Things You'll Need:
- Fan
- Air filter
- Small wooden planks
- Wood glue
- Plastic zip ties
- Drill
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Step 1
Buy a fan. There are a variety of fans on the market, and you can choose whatever one you like the most. When it comes to fitting an air filter, a box fan seems to be the best choice, but any fan will work.
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Step 2
Measure the air filter. You can buy air filters at any hardware store. When buying an air filter, try to find one that is a similar size to the box fan. The filters can be cut to size if necessary.
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Step 3
Build a filter housing. Cut four wooden planks to the size of your fan and use the wood glue to connect them at a 90 degree angle. You should glue a third plank along the bottom so that when the filter is dropped in, it does not fall out.
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Step 4
Fit the housing to the filter. Place a filter in the makeshift housing and make sure it fits before attaching the housing to the fan. Try to make the fit as snug as possible to keep the force of the air from moving the filter.
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Step 5
Attach filter and housing to fan. Drill a hole on the top and bottom of each side of the housing and thread a large zip tie through. With the other end of the tie, run it though the rear outer housing of the fan and connect the two sides. The housing should fit snugly against the fan and the filter should cover most of the fan.
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Step 6
Turn on the fan. Once you turn on the fan, the it will force air through the air filter and trap the dust, pollen and other items circulating through the air. Keep an eye on the filter and change it when it gets dirty.
