Which is why [Adam Kelly] decided to design this DIY HEPA air purifier that can be built for less than $100. That might still sound like a lot of money, but compared to the $500 sticker price he ...

states that DIY purifiers can be a temporary solution, particularly if no other options are available. The CDC says: “DIY air filtration units may be effective for temporary use until commercial ...

the Puget Sound Clean Air Agency has developed an effective DIY air purifier that you can build at home with a box fan and a standard furnace filter. Using a drill and metal brackets, attach the ...