The Hot Surface Ignitor (HSI) from RHEEM MFG COMPANY is a critical component for reliable ignition in gas appliances. This ignitor features a high-temperature ceramic construction, ensuring durability and longevity. Designed to operate efficiently at high voltages, it provides a quick and consistent ignition source, enhancing the performance of heating systems. Its compact size allows for easy installation in various RHEEM models, ensuring compatibility and compliance with industry standards. Upgrade your heating system with this essential part for improved efficiency and reliability.