Navien NCB Combi-Boiler
The Navien NCB is the first high efficiency tankless condensing combination boiler with the capacity to supply both heat and domestic hot water for larger homes - enough hydronic heat for a whole house, plus hot water to run two showers and a dishwasher all at the same time.
Space saving design
- Occupies 80% less space than a traditional floor standing boiler and tank water heater.
Gallons per minute at 77° temperature rise
- 3.4 GPM - 4.5 GPM
- Separate stainless steel flat plate heat exchanger for dhw creates the highest flow rate for any combi-boiler in the industry.
Annual Fuel Utilization Efficiency (AFUE)
- 93.3% - 93.6%
Space Heating / British Thermal Unit (BTU)
- 80,000 BTU - 120,000 BTU
Domestic Hot Water / British Thermal Unit (BTU)
- 150,000 BTU - 199,900 BTU
Navien Combi-Boiler Warranty
- 5 year LeBlanc Labor warranty
- 5 year Navien parts warranty
- 10 year Navien heat exchanger warranty