High Efficiency Condensing Heating Gas Boiler, Space Heating 55,000 – 150,000 BTU/h, AFUE 95%, Energy Star Certified.
Flexible Venting: 2″ venting up to 65′; 3” up to 150’ (including schedule 40 PVC).
Dual stainless steel heat exchanger: The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses.
High Turndown Ratio: The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.
Easy Installation for Retrofit Application: 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 integrated control: 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.
Limited Warranty: 5 Years Parts, 10 Years Heat Exchanger and 2 Years Our Labor Warranty
Space Heating Input
55,000 – 155,000 BTU/h
Energy Star Certified:
Heat Exchanger Warranty:
2 Years (House Depot)
Navien NHB Brochure
Navien NHB QuickFacts
House Depot is providing HVAC and electrical services to the following areas: