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 ...
Homemade air purifiers can filter air faster, making them an affordable alternative to more expensive commercial products.
Low-cost, DIY air purifiers are proving to be just as effective as expensive commercial units at protecting indoor spaces ...
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