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
4.8/5
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.
Sophia Gineto
Dec 09, 2025
Ryan from Superior HVAC Service performed a full duct cleaning and balanced airflow through each vent. The house feels evenly heated for the first time this winter.
sana hourani
Jan 31, 2025
Outstanding Service!I had a concern with my AC unit, and Superior HVAC did not disappoint. Sarah was prompt, courteous, and fixed the issue in no time. She even took the time to clean the unit and check for any potential future issues. I couldn’t be happier with the service I received.
Isay Elloso
Feb 20, 2025
Fast, professional, and precise installation for my air handler. They've explained everything clearly and cleaned up afterward. Thank you Ian, their tech guy. Couldn’t be happier with the results. Would absolutely hire them again! Keep up the good work Superior HVAC!
Jen Breble
Dec 17, 2025
We called Superior HVAC Service because our heat wasn’t traveling through our home properly, After no time at all they arrived, they diagnosed that it was due to our heat pump failed and Tim proved to be reliable, professional and explained everything clearly. The installation was quick and efficient and the new system is working great. Highly recommend the Superior HVAC Service
Alexia Fiddes
Dec 22, 2025
Ryan from Superior HVAC came and diagnosed my old furnace. I went with the new furnace that they offered and they were very efficient when installing it. Works perfectly I highly recommended!
We will deliver Boilers Natural gas Navien to any of these cities
Oct 31, 2025
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