Box Fan Hepa Filter Effectiveness

For some of us allergens are our worst enemy the fresh pollen of spring fall foliage and of course the ever present dust.

Box fan hepa filter effectiveness.

Point that in the right direction and then tape onto the front of the box fan filter. I think there s a small non zero benefit of that although i haven t seen anyone actually test it. Fan 20 x 20 box fan any model and manufacturer filters depends on your needs and research findings. But it s not as strong as any of the actual air purifiers we tested.

Yes hepa will provide more filtration but if cost is an issue than the diy merv 13 box fan is a sensible choice. Start off by unpacking the fan and making sure that it works. 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 by 20 by 1 merv 13 furnace filter.

People run unprotected fans we just call them fans all the time and it doesn t seem to cause much harm. Further testing needs to be done with higher merv ratings and over longer periods of time. This graph from puget. It falls squarely within the particle size range that hepa filters capture with extraordinary efficiency.

Merv 13 box fan set up at 2 feet from particle counter. There will be a little arrow on the filter showing which way the air should flow. The filter dramatically decreased the amount of black carbon in the room within 30 minutes. Make a hepa air filter out of a box fan and hepa furnace filter.

Building the box fan air purifier. 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. If you want to use pleated filters and higher merv filters the only safe way to do so is have a 5 6 inch media filter installed by a professional. Many media outlets have incorrectly stated that hepa.

But here s a gut check. 20 inch box fan. Hepa air purifier aeramax 300 set at 2 feet from particle counter. The wirecutter reports that this solution is effective although not to the degree of a dedicated machine.

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. The agency says the filter can give you a 90 percent improvement in fine particles.