Variable Air Volume

Variable Air Volume

Variable air volume (VAV) is a type of heating, ventilating, and/or air-conditioning (HVAC) system.  Unlike constant air volume (CAV) systems, which supply a constant airflow at a variable temperature, VAV systems vary the airflow at a constant temperature.  The advantages of VAV systems over constant-volume systems include more precise temperature control, reduced compressor wear, lower energy consumption by system fans, less fan noise, and additional passive dehumidification.

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