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New NCB-H & NFC-H Series

Condensing Combi-Boilers

Navien residential combi-boilers provide endless hot water on demand, as well as whole house heating for small and large homes

NCB-H Series

The Navien NCB-H lineup offers homeowners higher turndown ratios, wider BTU ranges, longer venting for more flexible installation, an all-new easy-to-use multi-line LCD display with improved controls and intuitive navigation, and an upgraded domestic hot-water module.

 Learn more about the
NCB-H Series

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NFC-H Series

NFC-H high-efficiency condensing fire tube combi-boiler series offers the highest heating and DHW performance ever built into one compact combi-boiler.

 Learn more about the
NFC-H Series

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Navien NCB-H Series

Space heating up to 150,000 BTU/H  |  DHW up to 210,000 BTU/H


Navien NFC-H Series

Space heating up to 199,900 BTU/H  |  DHW 210,000 BTU/H


The ultimate
high efficiency combi-boilers
do it all... from the smallest apartments to larger homes

  • AFUE 95% Energy Star certified
  • Backed by the industry’s strongest warranty—10 years on heat exchangers
  • Takes less space than floor standing boiler and tank water heater
  • Can be cascaded with Navien NPE-2 water heater for increased DHW flow demand
  • Easy to use control panel
  • Elegant, clean appearance
  • Ideal for replacements or new construction
  • Optional NaviLink™ WiFi remote control system
  • Optional NaviClean™ magnetic filtration system

Learn more about
the NCB-H Series

Learn more about
the NFC-H Series



Hot Water Innovation
Homeowners Can Trust


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    Durable Heat Exchangers

    Navien combi-boiler heat exchangers are built with durable stainless steel.

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    Low run cost

    A separate stainless steel flat plate heat exchanger for DHW creates one of the highest flow rates for any combi‑boiler in the industry. Up to 5.4 GPM @ 70º temperature rise.

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    Remote temperature control

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

  • Nfc-feature-venting

    Multiple venting options

    Low exhaust gas temperatures allow the use of PVC, CPVC, polypropylene (rigid and flexible), and stainless steel venting reducing installation time and costs. The system can use 2" venting for up to 65', or up to 150' with 3" venting.

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    Low noise levels

    Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running Navien combi-boilers.

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    Precise temperature control adjustment

    The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive combi-boiler cycling and enhances temperature control for DHW. (NFC-H 11:1 for heating and up to 15:1 DHW; NCB-H 6:1 heating, 11:1 DHW)


Explore Navien Combi-boiler Applications

Navien Combi boilers offer endless hot water on demand for any size home, and with heat inputs up to 199,000 BTU/H, they are compatible with a variety of whole house heating applications such as finned tube and cast iron baseboards, radiant floor heating systems, fan coils, radiators, and air handlers.

  • Domestic hot water (showers and faucets)

  • Finned tube baseboards

  • Cast iron baseboards

  • Radiant floor heating

  • Fan coils

  • Radiators

  • Air handlers

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.


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