The Rheem-Ruud 51-106543-22 SelecTech Gen 3 is a 1 HP variable speed condenser motor designed for efficient operation in residential and commercial HVAC systems. Operating at 120V, it regulates airflow by adjusting motor speed to match system demand, improving comfort and energy efficiency. https://www.partshnc.com/51-106543-22-rheem-ruud-1hp-selectech-gen-3-variable-speed-condenser-motor-120v