The Rheem AC Unit is a furnace control board designed specifically for Rheem brand systems. It is a corded electric unit with a 1-phase power source, made in the United States. This product is essential for controlling the heating and cooling functions of your furnace, ensuring optimal performance and efficiency. Perfect for homeowners looking to replace or upgrade their existing Rheem AC unit, this product is a reliable and high-quality choice for maintaining a comfortable living space.