An air filter is a device which removes contaminants, often solid particulates such as dust, pollen, mold, and bacteria from air.
They are often used in internal combustion engines, gas compressors, diving air compressors, ventilation systems and any other application where air quality is important.
Engine intakes tend to use either paper, foam, or cotton filters. Older cars used to have an oil bath filter where the intake air was sucked through a reservoir filled with motor oil, on the bottom of the filter housing.
More on [ Air filter ]
Air Distribution :: Mechanical
Heating, Ventilating, and Air Conditioning :: Mechanical
Products and Services :: Air Quality
Products and Services :: Environmental Health
Air Cleaners :: Climate Control

Airpak - Offers software for modeling air flow, thermal transfer, and contaminant distribution in ventilation systems and other indoor environments. Includes online demonstration, contact information, and sample output.
Meta Description: [ Design integration made easy: Airpak flow modeling software for HVAC system design by Fluent Inc ]
AirQual - Portal for commercial indoor environments industry to research products and services, as well as legislative issues.
Clean Air Delivery Rate - Explains this rating system for air cleaners and shows application examples. Also provides a tutorial about air cleaners.
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ETV Indoor Air Products assessment - U.S. EPA and the Research Triangle Institute pilot project to verify performance of indoor air quality products in three broad categories.
Healthy Home and Workplace Pty. Ltd. - Information about health issues relating to indoor living and working environments as well as safe housing and associated technologies.
Meta Description: [ The Healthy House works to provide healthier
indoor living and working environments for all Australians. ]
IEQ Strategies - Offers a monthly newsletter on developments in the field of indoor air quality.
Meta Description: [ Helping organizations leverage technology for competitive advantage and business success through content, training, and consulting ]
Indoor Environment Connections - Offers information about a trade magazine for commercial, industrial, and institutional building owners providing data about indoor environmental issues.
Meta Description: [ Indoor Environment Connections is a trade publication for commercial,
industrial, and institutional building owners, homeowners, and consumers and
the industries that support them to provide technical and marketing
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