Navien NCB-240/130H – Condensing Combi-Boiler – 199,000 BTU DHW / 130,000 BTU HTG
The Navien NCB-240/130H is a high-efficiency, 95% AFUE condensing combi-boiler that delivers both space heating and domestic hot water in a single wall-hung unit. Designed for performance and convenience, it features a maximum heating input of 130,000 BTU/hr and a DHW input of up to 199,000 BTU/hr. The unit supports both natural gas and propane, with field conversion included, and offers flexible venting options using 2″ or 3″ PVC, CPVC, polypropylene, or stainless steel.
The NCB-240/130H includes dual stainless steel heat exchangers, integrated smart controls with an LCD display, and built-in support for three heating zones. With advanced turndown ratios and Energy Star certification, it’s engineered to optimize energy use while maintaining consistent comfort in residential heating applications.
Features:
- 95% AFUE efficiency rating
- 130,000 BTU/hr heating input
- 199,000 BTU/hr DHW input
- Dual stainless steel heat exchangers
- 10:1 heating turndown ratio
- 15:1 domestic hot water turndown ratio
- Smart controls with LCD display and setup wizard
- Integrated 3-zone controller for zone valves or circulators
- Field convertible from natural gas to propane (kit included)
- Compact wall-hung design
- Energy Star certified
- Built-in freeze protection and advanced safety controls
- Supports cascading with up to 15 NPE units
Applications:
- Whole-home heating and on-demand hot water
- Residential homes using natural gas or propane
- Indoor wall-mounted installations
- Projects requiring high-efficiency boiler systems
- Smart home setups using Navien controls
- Systems needing multi-zone heating integration
