NHB-55

Subnav Toggle
NHB
NHB-55 certifications
NHB-55
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 7:1
  • Integrated controls
<< See other models
Credits & Rebates Finder
Find Sales Rep

NHB: the inside story

Inside the NHB
Navien Rebate Finder
Installer/Service Locator
Distributor/Sales Rep
Product Registration
Training

Use our NPE sizing calculator

Select the right size for your NPE

Download the Navisizer app

Navien Rebate Finder

Navien Installer/Services Locator

Find the nearest Navien Service Specialist including installers and service providers.

Distributor & sales rep locator

Enter your state, city, or zip code to find a Navien Sales rep or distributor near you.

Product Registration

Online Product Registration

Navien uses the information from our web site to measure statistics such as: number of visits, pages visited, and information requested. 
Navien will never send unsolicited e-mail or share the e-mail or url address with other companies.

Customer Information

See Privacy Policy about collection and usage of your Personal Information.

Product Information

Product Serial number is 15-16 digits and can be found either on the right side of the box or the back of the front cover.
Navien, Inc. Technical Customer Service Department

Training Information

Navien Academy
Go to Calendar

In-Field Training
Find training near you