The Rheem Program Chip RTG20235G is specifically designed for natural gas applications, enhancing the performance of your water heater. This chip is essential for optimizing the operation of your heating system, ensuring efficient gas usage and reliable performance. It is compatible with various Rheem models, making it a versatile choice for your heating needs. The chip's compact design allows for easy installation, and it meets industry standards for safety and efficiency. Upgrade your water heater's functionality with this essential program chip.