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
Get the Natural gas Boiler Navien in just a few steps
Make an order
Contact us to start the process of purchasing a new boiler. Our customer support team will guide you through all the necessary steps.
Arrival of a technician
After confirming your order, our technician will arrive at the appointed time to inspect the property and clarify the necessary 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
You receive a warranty that covers various components and services, and when it ends, you can count on our post-warranty services.
Why should you buy a Boiler Natural gas Navien from us?
9.7/10
215 reviews
4.9/5
1186 reviews
Max's
Oct 31, 2025
I scheduled water boiler maintenance with Superior HVAC, and it was excellent. The technician named Farid was thorough, professional, and explained everything clearly. I’m confident my heater will last longer now.
Brenda McComb
Feb 06, 2026
Excellent service in very tough conditions!
Owen York
May 01, 2026
We woke up to a freezing house on a Sunday morning. I called Superior HVAC and they had Mike out to us within two hours. Our 18-year-old furnace finally gave out, but they managed to get a new one installed that exact same afternoon. Incredible service!
Parambroto Ghosh
Apr 23, 2026
We had an issue with our air conditioner not turning on when it was supposed too. Superior came and found the issue almost instanty. They replaced the part and got it working perfectly again!
Gaton Matarazo
May 10, 2026
Superior HVAC made the AC installation process easy from start to finish. Fair pricing and great communication.
Ethan Holloway
Apr 29, 2026
Superior HVAC installed central air in my home, and I’m extremely happy with the results. The team was professional and efficient. The system cools perfectly. Great service.
We will deliver Boilers Natural gas Navien to any of these cities
Oct 31, 2025
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