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NHB-150

high efficiency Condensing Heating Boiler

  • Super condensing efficiency
  • Dual stainless steel heat exchangers
  • SCH40, 2" PVC venting up to 60'
  • ½" Gas pipe up to 40'
  • TDR up to 15:1
  • Integrated controls
Navien NHB-150 condensing heating boiler
NHB-150 certifications
  • Super condensing efficiency
  • Dual stainless steel heat exchangers
  • SCH40, 2" PVC venting up to 60'
  • ½" Gas pipe up to 40'
  • TDR up to 15:1
  • Integrated controls
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NHB-150 premium features and benefits

Nhb
vent connections on top of NHB-H boiler

2" venting up to 65';
3” up to 150’ (including schedule 40 PVC).

dual stainless steel heat exchangers inside NHB-H boiler

The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses.

Navien NHB-55H condensing boiler with cover removed and internal components labeled
dual stainless steel heat exchangers inside NHB-H boiler

The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.

Gas flow control system

The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.

 user control panel for NHB-H boiler

NHB integrated control provides industry-leading options and features including adjustable heat capacity, temp boost for outdoor reset control, adjustable anti-cycle timer and freeze protection.

negative pressure regulating gas valve in NHB-H boilers

1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.

 

NHB-150 QuickFacts

NHB-150 Reviews

NHB-150 FAQs

Error code E001 appears on the front panel when the heat exchanger is over temperature. One possible remedy is to perform an Auto reset, Manual reset, or Power on reset. If that doesn’t work, the service technician should contact Navien’s technical support at 1-800-519-8794.

Error code E302 appears on the front panel when your system has low water pressure. A possible remedy is a Manual reset. If that doesn’t work, the service technician should contact Navien’s technical support at 1-800-519-8794.

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