Refer to the ECM 2.3 motor curve in the attached graph showing cfm remains constant over a wide range of static pressures. The X13 ECM constant torque motor is a DC 3-phase ECM and generally operates ...

During heating and cooling demands, a high-efficiency ECM can save approximately 25 percent on annual motor operating costs compared to a PSC motor. During continuous fan demand, an ECM can save up to ...