+An **air filter** is a device designed to remove solid [particulate matter](/wiki/particulate_matter) from the air. Crucial for both human health and mechanical integrity, it protects sensitive systems like [engines](/wiki/engine) by ensuring clean airflow.
+## See also
+- [Filtration](/wiki/filtration)
+- [HVAC](/wiki/hvac)
+- [Dust](/wiki/dust)
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