Advanced user interface with Setup Wizard is made easy with backlit panel, click-wheel control and intuitive text.
Low gas pressure operation. Negative pressure regulating gas valveensures maximum performance all the way down to 3.5" of water column on natural gas and 8" of water column on propane gas.
Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions.
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.
Patented stainless steel fire tube heat exchanger Navien’s innovative heat exchanger design is ASME‑Certified,“H” Stamped, and reduces high-stress point weld failures common on other combi-boilers.
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.
The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses.
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.
The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.
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
The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses
2" venting up to 65'; 3” up to 150’ (including schedule 40 PVC)
The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling
Integrated ECM pump and DHW diverter valve on all models
Small zone valve systems may not require an additional pump or a low loss header
Get the Condensing Boiler Gas in just a few steps
Make an order
Order your new boiler today by contacting us. Our dedicated customer support team will assist you through all the necessary steps.
Arrival of a technician
Once the order is confirmed, our skilled technician will promptly arrive at your property to conduct an inspection and clarify any details.
Delivery and installation work
We'll deliver the boiler to your location, and our experienced experts will handle the installation efficiently and professionally.
Get a warranty
Our warranty covers various parts and services, and even after its expiration, we provide reliable post-warranty services.
Why should you buy a Natural Gas Condensing Boiler from us?
9.7/10
215 reviews
4.9/5
1180 reviews
Shesagui
Feb 5, 2025
George fixed my tankless water heater. I wouldn’t choose anyone else but Superior HVAC.
Kyla Winegarden
Mar 13, 2025
Conner replaced our heat pump, and from start to finish, he made the process stress-free. He was on time, super polite, and even made sure to clean up after himself (which I really appreciated). Our new system works perfectly, and I’m already noticing the difference. Thanks again, Conner!
aracely cervantes
Feb 7, 2025
Ian was incredibly thorough in his work. He diagnosed our air handler issue precisely and ensured everything was working before he left!
Lui Geronimo
Feb 11, 2025
service from superior hvac services was excellent! Ian replaced our water heater, and the entire process went seamlessly.
Ella Rhose Tadiosa
Feb 7, 2025
Ian from Superior HVAC services was highly professional and courteous. He arrived on time, efficiently repaired our water heater, and even took the extra step to inspect our furnace to ensure everything was working properly.
Evelyn Valera
Apr 23, 2025
Very professional service. The quote was given on site and all the questions were answered.
We will deliver a boiler condensing gas to any of these cities
Feb 5, 2025
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