The Noritz Heat Exchanger Kit for NR71-SV models is designed to enhance the efficiency of your tankless water heating system. This comprehensive set includes all necessary components for a complete installation, ensuring optimal performance and reliability. Constructed from high-quality materials, the heat exchanger is engineered to withstand high temperatures and pressures, promoting longevity. Its precise design facilitates efficient heat transfer, maximizing energy savings. Ideal for both residential and commercial applications, this kit is essential for maintaining the performance of your heating system.