How To Build A Cheap Air Purifier

A high-quality HEPA air purifier can eliminate nearly all the smoke, dust or allergen particles from the air in a room — but a $40 contraption can eliminate about 90 per cent. It’s worth a try if you need to clean your indoor air on the cheap.

To build the purifier, you just need:

  • A 51cm box fan (about $20) new, or perhaps you have one lying around)

  • A 20-by-20 inch furnace filter that’s rated MERV-13, FPR 10, or MPR 1500-1900 (also about $20)

  • Tape to attach the two

In this video, Jeffrey Terrell, director of the University of Michigan Health System’s Michigan Sinus Center, demonstrates how the DIY purifier compares to an $1,000 factory model. It’s not quite as good, but a lot better than nothing.

Once you build a system like this, you can put it in a bedroom or wherever you need your air to be cleanest. This type of filter will capture particles as small as 1/3 of a micron in size, which is good enough for many allergens and a lot of the particles from wildfire smoke. No filter can protect against carbon monoxide or irritating gases, though, so make sure you’re protecting yourself in every way possible.


Comments

Be the first to comment on this story!

Trending Stories Right Now