But a quick solution as posted by the university of michigan s medical center is to create your own filter using a box fan and a standard hepa filter both readily available in most hardware stores and costing about 25 for everything.
Box fan hepa filter diy.
10 furnace filter and tape it to the back of a box fan.
To make one start by buying a merv 13 or fpr 10 furnace filter and tape it to the back of a box fan.
Box fan merv 10 pollentec air filters pollen dust mold spores and pet dander biodegradable electrostatic design 6 pack compatible with lasko models b20200 2301 3733 box fans 20 5 frame 4 0 out of 5 stars 4.
And no box fan is engineered to withstand the extra workload of driving air through a dense filter so we can t claim this won t damage the fan s motor and we wouldn t consider it a long.
Make a hepa air filter out of a box fan and hepa furnace filter.
There will be a little arrow on the filter showing which way the air should flow.
These can be hard to find quickly with the conditions however.
One with the box fan and one with the hepa filter.
Click show more air filters.
Your total cost for a diy box fan filter can be as low as 40 50 00 including incidentals like duct tape or higher depending on the filter options.
Keeping your windows and doors closed and using an indoor high efficiency hepa filter can help keep indoor air as clean as possible.
20 by 20 by 1 merv 13 furnace filter.
Some have wondered whether we should tape it onto the back of the box fan filter.
Give this inexpensive diy air filter a try.
For some of us allergens are our worst enemy the fresh pollen of spring fall foliage and of course the ever present dust.
Point that in the right direction and then tape onto the front of the box fan filter.
Using our lighthouse 3016 iaq laser particle counter air samples were collected for 2 minutes with a 2 min delay.
20 inch box fan.
Insofar as filter changing costs you will find that it is still much cheaper to buy furnace filters and variants of them without sacrificing on quality or air cleaning capacity.
The diy box fan filter was able to drop pm2 5 particulates down 77 the hepa filter dropped the pm10 down 94 46.
This set up was done in 2 rooms.