Flexcore Symmetrical Firetube boilers bring hydronic heating products to unprecedented levels of operating efficiency. Unlike other manufacturers; from start to finish the Flexcore was designed, developed and engineered by the experts at RBI. Engineered for performance and longevity the Flexcore utilizes a perfectly temperature balanced heat exchanger that provides not only the highest efficiencies but also a durability beyond that of any competitive firetube boiler on the market. Features and Benefits: Up to 99% Maximum Efficiency 95%+ AHRI Certified Symmetrical Firetube Heat Exchanger Variable Volume Flow Full Modulation Patented “Turbo Pilot” Ignition HeatNet 3.0 Integrated Control Platform Touchscreen Programming & Diagnostics Low NOx & CO Modern Jacket Design Premium Efficiency […]