The Rheem-Ruud 47-102686-81 Fan Timer Control Kit is a precision control component designed for use in Rheem and Ruud HVAC systems. It regulates the timing of the blower fan, ensuring proper airflow during heating and cooling cycles for optimal system efficiency. This control kit enhances comfort by preventing short cycling and maintaining consistent temperature distribution. https://www.partshnc.com/fan-timer-control-kit