Motor efficiency classes describe how much electrical energy a motor converts to useful work, with higher classes using less power.
What IE3 and IE4 Mean
IE3 is premium efficiency and IE4 is super premium efficiency, each step reducing the energy lost as heat in the motor.
Why It Matters for Compressors
Compressors run thousands of hours a year, so a more efficient motor delivers savings that quickly repay the price difference.
Total Cost of Ownership
Compare motor class together with the airend and control system, since overall system efficiency is what cuts the electricity bill.
Contact us to compare compressors by motor class and lifecycle energy cost.