Navien combi-boiler

Navien’s new NCB-H condensing combi-boiler is packed with industry leading features, including the highest residential DHW Btu up to 210,000 per hour, cascade and common vent capabilities with NPE-2 tankless water heaters, advanced controls with intuitive display and the highest full lineup 2" vent length, up to 65', Navien notes. Navieninc.com