The choice of air volume of fresh air system is not the bigger the better, the choice of air volume should be considered according to several factors, the following are some key points:

1. Housing area and ventilation requirements

The choice of air volume should be determined according to the actual area of the house, the number of users and the number of rooms that need ventilation. In general, the calculation of air volume is based on the number of air exchanges in the room (the number of air changes per hour). If the air volume is too large, it may lead to excessive ventilation, which not only wastes energy, but also may affect the balance of indoor temperature and humidity.

2. Comfort and noise

The greater the volume of air in the fresh air system, the noise during operation may also increase. Excessive air volume may lead to higher noise levels, which may affect the comfort of living. Therefore, the air volume should be selected according to the comfort requirements of the house, usually choosing a moderate air volume can ensure good air circulation while avoiding excessive noise.

3. Energy efficiency and conservation
Excessive air volume means that the system consumes more electricity, and therefore increases long-term usage costs. Choosing a system with the right air volume can provide adequate ventilation while maintaining energy efficiency and saving energy. Excessive air volume not only wastes energy, but also increases the wear and tear of equipment.

4. Air quality requirements
If you live in an area with poor air quality, you may need a larger volume of air to ensure that you get enough fresh air indoors and expel pollutants. But in general, moderate air volume is enough to maintain air circulation and comfort.

5. Room layout and tightness

The tightness and layout of the room will also affect the amount of air required. If the room is relatively sealed or the room is large, a larger air volume may be required to ensure effective ventilation. Open or more transparent rooms require less air volume.

      
In SUMMARY:                    
fresh air system the choice of air volume should be considered according to the size of the house, the use of demand, noise requirements and energy budget. Excessive air volume not only wastes energy, but may also affect comfort and the long life of the system. It is usually recommended to choose the appropriate air volume according to the actual needs to ensure good air quality and energy saving effect.