CNT7943 | Control Board 120v HSI 1stage | Trane

**Control Board for Trane HVAC Systems** The Trane CNT7943 Control Board is a crucial component for 120-volt High Stage Ignition (HSI) systems. This board is specifically designed for Trane HVAC units and provides reliable control for single-stage heating operations. Its advanced technology and rugged construction ensure efficient and safe operation, making it an ideal replacement or upgrade for your Trane HVAC system. With fast shipping and competitive prices from our HVAC supply store, you can ensure your HVAC system runs smoothly and efficiently.