Box Fan Hepa Filter Effectiveness

Further testing needs to be done with higher merv ratings and over longer periods of time.

Box fan hepa filter effectiveness.

Building the box fan air purifier. 20 inch box fan. Merv 13 box fan set up at 2 feet from particle counter. But here s a gut check.

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. The agency says the filter can give you a 90 percent improvement in fine particles. Hepa air purifier aeramax 300 set at 2 feet from particle counter.

Some have wondered whether we should tape it onto the back of the box fan filter. 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. 0 01 micron 10 nanometers and above. 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.

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. 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 wirecutter reports that this solution is effective although not to the degree of a dedicated machine.

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

Yes hepa will provide more filtration but if cost is an issue than the diy merv 13 box fan is a sensible choice. Point that in the right direction and then tape onto the front of the box fan filter. But it s not as strong as any of the actual air purifiers we tested. It falls squarely within the particle size range that hepa filters capture with extraordinary efficiency.

Fan 20 x 20 box fan any model and manufacturer filters depends on your needs and research findings. The filter dramatically decreased the amount of black carbon in the room within 30 minutes. Start off by unpacking the fan and making sure that it works.