The NFB-H series of High Capacity Condensing Fire Tube Heating Boilers provide the highest heating output while maintaining peak energy efficiency thanks to Navien's fire Tube technology. Other features include:
- Patented stainless steel fire tube heat exchanger, which reduces high stress point welds
- Advanced user interface with intuitive text display and a Quick Dial Wheel for easy navigation
- Smart controls with Setup Wizard to simplify boiler start up
- Built-in 3 zone pumps or 3 zone valves powered connections
- Optional NaviLink Wi-Fi remote control
- Cascade up to 16 boilers
- Up to 15:1 turndown ratio
- AFUE 95% - Energy Star certified
- Compact, lightweight, wall hung design saves space over traditional floor standing boilers