The Navien NCB-H condensing combi boiler delivers high-efficiency space heating and endless domestic hot water in a compact wall-hung design. With up to 95% AFUE efficiency, DHW output up to 210,000 BTU/h, and flow rates up to 5.4 GPM, it supports whole-home comfort in a single system. Key features include a 15:1 DHW turndown ratio, dual stainless steel heat exchangers, built-in zone controls, and optional Wi-Fi connectivity with NaviLink, making it a flexible, high-performance solution for modern heating applications.

• Smart controls LCD display, quick dial wheel & Setup Wizard
• Advanced stainless steel dual heat exchangers
• 15:1 DHW and up to 11:1 heating TDR
• 2" venting up to 65', 3" venting up to 150'
• Built-in 3 zone pumps and 3 zone valves powered connections
• Smart, compact technology designed for a complete and efficient hybrid home