The Importance of Airflow Balancing in HVAC Systems
Poor airflow leads to hot and cold spots, energy waste, and system strain. Learn how to test and balance airflows for better comfort and efficiency.
Even the best-designed system can perform poorly if airflows aren’t balanced.
Use a digital anemometer to measure CFM at each diffuser and adjust balancing dampers until supply matches design airflow.
In VAV systems, check actuator calibration and minimum air settings.
Balanced airflow improves comfort, reduces energy consumption, and helps compressors and fans run at optimal load.
Always check filter condition and coil cleanliness before airflow testing to ensure accurate readings.
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Airflow balancing really does affect comfort and efficiency. It also helps to check static pressure before adjusting dampers so you’re not creating new restrictions elsewhere. In VAV systems, confirming field airflow readings match the BAS can prevent control issues. And as you mentioned, clean filters and coils are essential before testing to get accurate CFM measurements.