Navien NFC-250/200H – Condensing Combi-Boiler – 199,900 BTU DHW / 210,000 BTU HTG
The Navien NFC-250/200H is a high-efficiency condensing combi-boiler that combines space heating and domestic hot water production in a single compact unit. It delivers 95% AFUE efficiency and is Energy Star certified. The unit features a 15:1 turndown ratio for both heating and domestic hot water, ensuring precise temperature control and energy savings. Equipped with a new domestic hot water module with mixing and water adjustment valves, it provides consistent, comfortable hot water. Advanced controls with an intuitive interface and Setup Wizard simplify installation and operation, while built-in powered connections support up to three zone valves or pumps.
This boiler supports flexible venting options with 2″ pipe runs up to 65 feet and 3″ runs up to 150 feet. Its patented stainless steel fire tube heat exchanger and non-metallic condensate base ensure durability and reliability. The NFC-250/200H is approved for high altitude installations up to 10,100 feet on natural gas and propane, with conversion kits included. It can be common vented with up to seven NPE units or cascaded with up to fifteen units, allowing easy capacity expansion for larger heating demands.
Features
95% AFUE efficiency, Energy Star certified
15:1 turndown ratio for heating and DHW
New DHW module with mixing and water adjustment valves
Advanced controls with Setup Wizard
Built-in powered connections for 3 zone valves or pumps
Venting: 2″ up to 65 feet, 3″ up to 150 feet
Patented stainless steel fire tube heat exchanger
Non-metallic condensate base
High altitude approval up to 10,100 ft (NG and LP) with conversion kits
Common venting up to 7 NPE units; cascading up to 15 units
Applications
Residential and light commercial space heating
Domestic hot water supply for multiple fixtures
Multi-zone hydronic heating systems
High altitude installations
Cascade boiler setups for increased capacity
 
Related Video: NFC-H Condensing Fire Tube Combi-Boiler
 
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