The efficiency of an airmover is the total output power
divided by the total input power. It is a function of both motor efficiency and aerodynamic efficiency.
A motor’s efficiency is a function of the type of motor being used, it’s specific mechanical and electrical characteristics, and how well it is suited for the application. Typical motor efficiencies range from
40% to 70%.
Aerodynamic efficiency is a measure of the performance of the Airmover itself. A more efficient airmoving device will require less power from the motor. The aerodynamic efficiency is a function of the size, speed, airflow, pressure and type of airmoving device.
Typical air efficiencies range from 15% to 50%.
