Ventilation Airflow Requirement Calculator
This calculator determines the required airflow (Q) in cubic meters per hour based on the recommended air exchange rate, room area, and ceiling height. It helps HVAC professionals and building designers ensure proper ventilation according to safety and comfort standards.
Required Ventilation Airflow Estimator
Airflow Requirement Calculation
$$Q = R \cdot A \cdot H$$
Where:
- $$Q$$ — Required airflow (m³/h)
- $$R$$ — Recommended air exchange rate (1/h)
- $$A$$ — Room area (m²)
- $$H$$ — Room height (m)
The ventilation airflow requirement formula helps calculate the volume of air that must be replaced per hour to maintain indoor air quality. The recommended air exchange rate (R) depends on room type—e.g., living rooms, offices, or bathrooms. This calculation is essential for sizing fans, ducts, and HVAC systems in compliance with ventilation standards.