The Supco BC7070 Blower Control is a 24V timing control designed to manage blower on/off delays in HVAC systems. Operating with a 0–4-minute adjustable range, it regulates blower operation to optimize airflow and improve system efficiency. Commonly used in furnaces and air handlers, it helps reduce short cycling, enhance heat transfer, and maintain consistent comfort. https://www.partshnc.com/bc7070-supco-blower-control0-4min-24v