HEPA filters are common in air purifiers and vacuums. Here's more on what they do, and whether they're worth prioritizing in the appliance you're shopping for.

HEPA stands for high-efficiency particulate air. A HEPA filter is a type of mechanical air filter; it works by forcing air through a fine mesh that traps harmful particles such as pollen ...

Zamora-Martinez especially recommends finding an air purifier that supports a HEPA (high-efficiency particulate air) filter. The EPA reports that this type of filter has the potential to remove at ...

To select the best air purifiers, we focused on those that use high-efficiency particulate air (HEPA) filters, the gold standard for removing particles like dust, smoke and pet dander from the air ...

They usually have a washable or disposable pre-filter that captures dust, hair and other larger particles, and a High Efficiency Particulate Air (HEPA) filter that traps more than 99.97% of ...

Many products use a combination of prefilters and HEPA filters to accomplish this task. Prefilters are typically a permanent fixture of the air purifier designed to catch large airborne objects ...