The Navien NFC-250/200H is a 95% AFUE, Energy Star certified condensing combi-boiler that combines space heating and domestic hot water in a single compact unit. It features a patented stainless steel fire tube heat exchanger, a 15:1 turndown ratio for both heating and DHW, and a new DHW module with mixing and water adjustment valves for consistent hot water delivery.
Key Specifications
- DHW Input: Up to 199,900 BTU/hr
- Heating Input: Up to 210,000 BTU/hr
- AFUE: 95% | Energy Star Certified
- Heating Turndown Ratio: 15:1
- DHW Turndown Ratio: 15:1
- Heat Exchanger: Patented stainless steel fire tube with non-metallic condensate base
- Venting: 2" up to 65 ft, 3" up to 150 ft
- Gas Type: Natural gas or propane (field convertible, kit included)
- Controls: Advanced interface with Setup Wizard
- Zones: Built-in support for 3 zone valves or pumps
- Cascade: Up to 15 NPE units | Common venting: up to 7 NPE units
- Altitude: Certified up to 10,100 ft (NG and LP)
Product Transparency
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What it is: A wall-hung condensing combi-boiler for residential and light commercial space heating and domestic hot water
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Who it is for: Homeowners and HVAC professionals needing a high-output, high-efficiency all-in-one heating and hot water solution
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What it is NOT: This is not a standalone water heater or commercial boiler. Professional installation by a licensed HVAC technician is required.
Shipping & Returns
- Processing time: 1–2 business days
- Estimated delivery: 5–8 business days
- Returns accepted within 30 days of delivery in original, uninstalled condition
