The Navien NFC-250/200H Condensing Combi Boiler is a premium high-efficiency heating and domestic hot water solution designed for residential and light commercial applications. Built with advanced condensing technology and intelligent system controls, this unit delivers powerful performance, energy savings, and reliable year-round comfort.
With a 95% AFUE efficiency rating and ENERGY STAR® certification, the NFC-250/200H is engineered to maximize fuel efficiency while reducing operating costs. Its 15:1 turndown ratio for both domestic hot water (DHW) and space heating ensures precise modulation, stable temperature control, and improved system efficiency even under low-demand conditions.
The Navien NFC-250/200H Condensing Combi Boiler is designed for maximum flexibility and high-performance heating systems. Its advanced modulation technology and high turndown ratio allow the system to adjust precisely to household demand, improving comfort while reducing energy waste.
The integrated DHW module ensures stable hot water delivery with enhanced control over temperature and flow, while the built-in zone control capability simplifies multi-zone heating system installations. Its cascading and common venting features also make it ideal for larger or expandable heating system designs.
| Item | NFC-250/200H |
| Dimensions | 43.9cm W x 85.1cm H x 43.9cm D (17.3" W x 33.5" H x 17.3" D) |
| Boiler Weight | 64 kg (141 lbs) |
| Boiler Weight With Water | 77.1 kg (170 lbs) |
| Installation Location | Indoor wall-hung |
| Venting Type | Forced draft direct vent |
| Ignition | Electronic ignition |
| Natural Gas Supply Pressure | 3.5 " WC to 10.5 " WC |
| Propane Gas Supply Pressure | 8 " WC to 13.5 " WC |
| Natural Gas Manifold Pressure (min-max) | -0.03 " WC to -0.92 " WC |
| Propane Gas Manifold Pressure (min-max) | -0.02 " WC to -0.77 " WC |
| Power Supply | 120V AC, 60Hz |
| Maximum Power Consumption | Less than 15 amperes |
| Casing Material | Cold-rolled carbon steel |
| Heat Exchangers | Stainless steel |
| Vent Exhaust | 2” or 3” PVC, CPVC, polypropylene, stainless steel, approved gas vent type BH (Class III A/B/C) |
| Vent Intake | 2” or 3” PVC, CPVC, polypropylene, stainless steel, approved gas vent type BH (Class III A/B/C) |
| Vent Clearances | 0" to combustibles |
| Safety Devices | Flame rod, APS, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, water pressure sensor, burner high limit fuse, vent installation detector |
| Temperature Setting Range | 30 - 60 °C (86 - 140 °F) |
| Product | Labor | Parts | Heat Exchanger |
| Residential* | 1 Year | 5 Years | 10 Years |
| Commercial | 1 Year | 3 Years | 5 Years |
* Applies only to single family, residential locations.
Pacific Blue Mechanical provides complete supply, installation, repair, and maintenance services for the Navien NFC-250/200H Condensing Combi Boiler across Metro Vancouver. Whether you are upgrading an outdated heating system, building a new high-efficiency mechanical setup, or replacing an existing boiler, our licensed technicians deliver end-to-end solutions designed for long-term reliability and performance.
If requested, we can directly source and supply the NFC-250/200H for your project and manage the full installation process from start to finish. This includes proper system sizing, gas line connection, venting configuration, hydronic integration, zoning setup, and full commissioning to ensure safe and optimal operation from day one.
We also provide ongoing maintenance and service support for existing Navien combi boiler systems. This includes diagnostics, troubleshooting, descaling, performance optimization, component replacement, and preventative maintenance to help extend equipment lifespan and maintain peak efficiency.
If your system is experiencing issues such as inconsistent heating, hot water fluctuations, pressure drops, ignition errors, or system faults, our experienced technicians can quickly diagnose the problem and recommend the most cost-effective solution.
From full system installation to emergency repairs and routine maintenance, Pacific Blue Mechanical delivers reliable, professional service focused on efficiency, safety, and long-term comfort for your home or property.
The system achieves 95% AFUE efficiency using advanced condensing technology and precise modulation with a 15:1 turndown ratio.
Yes. It has built-in support for up to 3 zone valves or 3 zone pumps, making it ideal for multi-zone heating systems.
Yes. Its high capacity and cascading capability (up to 15 units) make it suitable for larger residential and light commercial buildings.
Yes. It is approved for operation up to 10,100 ft with included conversion kits for natural gas and propane.
Yes. It supports common venting for up to 7 units and cascading configurations up to 15 units for scalable heating systems.
