Box Fan Furnace Filter Air Purifier

Conventional air filters will cost a minimum of 60 00 off the shelf for a relatively small unit.

Box fan furnace filter air purifier.

On the other hand a brand new box fan costs about 20 00. 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. The fan in the window also positively pressurizes the indoor space so that contaminants are pushed out preferably through another window. If you want to filter out the most things you should be looking for a merv 11 filtration rating or higher.

The filters sell for about 15. All you need to make this is the correct filter a box fan and tape. 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. Once you have your materials place the filter in front of the fan with the airflow direction.

The most important thing is to make sure that you buy the right filter. 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. 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. That sticking a furnace hvac filter on a standard box fan produces a useful diy air purifier.

I taped a 20 by 20 inch honeywell fpr 9 filter to a lasko 20 inch. 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. Don t worry if you don t have any tape because the. I decided to go with the hospital grade merv 13 furnace filter.

In 2018 i tested a popular claim.