Navien NFB-399C Condensing Fire Tube Combi-Boiler – 399,000 BTU, High-Efficiency Gas
$5,525.79
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Description
Navien NFB-399C Condensing Fire Tube Combi-Boiler – 399,000 BTU, High-Efficiency Gas
The Navien NFB-399C Condensing Fire Tube Combi-Boiler is a high-efficiency condensing combi-boiler that delivers whole-home space heating and on-demand domestic hot water from one compact wall-mounted unit.
Key Features
- Patented stainless steel fire tube heat exchanger reduces high-stress point weld failures common on other boilers
- Robotic and automated manufacturing technology for unmatched quality control
- Dual Venturi system creates better combustion control and turndown ratio
- Conversion kit included and orifice for easy field gas convertibility from natural gas to liquid propane
- 160 PSI maximum operating pressure
- Advanced controls with intuitive 7″ color display with intuitive navigation for setup, troubleshooting, and operation
- BAS communication capability
- Easy top and bottom pipe connections for floor or wall-hung installations
Ideal For
The Navien NFB-399C Condensing Fire Tube Combi-Boiler is ideal for homeowners and HVAC professionals replacing a separate boiler and water heater with one space-saving, high-efficiency appliance.


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