And my partner and I set out to build a Cocoon for ourselves. This is Ali (ph) and Alex's (ph) attempt to make a box fan filter. Gall sent me a PDF with instructions.

Box fans can offer relief, but too often they only cool down one room - especially if you set them on the floor, point them ...

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 thing to remember about box fans is that they're great for pushing hot air out of your home. Here's how to work that to your advantage.

Box fans in windows can keep your home cool at a lower cost than AC if you face them in the right directions. Here's what to know this summer.

Box fans in windows can keep your home cool at a lower cost than AC if you face them in the right directions. Here's what to know this summer.

Box fans in windows can keep your home cool at a lower cost than AC if you face them in the right directions. Here's what to know this summer.