"PC fans are the future of portable air cleaners. For those who don't want to completely DIY it, you can buy the frame and instructions from Clean Air Kits."

Joey Fox

HVAC Engineer, Ontario Society of Professional Engineers

"I am thrilled to be part of something that is so accessible to people around the world, helping to protect children in school and families in their homes."

Richard Corsi, PhD, PE

Dean of Engineering, UC Davis

"They are very powerful, and they work. Even wildfire smoke — this filter is going to pull that out of the air too."

Kim Prather, PhD

Distinguished Professor, UC San Diego

"What the C-R box lacks in efficiency, it makes up for in airflow. All you care about is the total rate at which the air is cleaned."

Joseph Fox

IAQ Advisory Group Chair, Fortune Magazine