For a filter to be certified high-efficiency particulate air (HEPA), it must be tested and proven to filter particles as small as 0.3 microns to 99.97 percent efficiency at its designed air flow. To ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Ria Misra Ria Misra, an editor at Wirecutter, has traveled on her own ...

Vacuum filters have an important job: They keep dust, dirt, and allergens from recirculating in our homes and affecting air quality. Without those filters, a vacuum spits back out the tiny particles ...

A cabin air filter is behind the dashboard and cleans the air coming into your car’s interior through the heating, ventilation and air-conditioning systems. It’s recommended to change your filter ...