High-efficiency particulate air filter

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high-efficiency particulate air filter

[‚hī i¦fish·ən·sē pər‚tik·yə·lət ′er ‚fil·tər]
(mechanical engineering)
An air filter capable of reducing the concentration of solid particles (0.3 millimeter in diameter or larger) in the airstream by 99.97%. Also known as HEPA filter.

High-efficiency particulate air filter

An air filter that captures a high percentage of all particles, including very small particles not caught by other types of filters.
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But the decision to recommend use of a home electrostatic or high-efficiency particulate air filter is best governed by the specific indoor allergens an asthmatic child is vulnerable to, said Dr.
A 450-square-foot clean room with high-efficiency particulate air filters encapsulates the entire extrusion line to allow for film processing of these materials in the Class 10,000 environment.
Use high-efficiency particulate air filters in the heating, ventilation, and air conditioning (HVAC) system.
The GAO study, released Monday, found that 85 percent of commercial airliners recirculate cabin air through high-efficiency particulate air filters which remove more than 99 percent of viruses and other small particles when working properly.

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