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 hepa filter smoke.
The suction from the fan should also make the filter stick to.
Some have wondered whether we should tape it onto the back of the box fan filter.
Build an affordable air purifier with a box fan and hepa filter california is still reeling from devastating wildfires that have tragically claimed many lives and thousands of homes.
However the concern is that it will cause the fan to wear out more quickly because it has to pull the air through the filter plug in and you are done.
After testing i was impressed by how well the diy box fan was able to remove particulates from the air.
The filters sell for about 15.
If you want to get rid of the smell of smoke in addition to.
Point that in the right direction and then tape onto the front of the box fan filter.
The diy box fan filter was able to drop pm2 5 particulates down 77 the hepa filter dropped the pm10 down 94 46 diy box fan filter with merv 13 filter see results complete results in the chart below.
Don t worry if you don t have any tape because the.
The very best air purifiers fitted with hepa filters can reduce particle concentrations by as much as 85 percent according to the epa.