通风机的性能参数主要有流量、压力、功率，效率和转速。另外，噪声和振动的大小也是通风机的主要技术指标。流量也称风量，以单位时间内流经通风机的气体体积表示；压力也称风压，是指气体在通风机内压力升高值，有静压、动压和全压之分；功率是指通风机的输入功率，即轴功率。通风机有效功率与轴功率之比称为效率。通风机全压效率可达90%。 通风机未来的发展将进一步提高通风机的气动效率、装置效率和使用效率，以降低电能消耗；用动叶可调的轴流通风机代替大型离心通风机；降低通风机噪声；提高排烟、排尘通风机叶轮和机壳的耐磨性；实现变转速调节和自动化调节。
The performance parameters of fan mainly include flow, pressure, power, efficiency and speed. In addition, the size of noise and vibration is also the main technical indicators of fans. Flow is also called air volume, which is expressed by the volume of gas flowing through the fan in unit time; pressure is also called wind pressure, which refers to the pressure rise value of gas in the fan, including static pressure, dynamic pressure and total pressure; power refers to the input power of the fan, namely shaft power. The ratio of effective power to shaft power of fan is called efficiency. The total pressure efficiency of fan can reach 90%. The future development of fans will further improve the aerodynamic efficiency, device efficiency and use efficiency of fans, so as to reduce power consumption; use axial flow fans with adjustable moving blades to replace large centrifugal fans; reduce fan noise; improve the wear resistance of exhaust fan, dust exhaust fan impellers and casings; realize variable speed regulation and automatic regulation.