Box Fan Air Filter Front Or Back

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.

Box fan air filter front or back. To make one start by buying a merv 13 or fpr 10 furnace filter and tape it to the back of a box fan. 20 inch box fan. Seal the filters to the fan with duct tape to capture the most particles. Box fans were not designed for use with filters and the safety of filter fans has not been.

There will be a little arrow on the filter showing which way the air should flow. I ve watch a ton of videos and some people put the filter on the front with a tiny piece of tape. Fan 20 x 20 box fan any model and manufacturer filters depends on your needs and research findings. Air purifier filter front vs.

Make sure the filter is placed against the back of 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. Important tips while using fan. I ve got actual data on this question and the answer is the opposite of what most people tell me how it.

That would alter the fan so we can t compare apples to apples. 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. 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. Some have wondered whether we should tape it onto the back of the box fan filter.

Important tips while installing filter to the fan. Fortunately i tested lots of different fans. 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.

The suction from the fan should also make the filter stick to. 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. 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.

Building the box fan air purifier.