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Now the innovator in high efficiency condensing tankless water heaters
and fire tube boilers puts it all together in one amazing combi-boiler in 2 sizes:
NFC-175 & NFC-200.
The NFC combi-boiler package comes
with 16 extras, including:
Navien’s advanced patented stainless steel heat exchanger design is ASME‑Certified,
“H” Stamped, and reduces high stress point weld failures common on other combi-boilers.
This compact, in‑house designed and manufactured heat exchanger uses the latest automated
laser welding technology to deliver superior product quality.
Navien’s advanced patented stainless steel heat exchanger design is ASME‑Certified, “H” Stamped, and reduces high stress point weld failures common on other boilers. This compact, in‑house designed and manufactured heat exchanger uses the latest automated laser welding technology to deliver superior product quality.
New advanced performance built-in DHW module
Navien’s new innovative domestic hot water heat exchanger now generates even more hot water, giving customers the ability to run up to 3 showers and a dishwasher, all at the same time.
Separate DHW stainless steel flat plate heat exchanger
Navien’s new innovative domestic hot water heat exchanger now generates even more hot water, giving customers the ability to run up to 3 showers and a dishwasher, all at the same time.
Integrated boiler pump for space heating and DHW. No need for an external boiler pump saving installation time, space and costs.
DHW SS flat plate heat exchanger 5.4 GPM @ 67°F temperature rise. One of the highest flow rates in the industry.
New mixing valve.
New easy access 3-way valve.
New flow adjustment valve.
Water feed valve.
Dual inputs of up to 199k BTU/H for heating and 199k BTU/H for DHW
Satisfies all the space heating and domestic hot water requirements of most typical large homes.
Low noise levels
Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NFC combi-boilers.
Turndown ratio of 11:1 for heating and 11:1 for DHW
The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste, preventing excessive boiler cycling and enhancing temperature control for DHW.
Multiple venting options
Low exhaust gas temperatures allow use of PVC, CPVC, polypropylene (rigid and flexible) and stainless steel venting reducing installation time and costs. System can use 2" venting for up to 60', or up to 150' with 3" venting.
Patented stainless steel fire tube heat exchanger
Navien’s advanced patented stainless steel heat exchanger design reduces high stress point weld failures and provides improved corrosion resistance resulting in longer life.
Uses existing 1/2" gas piping
Save time and effort in retrofit applications with 1/2" gas lines for up to 24' in length (subject to local code).
5.4 GPM @ 67° temperature rise for DHW
Separate stainless steel flat plate heat exchanger for DHW creates one of the highest flow rates for any combi‑boiler in the industry
Dual Venturi and field gas convertibility
Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NFC Series combi-boiler.
Advanced user interface, control and circuitry
Navien’s new backlit control panel uses simple, intuitive color-coded text and an innovative click wheel for easy information input. Built-in three zone pump control allows for quick and easy system integration.
Expanded DHW capability
For increased domestic hot water flow demand, the NFC can be cascaded with Navien NPE units.
Navien’s new backlit control panel is simple and intuitive to use with its color‑coded plain text display, and an innovative click wheel that improves usability for all information input.
With Navien’s new PCB design you now have the ability to connect 3 zone pumps.
Optional magnetic boiler filter
The NaviClean™ is designed to work with Navien NFC, NCB-E, NHB and NFB Series boilers. It is best suited for heating systems with 1" to 1-1/4" copper or black iron pipes. It features a permanent magnet mounted inside the glass reinforced nylon housing.
Navien’s NFC manifold kits are ideal for hydronic space heating applications. With these manifolds, we have done the piping work for you. Both primary and secondary loop manifold kits are designed to work on all NFC models for fast and clean installations. All you need to add is your own appropriately sized pump.
NFC Primary Manifold Kit (Included)
Secondary Manifold Kit
GFFM-SKTZUS-001
For increased domestic hot water flow demand, one NFC combi-boiler can be cascaded with up to 15 NPE tankless water heaters. Also the Navien cascading system automatically balances each unit’s workload for enhanced longevity.
One NFC combi-boiler can be common vented with up to 7 NPE tankless water heaters. The NFC/NPE systems are approved for single pipe (exhaust) and dual pipe (fresh air intake and exhaust) installations.
NaviLink makes it easy to communicate with your Navien systems anywhere internet service is accessible. The NaviLink module attaches easily to any new or existing* Navien tankless water heater, combi‐boiler and boiler.
* Existing installations may require the purchase of a new main PCB and front control panel.
Available for Download
on IOS or Android
