Corsi hoped to reach as many people as possible who couldn't put down hundreds of dollars for a commercial HEPA air filter. The DIY solution, called the Corsi-Rosenthal (CR) Box, was codesigned ...

If your air quality is bad and you don’t have an air purifier, an HVAC filter taped to a box fan is better than nothing. A secondhand air conditioner is often a better value than a new budget ...

The Blueair Classic Pro CP7i air purifier not only filters the air but kills germs and sanitizes too. While it's big enough ...

Clean the air in your home and protect your HVAC system with one of these top-performing air filters from CR’s tests Thicker filters do their job better and require less frequent replacement ...

Just as the compressor is important, the filters play an equally significant role. The quality of cooling your AC delivers largely depends on these filters. If they are well-maintained ...