The Amana-Goodman 0131M01002S ECM Motor is an energy-efficient workhorse designed for airflow management in residential and light commercial HVAC systems. Operating on a dual voltage range of 120 or 240 volts AC. This motor boasts a significant 1/2 horsepower (HP) rating, making it suitable for larger-capacity HVAC systems. While slightly heavier at 14.5 lbs compared to some motors, its efficient design offers advantages. ECM stands for Electronically Commutated Motor, which means it uses advanced internal controls to optimize performance.