What is A VAV Box ?
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variable air volume - VAV
V AV (variable air volume) A variable air volume ( V AV ) system is a type of heating , ventilation , and air - condition ing ( H V AC ) system . It is a control system that adjusts the amount of air flow in a space to maintain a comfortable environment . The system uses sensors to monitor the space 's temperature and humidity . The sensors send signals to the controller , which adjusts the amount of air flow accordingly . Cool Air Conditioners The V AV system is a more efficient way to regulate the air flow in a space than the traditional H V AC system . The V AV system is more energy - efficient because it only circ ulates the amount of air that is needed to maintain the space at the desired temperature . The traditional H V AC system circ ulates a constant volume of air , regardless of the space 's actual needs . The V AV system is also mor...