How is ventilation typically measured in buildings?

Ventilation in buildings is typically measured in terms of the number of air changes per hour. This metric indicates how many times the total volume of air within a space is replaced with fresh air in one hour, providing a clear assessment of how effectively air is being exchanged in the environment.

Understanding this measurement is crucial for maintaining good indoor air quality, as adequate ventilation helps to dilute and remove indoor pollutants, ensuring a healthier atmosphere for occupants. It allows building managers and engineers to gauge whether a space is adequately ventilated according to health standards and occupancy requirements.

While cubic meters of air per minute provides a flow rate and could also be used to assess ventilation, it doesn't directly convey the frequency of air replacement, which is essential in evaluating air quality and comfort levels in a space over time. Concentration of pollutants removed and square footage of the ventilation system, on the other hand, do not effectively indicate overall ventilation efficiency or air quality.