What does a HEPA filter do?

What does a HEPA filter do?

A HEPA (High Efficiency Particulate Air) filter is a type of air filter that is highly effective at capturing and trapping microscopic particles such as dust, pollen, mold spores, pet dander, bacteria, and even viruses. HEPA filters are designed to remove at least 99.97% of particles that are 0.3 microns in size or larger.

HEPA filters work by forcing air through a fine mesh made of randomly arranged fibers. As air passes through the filter, particles are trapped by a combination of mechanisms, including interception, impaction, and diffusion. This process ensures that even the smallest and most harmful particles are captured and prevented from circulating back into the air.

HEPA filters are widely used in HVAC systems, air purifiers, vacuum cleaners, and other air filtration devices to improve indoor air quality and create a healthier environment. They are especially beneficial for individuals with allergies, asthma, or respiratory conditions, as they can help reduce exposure to airborne pollutants and irritants.

Overall, the primary function of a HEPA filter is to efficiently remove harmful particles from the air, leading to cleaner and fresher indoor spaces and promoting better respiratory health for occupants.