CFM Airflow Calculator
Calculate room ventilation CFM requirements per ASHRAE 62.1 and 62.2 standards for residential and commercial spaces.
ASHRAE 62.2 is for homes. ASHRAE 62.1 is for commercial buildings, offices, and retail.
Kitchens, bathrooms, and garages have higher ventilation requirements due to moisture and contaminants.
Floor area of the room or zone being ventilated
Typical number of people in the space. More people = more CO2 and moisture to ventilate.
Used to calculate room volume for air changes per hour (ACH)
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