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Navien North America - NCB-240/130H - Combi-Boiler

The Navien NCB-240/130H is a high-efficiency condensing combination boiler engineered to deliver whole-home hydronic space heating and continuous domestic hot water from a single, wall-mounted footprint. Designed for residential applications, it eliminates the need for a separate traditional water heater tank while maximizing energy efficiency and indoor utility space.

Key Features

• Dual Heating Performance: Provides up to 130,000 BTU/h for hydronic space heating and up to 210,000 BTU/h for domestic hot water production, ensuring rapid hot water response without compromising central heating comfort.

• Condensing Stainless Steel Heat Exchangers: Dual heavy-duty stainless steel heat exchangers resist corrosion and maximize heat transfer, delivering ultra-high efficiency and long-term durability.

• Turndown Ratio & Energy Efficiency: Operates with a wide modulation range (up to 15:1 for domestic hot water and 11:1 for heating), reducing burner cycling and lowering fuel consumption.

• Flexible Venting Options: Compatible with 2-inch and 3-inch PVC, CPVC, polypropylene, and stainless steel venting, allowing for extended vent runs and simplified retrofit installations.

• Field Gas Convertibility: Supports easy conversion between Natural Gas (NG) and Liquid Propane (LP) using included conversion components.

• Smart Diagnostics & Control: Features an intuitive digital interface for precise temperature adjustments, system monitoring, and diagnostic troubleshooting.

Technical Specifications

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