Dryer Vent Science

A clothes dryer works by forcing hot air through a turning drum. Wet clothes placed in the drum are then dried by the moving hot air. It is possible for a full load of wet clothes to contain as much as one and a half gallons of water. Lint is created from the clothes as the water is removed and the clothes dry. While much of the lint is trapped by the dryer filter, lint is also carried through the venting system, together with moist air. The accumulation of lint, both in the dryer housing and in the dryer vent, reduces the airflow and creates a highly flammable fuel source.
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Dryer Vent Safety Resources

www.csia.org

www.dryersafety.org