All you need to do is buy what s called a merv 13 or fpr 10 furnace filter and tape it to the back of a box fan.
Box fan hepa filter smoke.
To make one start by buying a merv 13 or fpr 10 furnace filter and tape it to the back of a box fan.
Don t worry if you don t have any tape because the.
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.
The filters sell for about 15.
The suction from the fan should also make the filter stick to.
The very best air purifiers fitted with hepa filters can reduce particle concentrations by as much as 85 percent according to the epa.
As the fires continue to burn the smoke has collected throughout the san joaquin basin slowly feeding its way out over the san francisco bay area.
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.
Some have wondered whether we should tape it onto the back of the box fan filter.
Point that in the right direction and then tape onto the front of the box fan filter.
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.