Navien NCB-240/110H Combi Boiler/WH 199,900 DOM 110,000 Heat NAT/LP Gas

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The Navien NCB-240/110H is a high-efficiency condensing combination boiler built to deliver dependable hydronic space heating and high-capacity domestic hot water from a single compact, wall-hung unit. Engineered to serve mid-to-large residential spaces, it replaces bulky traditional storage water heaters and standalone boilers to maximize energy savings and free up mechanical room floor space.

Key Features

• High-Performance Dual Capability: Provides up to 110,000 BTU/h for hydronic space heating and up to 210,000 BTU/h for domestic hot water, supplying ample heating comfort alongside high-flow, continuous hot water for multiple fixtures.

• Dual Stainless Steel Heat Exchangers: Robust, corrosion-resistant dual stainless steel heat exchangers optimize heat recovery, resist scale accumulation, and ensure long operational life in condensing environments.

• Exceptional Turndown Ratio: Delivers wide modulation (up to 15:1 for DHW and 11:1 for heating) that automatically matches flame output to current demand, preventing unnecessary fuel consumption and equipment wear.

• Flexible Venting Options: Compatible with 2-inch venting (up to 65 ft) and 3-inch venting (up to 150 ft) using PVC, CPVC, polypropylene, and stainless steel to simplify retrofits and complex routing paths.

• Field Gas Convertibility: Easily convertible between Natural Gas (NG) and Liquid Propane (LP) on-site using the included conversion kit.

• Digital Interface & Diagnostics: Equipped with an intuitive front-panel control system for straightforward temperature adjustments, operation status monitoring, and rapid troubleshooting.

Technical Specifications

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