Comment by 99_00
3 years ago
Is that what you use? What is your personal experience with it?
I think this is good if you are in a wild fire scenario and air purifiers are sold out, or for your home work shop.
Otherwise I suspect it is very energy inefficient and noisy.
I haven't used that specific construction, but I have used this one[0] when I moved to a location without realizing the extent of the wildfire smoke. It worked well, but yes it is noisy on the highest setting. I continue to use it because it's inexpensive and the parts are readily available.
0. https://deohs.washington.edu/edge/blog/how-make-box-fan-filt...