◦SMART CONTROL™ Enhanced Operating System ◦Three Sizes 110,000, 150,000 and 199,999 Btu/Hr ◦95% AFUE Efficiency ◦Industry-Leading DHW Delivery Up to 4.8 GPM ◦True Instantaneous Response ◦Easy Installation and Serviceability ◦User-Friendly Interface ◦Designed, Engineered and Assembled in the USAWebsite Brochures_Info\noble-sales-literature.pdf