20x20 Fan With Air Filter.
Intro: 20x20 Fan With Air Filter.
History: First off, a little history of how this project got started. I use 20X20 box fans. I have one in the window and every couple months, I have to pull it down and clean the fan and the screen that is on the window. This would be a good project for me to work on.
To use the box fan and a 20x20 filter, I wanted to make it easy to change and with little or no cost.
Please Note: (You will need the Firefox browser to view the site correctly. IE will not let you open the pictures right or make comments on what you see. Thanks for viewing the site.)
To use the box fan and a 20x20 filter, I wanted to make it easy to change and with little or no cost.
Please Note: (You will need the Firefox browser to view the site correctly. IE will not let you open the pictures right or make comments on what you see. Thanks for viewing the site.)
STEP 1: Checking Out the Bottom Bracket.
Step #1.This step you will see the pictures on the metal that I used to make the brackets that I needed to hold the filter and the fan. I going to start with the bottom bracket. It is made of channel that is 1/4x1/4x3/4 medal. The brackets are 2 1/2 inches long. On this part, I drilled two holes. One the same size of the screw that I took out and the other one big enough to get my screw driver in to put the screw in. There is one bracket on each side. These brackets hold the bottom of the filter.
Here I show the picture DSCF0122.
Here I show the picture DSCF0122.
STEP 2: Checking Out Top Bracket.
Step #2 This is the top bracket. As you can see by the picture the bracket is upside down. The flat side is down. Also I had to drill a few more holes in this one. These holes are all the same size. Big enough for the screws to go through. As you can see by the picture, this is a much longer screw. It goes through all three holes plus the fan. I used self starting screws so I put this one in with my screw gun. It needs to be loose enough so that the outside medal part will spin. That part is also 2 1/2 inches long. It is 3/4 wide.
Here I show the picture DSCF121
Here I show the picture DSCF121
STEP 3: Bottom Bracket With Filter In.
Step #3 On this step I will show the bottom bracket with the old filter in it. When you put the filter in, put the bottom of the filter in first.
Here I show the picture DSCF0120
Here I show the picture DSCF0120
STEP 4: Top Bracket With the Filter In.
Step #4. Again here we are on the top bracket. You will see the medal part (3/4 x2 1/2) that is locked down to hold that top of the filter in. The bottom of the filter sets in the channel.
Here I show the picture DSCF0119
Here I show the picture DSCF0119
STEP 5: Air Filter Before Removal.
Step #5 Here you will see a picture of the filter before I changed it. This is after being in the window for a little over a week. The filter is on that I bought at Lowes for 69 cent each. I bought 24 for less the 20 bucks. There are 30 day filters. I think for that price that maybe I can afford to change them earlier. Maybe every 2 weeks.
Here I show picture DSCF0118
Here I show picture DSCF0118
STEP 6: Here Is Fan With New Filter Installed.
Step #6 Here you will see a picture of the new filter that I put on my fan. Changing the filters takes only a couple minutes. I take a bench brush and hit the out side on the fan with it running before I put the filter in. This removes any dust that is on the outside of the fan. Another thing, some of the new fans have the plug right on the motor so with these you have to punch a hole in the filter to plug it in.
Here I show picture DSCF0123
Here I show picture DSCF0123
STEP 7: Front of the Fan All Ready to Go.
Step #7 and the last step. Here you will see a picture of the fan from the front with the filter installed. Ready to collect more dust.
Here I show picture DSCF0124
Here I show picture DSCF0124
17 Comments
ron_luce 8 years ago
I used this kind of filter for years. I couldn't afford a fancy air filter and then realized that a furnace filter is 20x20" just like a box fan.
I just duct-taped the filter to the box fan which makes a perfect seal. If you use white duct-tape, it's not even that ugly.
I would spend more money on the "HEPA" filters but, as an allergy sufferer, I figured that's what I needed.
I can't image that the cheaper filters get out the really small dust.
awilson69 9 years ago
Wow its an cool solution for indoor air pollution. One of my friend also made an awesome product like this name Fan Buddie. Its an air purifier. Its a very unique product. I am using it. I bought it from https://www.fanbuddie.com/
AthleticTrainer 9 years ago
I'm going to try this with bolts in the frame and fender washers to hold the filter on! Thank you for the post!
brandon05w 9 years ago
pgnelson108 11 years ago
cateddy 11 years ago
mccool 12 years ago
cateddy 12 years ago
Xyzo 12 years ago
These 20" box fan are just awesome!
cateddy 12 years ago
Xyzo 12 years ago
Better filter: 3M filtrete 1500, worked great w/o extra noise. (3M filtrete1000 cheaper alter.)
Longer filter life: add extra fiberglass pre-filter(s) before 3Ms.
Better Fan: Fan w/ remote, or add a remote on/off switch to your existing one
Put these around home, and saved.
No more expensive HEPA filters/air purifier needed. :D
cateddy 12 years ago
dittyjunk 14 years ago
cateddy 14 years ago
This is the first one that I made and I think that it would be more to your liking. It has 2 filters, one on each side. I don't have pictures of it. I gave it away when I moved away in around 2005. I used it at work for different things. For paint and also for the dust. This filter would do what you were talking about. Cover the whole filter. I had a big fan motor on it with lots of horses power. Sorry about not answer you comment earlier. I don't check this email too often. Thanks for the comment. Chuck
buenafe 14 years ago
cateddy 14 years ago
cateddy 15 years ago