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Commercial Boilers
High Efficiency Condensing Heating Boilers


Navien commercial condensing boilers deliver cost-effective, high-efficiency solutions for a wide variety of applications

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
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Commercial Heating Boiler Applications
Because our commercial condensing boilers are highly energy efficient, they’re a perfect fit for businesses and organizations that prioritize eco-friendliness and reducing their carbon footprint.
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Multi-family housing & dormitories
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Hotels & resorts
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Restaurants & clubs
- Retail stores
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Educational facilities
- Business offices
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Medical facilities
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Industrial applications
- Manufacturing plants
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Municipal facilities
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

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.
