Changed the filter on my home-made box fan filter yesterday; yikes! Instructions inside on how to make your own for about $30 to improve your indoor air quality. : r/SeattleWA
I vacuum my air purifier filters to squeeze a few more months out of each filter : r/Frugal
8 hours of running the DIY air purifier I made. MERV 13 air filter. : r/bayarea
Box fan air purifier filter after 1 week of use during Campfire : r/sanfrancisco
My home made air filter fan. Looks like it's working... : r/Calgary
New improved Mi Air Purifier 3. New AirFlow fan designed, 26% increased CADR, Xiao Ai Compatibility. : r/Aqara
A follow up to the DIY air purifier thread- here's my toddler's room's box fan filter after 6 weeks of nighttime use. Glad to know it's reducing his environmental allergy symptoms this
If you want an air purifier but only have $39, slap a 20x20x1 filter on the back of a box fan : r/lifehacks
We have an air purifier in our house because we live in between a freeway and railroad tracks. We put a new filter in today. We've been here 7 months. : r/WTF
DIY air purifier : r/lifehacks
Homemade air purifier. 2 filters and a box fan : r/mildlyinteresting
A very effective Air Purifier sold in Southern California Costco. I've tried multiple units and this one, by far, blows more air and covers the largest sqft area for it's size. Also
Reddit Best Target Dyson Air Purifier for Laboratory Clean Room - China Air Purifier Argos, Germguardian AC4825 | Made-in-China.com
Made an air purifier from a box fan, an air filter, and some duct tape. : r/redneckengineering
The air filter I just took out of my lawnmower vs the one I replaced it with : r/mildlyinteresting
DIY Air Purifier w/ 2x120mm Case Fans : r/DIY_tech
Cheap air purifier : r/Frugal
Bushfire smoke - DIY air purification : r/melbourne
Best Air Purifier Posts - Reddit
$20 air purifier : r/lifehacks
This is what Air Purifier filter looks like after 145 days - Old (left) Vs New filter(right) : r/india
Hepa Filter Companion Cube Box Fan : r/DIY
Is an $800 purifier best to clean your home's air? Marketplace tested 5 top brands and their claims | CBC News
Thanks to this Reddit, I no longer have to wonder why car vent air freshener wasn't working! Cabin air filter after 225k miles! : r/Cartalk
Best Air Purifier Posts - Reddit
