Box Fan Hepa Filter

Merv 13 box fan set up at 2 feet from particle counter.

Box fan hepa filter.

This maximizes indoor air quality and keeps the contaminants from building up in the equipment and damaging it. The box fan with the merv 13 can filter the air before it enters the space thereby reducing allergens and other pollutants found in outdoor air. Further testing needs to be done with higher merv ratings and over longer periods of time. The fan in the window also positively pressurizes the indoor space so that contaminants are pushed out preferably through another window.

There are many qualities of filters so it is important to make sure that the filter is both a hepa filter and that it has a merv minimum efficiency reporting value rating of 13 or higher. 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. Yes hepa will provide more filtration but if cost is an issue than the diy merv 13 box fan is a sensible choice. 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.