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NHB-H Series

Condensing Heating boiler

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Navien innovation in a compact wall-hung condensing boiler

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As the leader in condensing technology, Navien has already reinvented the water heating industry with the award-winning NPE tankless water heaters and the NCB-H combi-boilers. The new NHB-H boiler series is the next in line of innovations from Navien. All boilers have Navien’s advanced burner system, an industry-leading AFUE of 95% and turndown ratios up to 15:1.

Now available in four sizes NHB-55H, NHB-80H, NHB-110H and NHB-150H.

15:1

T U R N D O W N
R A T I O

Industry’s largest turndown ratio in the NHB-150H minimizes short cycling and provides better reaction to changing demands throughout the year.

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Built-in hardware to connect and control a boiler pump,
3 zone pumps or
3 zone valves

With Navien’s new PCB design you now have the ability to connect and control a boiler pump, 3 zone pumps or 3 zone valves, all integrated in the unit.

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Advanced
user interface and controls

Navien’s new backlit control panel is simple and intuitive to use with its color‑coded plain text display, and an innovative click wheel for easy navigation through setup, operation, diagnostics, and more.

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New Navien NHB-H boilers

 

 
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NHB-H Stainless Steel Manifold Kit

This system matched stainless steel manifold kit is just another high-quality accessory to help make your installation faster and easier. The kit includes the space heating supply isolation valves, space heating return isolation valves, PRV/air vent/LWCO adapter tree, threaded connection adapter with clip and LWCO plug.

NHB-H primary manifold kit
GXXX002396

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Cascading up to 16 units and common vent up to 8 units

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Navien’s two largest condensing boilers, NHB-110H and NHB-150H, can be cascaded and common vented
 

With our cascading technologies, the number of units operating is determined by the system demand to help meet the hydronic space heating requirements. As demand increases additional units will be enabled to meet higher heating requirements. Conversely, as system demands decreases, the number of operating units will decrease until the heating requirement is met.

The Navien cascading system also balances out the workload of each unit for longer life. The NHB-H is also certified for common venting, reducing the venting and number of terminations required.

NHB-H Models

NHB-55H
Max HTG Input: 55,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-55H condensing heating boiler
View model
NHB-55H
NHB-80H
Max HTG Input: 80,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-80H condensing heating boiler
View model
NHB-80H
NHB-110H
Max HTG Input: 110,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-110H condensing heating boiler
View model
NHB-110H
NHB-150H
Max HTG Input: 150,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-150H condensing heating boiler
View model
NHB-150H
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