The Cast Iron Heat Exchanger with Pump Header (1826-1758) from RHEEM MFG COMPANY is engineered for superior heat transfer in gas water heating systems. This heat exchanger is constructed from durable cast iron, ensuring longevity and reliability. It is designed to fit various RHEEM models, providing efficient performance. The unit meets ANSI standards, ensuring safety and compliance. Ideal for both residential and commercial applications, this heat exchanger is essential for optimizing the efficiency of your heating system, making it a critical component for effective water heating.