Box Fan Furnace Filter Air Purifier

In 2018 i tested a popular claim.

Box fan furnace filter air purifier.

If you want to filter out the most things you should be looking for a merv 11 filtration rating 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. I decided to go with the hospital grade merv 13 furnace filter. Once you have your materials place the filter in front of the fan with the airflow direction.

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. A good quality 3m merv 12 filter with an electrostatic grid costs about 15 00 and an activated carbon pre filter costs between 10 00 and 20 00 depending on the brand and design. All you need to do is buy what s called a merv 13 or fpr 10 furnace filter and tape it to the back of a box fan. 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.

Conventional air filters will cost a minimum of 60 00 off the shelf for a relatively small unit. The most important thing is to make sure that you buy the right filter. To get started all you need are a 20 inch box fan and a 20x20x1 furnace filter merv 13 or higher. On the other hand a brand new box fan costs about 20 00.

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. The fan in the window also positively pressurizes the indoor space so that contaminants are pushed out preferably through another window. The filters sell for about 15. I taped a 20 by 20 inch honeywell fpr 9 filter to a lasko 20 inch.

Pollentec box fan air filter effective filtering screen for pollen dust mold spores and pet dander reusable washable design compatible with lasko models b20200 2301 3733 made in usa 3 5 out of 5 stars 257.