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NFC-H Series

Condensing fire tube combi-boilers

Navien NFC-H condensing fire tube combi-boilers, the ultimate space heating and DHW comfort package

More features, more benefits, more extras and more value... all in one package

Now the innovator in high efficiency condensing tankless water heaters and fire tube boilers puts it all together in one amazing combi-boiler.

  • Nfc-feature-exchanger

    Patented one-piece stainless steel fire tube heat exchanger

    Navien’s advanced patented one-piece stainless steel heat exchanger design reduces high stress point weld failures.

  • Nfc-feature-flat-plate

    High flow rates

    Separate stainless steel flat plate heat exchanger for DHW creates one of the highest flow rate for any combi‑boiler in the industry... Up to 5.4 GPM @ 67º temperature rise.

  • Nfc-feature-navilink

    Optional NaviLink™ Wi-Fi control system

    The NaviLink™ Wi-Fi control system provides access to NFC-H condensing combi-boiler from anywhere in the world

  • Nfc-feature-venting

    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 65', or up to 150' with 3" venting.

  • Nfc-feature-closet-lvg-room

    Low noise levels

    Installations in or near meeting rooms, offices or any areas
    of the building are possible
    with the quiet running Navien combi-boilers.

  • 10-1-ratio-nfb-2

    Turndown ratio of up to 15:1 for heating and 15:1 for DHW

    The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.


Navien combi-boiler applications

  • Domestic hot water
    (showers and faucets)

  • Finned tube baseboards

  • Cast iron baseboards

  • Radiant floor heating

  • Fan coils

  • Radiators

  • Air handlers


Navien NFC-H
high capacity fire tube

  • AFUE 95.0% Energy Star certified
  • Backed by one of the industry’s strongest warranty
    — 5 years on heat exchangers for commercial
  • Space saving design
  • Can be cascaded with Navien NPE water heater for extraordinarily large demand
  • Easy to use control panel
  • Elegant, clean appearance
  • Ideal for replacements or new construction
Click here to learn more about the NEW NFC-H Series
  • Smart controls with LCD display, quick dial wheel and Setup Wizard
  • Patented stainless steel fire tube heat exchanger with non-metallic
    condensate base
  • 15:1 DHW and up to 15:1 heating TDR
  • Field convertible gas system (NG/LP)
    up to 10,100 ft.
  • Capable of cascading up to 15 NPE
    tankless water heaters
  • Capable of common venting up to 7 NPE tankless water heaters
  • Built-in 3 zone pumps and 3 zone valves powered connections
  • 2” PVC, CPVC, PP and SS venting material approved up to 65'
  • 3” PVC, CPVC, PP and SS venting material approved up to 150'
  • Built-in DHW control valves for added comfort

Lower energy bills, easier on the planet

Navien condensing stainless steel heat exchangers recover extra heat that would be lost in non-condensing boilers. The result is a reduction in energy consumption, lower CO2 emissions and low exhaust temperatures allowing the use of less expensive venting materials such as Schedule 40 PVC.


The ultimate in energy efficiency


Navien condensing combi-boilers are Energy Star certified, providing an AFUE of 95.0%. These extremely efficient and eco-friendly units provide extra energy savings over a traditional floor standing boiler and storage tank.

Click here to learn more about NFC-H
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