Box Fan Air Filter Front Or Back

To get started all you need are a 20 inch box fan and a 20x20x1 furnace filter merv 13 or higher once you have your materials place the filter in front of the fan with the airflow.

Box fan air filter front or back.

Start off by unpacking the fan and making sure that it works. But if you have an air quality emergency on your hands regional wildfires or your charred dinner under the broiler and you have a box fan tape the right sort of filter and no time to get. Seal the filters to the fan with duct tape to capture the most particles. I ve watch a ton of videos and some people put the filter on the front with a tiny piece of tape.

The suction from the fan should also make the filter stick to. Make sure the arrows on the filter point towards the front of the fan or follow the same air flow of the fan. Important tips while using fan. Make sure the filter is placed against the back of the fan.

Fan 20 x 20 box fan any model and manufacturer filters depends on your needs and research findings. Box fans were not designed for use with filters and the safety of filter fans has not been. Wow you are in luck because this nerd right here has been building and testing diy air purifiers to survive beijing for the last six years. There will be a little arrow on the filter showing which way the air should flow.

Fortunately i tested lots of different fans. Some have wondered whether we should tape it onto the back of the box fan filter. The filters sell for about 15. 20 inch box fan.

Building the box fan air purifier. Important tips while installing filter to the fan. 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. I ve got actual data on this question and the answer is the opposite of what most people tell me how it.

Point that in the right direction and then tape onto the front of the box fan filter. Take the fan put on the feet for stability tape one fancy high rated furnace filter to a lower rated filter then tape those to the back of the fan. Air purifier filter front vs. It s hard to test with that first fan i used above because putting the filter on the back would require me to tape around the back screen.

20 by 20 by 1 merv 13 furnace filter.