DIY Air Cleaner
There is a very affordable DIY air purifier that anyone can make for under $25, while the cold weather is upon us and many of us are spending more time in the house with the windows closed up. Even in the better weather, having a space to breath without all the dust and pollen is so nice.
Here is how to inexpensively keep the air in a room at least 90% cleaner than it is right now.
You’ll want to start with a standard 20” x 20” box fan. Walmart currently has the Lasko 20” box fan for $17.88. You don’t need this brand necessarily, just use any standard 20” box fan. Chances are you already have one lying around somewhere…
Next you’ll need a 20” x 20” x 1” MERV 13 HEPA furnace replacement filter. A MERV 13-rated filter is effective for reducing pollen, dust mites, sanding dust, textile and carpet fibers, mold spores, dusting aids, cement and lead dust, Legionella, humidifier dust, milled flour, auto emissions, all bacteria, most tobacco smoke, droplet nuclei (from sneezing,) and more…
The least expensive brand I have found with the MERV 13 rating is listed in a package of 6 filters (see photo above) on Amazon for $17.53 with free shipping on orders over $25. (I know I can always find something to buy to make up the difference. Keep me away from the books…)
Anyway, that is just $2.92 each! It is recommended that the filter be changed on your DIY Air Filter every 3 months. A package of six will last one fan a full year-and-a-half unless you need to change them out sooner.
Duct tape or zip ties (whichever you prefer) to attach the filter to the back of the fan.
HINT: Write the ‘3-month change-out’ date on the new filter when attaching to the box fan.
NOTE: There are no affiliate links in this blog. I have provided the best information and pricing I could find at the time of this writing. If you find a better value, please share it with us in the comments below. Thank you.
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For an explanation and demonstration watch THIS or THIS.
MERV Ratings Article & MERV Rating Chart
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