The Endura line of condensing hydronic boilers is the latest addition to Fulton’s product offerings for the commercial heating market. Offered in sizes 1.5 million Btu/hr. (EDR-1500) and 2 million Btu/hr. (EDR-2000), the Endura is a vertical firetube-design boiler with a compact footprint. It features a high-quality, duplex stainless-steel three-pass heat exchanger with enhanced fireside surfaces and offers less than 20 ppm NOx emissions, full input with 4” wc incoming natural gas pressure, 120V single-phase power supply and up to 8:1 turndown.