NCB-240/130H – Condensing Combi-Boiler – 199,000 BTU DHW / 130,000 BTU HTG

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

Aim high with Navien…

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers…up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise…up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR…15:1 for all models
• Highest residential combi heating TDR… up to 11:1
• Highest number of built-in zone controls for valves or pumps… up to three
• Highest full lineup 2″ PVC venting lengths… up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters… up to 15
• High altitude certification… up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers… as low as 10,700

New Navien NCB-H…the complete combi package and no comprimises

Navien’s innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

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