Box Fan Hepa Filter Effectiveness

Building the box fan air purifier.

Box fan hepa filter effectiveness.

This article is based on the 3m merv 12 20 x 20 pleated filter and the web absorber cut to fit 20 x 25 filter. It falls squarely within the particle size range that hepa filters capture with extraordinary efficiency. Start off by unpacking the fan and making sure that it works. But here s a gut check.

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. Fan 20 x 20 box fan any model and manufacturer filters depends on your needs and research findings. Merv 13 box fan set up at 2 feet from particle counter.

Many media outlets have incorrectly stated that hepa. Hepa air purifier aeramax 300 set at 2 feet from particle counter. 0 01 micron 10 nanometers and above. Recently we ve heard reports of people making a diy air purifier by taping an hvac furnace filter to a box fan so we tried it and tested it.

20 inch box fan. There will be a little arrow on the filter showing which way the air should flow. This graph from puget. The wirecutter reports that this solution is effective although not to the degree of a dedicated machine.

1 inch pleated filters are 2 3 times more restrictive than fiberglass filters right out of the box and can easily become too restrictive within 30 days of use. 20 by 20 by 1 merv 13 furnace filter. As you can see in his video demonstration terrell tapes a 20 by 20 inch whole house air filter merv 13 or higher which sells for 15 over a 20 inch square box fan which you can find for. Yes putting the filter behind the fan will prevent dust from hitting the motor and collecting on it.

People run unprotected fans we just call them fans all the time and it doesn t seem to cause much harm. Yes hepa will provide more filtration but if cost is an issue than the diy merv 13 box fan is a sensible choice. Further testing needs to be done with higher merv ratings and over longer periods of time. I think there s a small non zero benefit of that although i haven t seen anyone actually test it.

The filter dramatically decreased the amount of black carbon in the room within 30 minutes. For some of us allergens are our worst enemy the fresh pollen of spring fall foliage and of course the ever present dust. Make a hepa air filter out of a box fan and hepa furnace filter.