HEPA - Wikipedia
Vacuum cleaners simply labeled "HEPA" may have a HEPA filter, but not all air necessarily passes through it. Finally, vacuum cleaner filters marketed as "HEPA-like" will typically use a filter of a …
What is a HEPA filter? | US EPA
Aug 15, 2025 · HEPA is a type of pleated mechanical air filter. It is an acronym for "high efficiency particulate air [filter]" (as officially defined by the U.S. Dept. of Energy).
How do HEPA air filters work? - Explain that Stuff
Aug 4, 2024 · If you suffer from asthma or another breathing difficulty, you may find a HEPA (sometimes defined as "high-efficiency particulate air," sometimes as "high-energy particulate arresting") air …
What is a HEPA filter, and what is it used for? - TechRadar
May 11, 2025 · HEPA stands for 'high efficiency particulate air' [filter], and it's a standard for filter effectiveness. To be called a HEPA filter, a filter must meet stringent standards in terms of what it...
What is a HEPA filter and its benefits? - Dyson
HEPA (High Efficiency Particulate Air) is an air filter efficiency standard – a certification of a filter’s performance. HEPA is defined as a filter that captures 99.97 per cent of particles down to 0.3 …
High-efficiency particulate air system (HEPA system) | Britannica
Dec 20, 2025 · High-efficiency particulate air system (HEPA system), particulate air-filtration system designed to capture at least 99.97 percent of fine airborne particles larger than at least 0.3 …
HEPA Filters: What They Mean for Indoor Air Quality
If you are looking for a room air cleaner or vacuum, you likely have come across the term ”HEPA.” HEPA stands for “high efficiency particulate air” and refers to a type of air filter designed to trap very …
Comprehensive Guide to HEPA Filters: Benefits, Types & Selection
May 15, 2025 · What is a HEPA Filter? H EPA filters (High-Efficiency Particulate Air Filters) are advanced air filtration systems designed to trap particles as small as 0.3 microns with an efficiency of …
Understanding HEPA Filters: What is a HEPA Filter and Why It Matters
Dec 5, 2025 · What is a HEPA Filter? HEPA stands for High Efficiency Particulate Air. A true HEPA filter captures at least 99.97% of airborne particles measuring 0.3 microns—widely known as the most …
Understanding HEPA Filtration: How It Works & Why It Matters
May 3, 2025 · HEPA filtration is a process that involves using a High-Efficiency Particulate Air (HEPA) filter to remove airborne particles from the air. These filters capture at least 99.97% of particles that …