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Commercial Boilers

High Efficiency Condensing Heating Boilers

Navien NFB-700C Series commercial boiler, Navien NFB-C Series commercial boiler, Navien NFB-H Series commercial boiler, and Navien NHB-H Series commercial boiler
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Navien commercial condensing boilers deliver cost-effective, high-efficiency solutions for a wide variety of applications

Navien commercial boilers

Four series to choose from

Navien offers high-efficiency commercial heating boilers for all types of businesses.

  • NHB-H Series Compact, wall-hung design available in four sizes up to 150,000 BTU/h.
  • NFB-H Series — Wall-hung fire tube boiler with patented stainless steel heat exchanger, available in two sizes up to 199,900 BTU/h.
  • NFB-C Series — Wall-hung commercial fire tube boiler with building management system connectivity (Modbus, BACnet & LonWorks), available in two sizes up to 399,000 BTU/h.
  • NFB700-C Series — Navien’s first floor-standing commercial fire tube boiler, available in four sizes up to 1,000 MBH with advanced controls and installation flexibility.

Advantages of Navien commercial boilers:

  • Highest efficiency — up to 97.5% AFUE
  • Up to 15:1 turndown ratio (industry’s largest)
  • Backed by Navien’s warranty — up to 15 years on heat exchangers
  • Intuitive controls for easy setup, operation, and troubleshooting
  • Easy conversion from NG (natural gas) to LP (liquid propane) — kit included
  • Quiet operation with a clean, professional appearance
  • Ideal for both replacements and new construction

Find an Installer

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Navien's technological innovations make our condensing boilers the best choice for commercial applications

Navien's technological innovations make our condensing boilers the best choice for commercial applications

  • Building owners or property managers appreciate the efficiency, reliability and durability of Navien condensing boilers over older, less efficient systems.
  • Commercial builders add customer-pleasing design and technology that sets them apart.
  • Contractors benefit from features offering cost savings and flexibility of installation saving time.
  • Industry-leading commercial warranty and customer support gives everyone peace of mind
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Learn more about
NHB-H Series

Learn more about
NFB-H Series

Learn more about NFB-C Series

  • Building owners & property managers appreciate the efficiency, reliability & durability of Navien condensing boilers over older, less efficient systems.
  • Architects & engineers value the space-saving wall-hung designs and the flexibility of floor-standing configurations to meet higher-capacity needs.
  • Commercial builders benefit from advanced technology and clean, professional designs across both wall-hung and floor-standing models.
  • Contractors benefit from features offering cost savings and flexibility of installation, saving time.
  • Our commercial boiler systems can be cascaded & common vented to balance workload for a longer service life.
  • Optional Wi-Fi remote control systems make it easy to monitor & control commercial boilers remotely.
  • Industry-leading commercial warranty & customer support gives everyone peace of mind.
Navien NFB-C commercial boiler shown with cover on and with cover off and components visible
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