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Ventilation Power Calculator

This calculator helps estimate the required air flow rate (Q) for a ventilation system based on the room area, ceiling height, and air exchange rate. It’s useful for HVAC engineers, architects, and building planners to design effective air circulation systems for residential, commercial, or industrial spaces.

Air Flow Rate Estimator for Ventilation

Input Fields
area
height
m
air
If enabled, the result will update automatically when you change any value.

Ventilation Power Calculation Formula

Formula
$$Q = A \cdot H \cdot N$$

Where:

  • $$Q$$ — Air flow rate (m³/h)
  • $$A$$ — Area of the room (m²)
  • $$H$$ — Height of the room (m)
  • $$N$$ — Number of air exchanges per hour


The ventilation power formula calculates the required air flow rate for ensuring sufficient air exchange in an enclosed space. It is commonly used when designing ventilation for residential, office, or industrial buildings. By inputting the room’s area, ceiling height, and desired number of air changes per hour, users can determine the appropriate capacity of ventilation equipment in cubic meters per hour (m³/h).

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