Box Fan Hepa Filter Effectiveness

0 01 micron 10 nanometers and above.

Box fan hepa filter effectiveness.

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 inch box fan. Make a hepa air filter out of a box fan and hepa furnace filter. Start off by unpacking the fan and making sure that it works.

Many media outlets have incorrectly stated that hepa. Yes putting the filter behind the fan will prevent dust from hitting the motor and collecting on it. For some of us allergens are our worst enemy the fresh pollen of spring fall foliage and of course the ever present dust. 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.

The agency says the filter can give you a 90 percent improvement in fine particles. This graph from puget. The filter dramatically decreased the amount of black carbon in the room within 30 minutes. There will be a little arrow on the filter showing which way the air should flow.

People run unprotected fans we just call them fans all the time and it doesn t seem to cause much harm. 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. I think there s a small non zero benefit of that although i haven t seen anyone actually test it. But it s not as strong as any of the actual air purifiers we tested.

Building the box fan air purifier. 20 by 20 by 1 merv 13 furnace filter. But here s a gut check. Yes hepa will provide more filtration but if cost is an issue than the diy merv 13 box fan is a sensible choice.

The wirecutter reports that this solution is effective although not to the degree of a dedicated machine. Merv 13 box fan set up at 2 feet from particle counter. Further testing needs to be done with higher merv ratings and over longer periods of time. 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.

It falls squarely within the particle size range that hepa filters capture with extraordinary efficiency. Point that in the right direction and then tape onto the front of the box fan filter. Hepa air purifier aeramax 300 set at 2 feet from particle counter.