing, [Adam ...

Corsi hoped to reach as many people as possible who couldn’t put down hundreds of dollars for a commercial HEPA air filter. The DIY solution ... specialist Jim Rosenthal. The CR Box comprises four air ...

Corsi hoped to reach as many people as possible who couldn't put down hundreds of dollars for a commercial HEPA air filter. The DIY solution ... and a box fan to draw air through the filters ...

Known as the Corsi-Rosenthal Box, the cost-effective air filter was originally created to filter particles containing infectious viruses in indoor spaces.