When should the airflow in a system be balanced?

Balancing airflow in an HVAC system is essential for optimal performance and efficiency. When a system is first installed, it is crucial to ensure that the airflow is properly balanced. This is because an unbalanced system can lead to poor heating or cooling performance, increased energy consumption, and potential discomfort for occupants. Proper balancing at installation helps verify that all components are working correctly and that the air distribution is as intended.

Additionally, whenever there is a significant change in system usage, such as alterations in the layout of a building, changes in occupancy, or modifications to the HVAC system itself, it becomes necessary to rebalance the airflow. Such changes can impact the distribution of air, leading to imbalances that may affect comfort levels and system efficiency. Rebalancing ensures that each space receives the appropriate airflow to maintain optimal conditions.

Therefore, balancing the airflow after installation and when significant changes occur is crucial for maintaining system efficiency and ensuring occupant comfort. This makes the combined approach of both these instances the best practice.