What does HEPA stand for?

What does HEPA stand for?

• A. High Energy Particulate Air
• B. Heavy Emission Particulate Air
• C. Highly Efficient Particulate Air
• D. High Efficiency Particulate Air

Answer: (D)

HEPA describes a high-efficiency air filter designed to remove very small particles from the air. The correct expansion is High Efficiency Particulate Air. The “E” stands for Efficiency (not Energy or Emission), and the “A” stands for Air. HEPA filters are tested to capture at least 99.97% of particles as small as about 0.3 microns, making them extremely effective for trapping dust, mold spores, and other fine particulates. In practice, this means equipment or systems labeled HEPA provide superior filtration compared with ordinary filters, which is why this term is common in pest control and clean environments. The other options use the wrong wording for the E or describe aspects not captured by the standard acronym.

HEPA describes a high-efficiency air filter designed to remove very small particles from the air. The correct expansion is High Efficiency Particulate Air. The “E” stands for Efficiency (not Energy or Emission), and the “A” stands for Air. HEPA filters are tested to capture at least 99.97% of particles as small as about 0.3 microns, making them extremely effective for trapping dust, mold spores, and other fine particulates. In practice, this means equipment or systems labeled HEPA provide superior filtration compared with ordinary filters, which is why this term is common in pest control and clean environments. The other options use the wrong wording for the E or describe aspects not captured by the standard acronym.