Clean shop air #1: Box fan air cleaner

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Blog entry by scrollingdesigns posted 04-25-2012 02:40 PM 13587 reads 2 times favorited 5 comments Add to Favorites Watch
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In looking around the web, I came across some articles about using a 20” box fan and a standard 20” by 20” furnace air filter as a air cleaner for your shop. My work area is only a 10’ by 12’ so I thought that would do the trick for me, and for less than buying one. Between the box fan and the air conditioner, I live in Glendale AZ so Ineed air in the summer, with a special filter in it, I expect they should hold down dust pretty good. I expect that by the time I am finished I should have less than $30 invested.
Has anyone out there done this, if so, does it work?

-- John, (Scrollingdesigns), Arizona,

5 comments so far

View greatview's profile


131 posts in 3210 days

#1 posted 04-25-2012 04:14 PM

I’ve done just this. I use two filters, the outer to collect the large “dust” and a finer one to really clean the air.

-- Tom, New London, NH

View scrollingdesigns's profile


5 posts in 2290 days

#2 posted 04-25-2012 05:11 PM

I like that idea of the two filters. Think I will revamp my thoughts.

-- John, (Scrollingdesigns), Arizona,

View dbhost's profile


5736 posts in 3285 days

#3 posted 04-25-2012 08:11 PM

I did it at first, worked okay for me, but didn’t move enough air in my 18×20 shop for my tastes… In your 10×12 you should be more than fine…

Box fan $5.00 at Goodwill or a Garage sale. (I see them all the time around here)
Filtrete 20×20 MERV 11 or better filter $16.00
Roll of duct tape $5.00

Total spent $27.00 before taxes…

Pretty hard to beat those kinds of numbers.

-- Please like and subscribe to my YouTube Channel

View canadianchips's profile


2602 posts in 3050 days

#4 posted 04-25-2012 08:33 PM

I have one as well. I use a course outer filter, but I recommend buying the paper one for inside. Removes more dust. My shop is 14×20 and I like it.
I also use mine to cool in summer, I have made a tube vent along ridge inside with vents blowing down.

-- "My mission in life - make everyone smile !"

View scrollingdesigns's profile


5 posts in 2290 days

#5 posted 04-26-2012 04:50 AM

Thanks for all the replys, good information.

-- John, (Scrollingdesigns), Arizona,

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