Converting a box fan to a cheap, effective air purifier is easier than you might think. Here's what you will need, how to do it, and what mistakes to avoid.

Air purifiers are highly recommended during smoke season, experts say. One inexpensive way to DIY an air purifier involves just a box fan, a furnace filter, and a bungee cord.

A large area of greater Los Angeles had unhealthy air Friday, due to particulate matter from large wildfires. Here are tips for breathing cleaner air indoors if it's smoky outside.

A large area of greater Los Angeles had unhealthy air Friday, due to particulate matter from large wildfires. Here are tips for breathing cleaner air indoors if it's smoky outside.

The Corsi-Rosenthal box is an inexpensive air filter you can easily make yourself using a box fan. Learn how they work and get instructions for how to make one.

As much of the northern and eastern US finds itself enveloped in haze stemming from Canadian wildfires, Engadget has a timely how-to for building your own box air fan.

Corsi-Rosenthal Cubes are DIY air purifiers that feature four Merv-12 air filters fastened with duct tape to the sides of a standard box fan.

BROOKLYN, N.Y. (PIX11) — Health and environmental authorities are warning people throughout the tri-state region that we now face an air quality health alert due to pollution from smoke from … ...

This DIY box fan filter is a fairly cost-effective way to clean the air in your home. We purchased a box fan from a hardware store for about $20 and each one of the four air filters separately was ...

Interest in air filters and purifiers is spiking in Southern California, including questions about how to build a homemade air purifier. Getting clean air is the latest challenge for residents who ...

HEPA (for high-efficiency particulate air) filters are used in many air purifier machines. HEPA is roughly equivalent to a MERV 17 filter, the California Air Resources Board says.

Build an air cleaner at home All you need is a box fan, good air filters and some duct tape, and you’re in business. NPR has previously posted a design and guide to building an air purifying cube ...