Calculateur de Débit d'Air Gratuit
Calculez le débit d'air nécessaire pour votre système de ventilation. Déterminez le volume d'air en CFM ou m³/h pour chaque pièce.
Débit d'air requis
240 CFM
Required Airflow vs Room Length
Formule
Air Flow Rate (CFM)
CFM = Room Volume x ACH / 60
ACH (Air Changes per Hour) is how many times the entire room volume is replaced with fresh or conditioned air in one hour. Divide by 60 to convert from cubic feet per hour to cubic feet per minute.
Exemple Résolu
20 x 15 ft room with 8-ft ceilings at 6 ACH.
- 01Volume = 20 x 15 x 8 = 2,400 cu ft
- 02CFM = 2,400 x 6 / 60 = 240 CFM
Questions Fréquentes
What ACH values are typical?
Homes: 4-6 ACH for general ventilation. Kitchens: 15-20 ACH. Bathrooms: 8-10 ACH. Workshops: 10-15 ACH. These are guidelines; check local codes.
Is CFM the same for heating and cooling?
Cooling typically requires about 400 CFM per ton of cooling. Heating airflow depends on the furnace type and temperature rise, usually 350-400 CFM per 12,000 BTU/hr.
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