Clean Air vs COVID
COVID-19 is largely spread by respiratory particles in the air. Large droplets drop to the ground quickly but smaller particles (“aerosols”, roughly 0.3 to 3 micrometers) can stay in the air for hours. Fortunately there is a low cost method to remove these droplets using a simple box fan and filter. The goal is to get as much air through the filter as possible to increase your clean Air Changes per Hour (ACH). Click below to order a kit or donate one, or keep scrolling for all the info. Note – please do not substitute less expensive / effective filters as they do not work nearly as well for small particles that can carry COVID.
Some Links Contain Affiliate Information with Funds Going to Support Development of Educational Content
We want to ensure equal access for all teachers, students, and administrators. You can make a tax-deductible donation through Community Venture Foundation that allows us to order supplies at wholesale, optimize distribution, and maximize the impact of your support. We encourage teachers to fill out our Google Form to help us identify needs and distribute kits as effectively as possible.
Donations through Community Venture Foundation / Startup Junkie Foundation are Tax Deductible
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In the most basic form you can attach a single filter to a box fan. However, Richard Corsi and Jim Rosenthal showed that building a cube greatly increases airflow (increases effectiveness) and reduces noise (increases usefulness). Read about the lab testing and results below. The construction is fairly simple, you can use the box from the fan to create the base, and then secure four MERV-13 filters to the sides, position the fan on top, and create a shroud to cover the corners of the fan to improve performance. You can find detailed instructions and a video guide will be coming soon. Note that you can encourage creativity by using any shapes or configurations, but the cube is what has worked best in our testing. The key is getting as much air through the filters as possible, without letting unfiltered air leak into the fan.
Be sure to orient the filters with the flow direction pointing in and place the fan so it blows upward, as indicated by the arrows on the right image above.
The fan/filter kits serve as an excellent educational resource in addition to reducing the spread of COVID. Having students explore different configurations with multiple filters, filter thicknesses, and overall geometries creates a way to integrate the kit into Mathematics, Science, Art, and English Language Arts. Working with teachers, we are developing a variety of lesson plans for elementary, middle, and high school, so please check back soon. We love giving students the chance to engage with their lessons as that is how we best learn ourselves. Check them out and feel encouraged to submit your own!
Expand Options with 3D Printing
There are tons of educational opportunities with these kits and you can incorporate 3D printing if available. We made custom clips that you can print and use with your own setup. They work well to help reduce leakage but tape works as good (or better) in many cases so don’t feel like you NEED a 3D printer. How would you change them to improve performance?
Buy Kits Direct
If you want to get started right away, then you can simply buy all the pieces you need right now. You can buy all the parts from your favorite retailer and simply use tape or another method to attach the fans and filters.
If you want to help even more, you are able to make a tax-deductible donation through the Community Venture Foundation / Startup Junkie Foundation. We will use your donation to provide kits to teachers and administrators in Arkansas. We will use our list of pre-identified teachers coupled with feedback from state and local leaders to deploy them to those most in need. One kit can clean the air in most classrooms or bathrooms, and additional kits can be used to help in band rooms, gyms, or the cafeteria.
Want to Get Involved?
We need your help and there are many ways to get involved. We need help to deploy kits and raising awareness. In partnership with Startup Junkie Foundation we are able to received tax-deductible donations that enable us to do bulk purchases and distribution. This website will be continually updated with new educational content and we welcome expertise in web development and social media management. Ultimately a simple share with your network is greatly appreciated as we work towards equal access for all teachers.
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USE AT YOUR OWN RISK: This website is for informational purposes only. It is your responsibility to independently determine whether to perform, use or adapt any of the information or content on this website. Any DIY of any sorts may result in injury. By undertaking any of the projects or builds displayed on this website, you assume the risk of any and all resulting injury.
Be safe out there!