Airflow, Ventilation & CO2
Intake Fan
An intake fan is a ventilation device that pulls fresh air into a grow space. It helps supply plants with oxygen and supports stable environmental conditions.
What an Intake Fan Does in a Grow Room
An intake fan is a component of a grow room ventilation system designed to bring fresh air into the growing environment. In cannabis cultivation, intake fans work alongside exhaust fans to maintain proper airflow, temperature, humidity, and carbon dioxide availability.
Fresh Air Exchange and Plant Support
Fresh air drawn in by an intake fan replaces stale air that has been removed by the exhaust system. This exchange helps prevent heat buildup, balances humidity levels, and supplies plants with the oxygen and carbon dioxide needed for healthy growth and photosynthesis. Intake airflow also supports stronger stems by creating gentle air movement within the grow space.
Passive Versus Active Intake Systems
Intake fans may be passive or active. Passive intake relies on negative pressure created by an exhaust fan, allowing air to flow in through vents, while active intake uses a powered fan to push air directly into the grow room. The choice depends on grow room size, airflow demands, and environmental control goals.
Intake Fans and Environmental Balance
Proper intake fan setup helps create a stable and balanced grow room environment. When correctly matched with exhaust capacity, intake fans contribute to consistent plant growth, reduced stress, and efficient environmental management.
Related terms:
Ventilation, Exhaust Fan, Airflow, Grow Room Environment, Temperature Control, Humidity Control.
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