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
5/5
1238 reviews
Joanna Rizelle Moreno
Jul 16, 2025
Soft water restored! Water softener repair was quick and easy with their tech guy Daniel. Highly recommend their service. Thank you Superior HVAC, Heating and Air Conditioning
Nerwin B. De Leon
Mar 13, 2025
Great furnace repair service. Technician named Alvin byy was on time and very knowledgeable. Problem fixed, heat restored. Very pleased with the Superior HVAC service
Richard Snyder
Aug 20, 2025
Curtis called ahead and arrived at the time set. He was very professional and friendly.He did his work and gave me useful advice.I was left with options and time to consider choices.I recommend him for his work and ethics.
Wayne Edwards
Oct 31, 2024
The furnace installers were quick and thorough installed things perfectly, and I would recommend this company to everybody I know
Malak Kharnoub
Jan 31, 2025
Excellent HVAC Service!Our furnace stopped working in the middle of a cold snap, so we called Superior HVAC Service. Michael showed up right on time, diagnosed the issue, and fixed it quickly. He also took the time to explain how to maintain the system to avoid future problems. Highly impressed with the level of service—definitely recommend!
Richard Drayton
Jun 05, 2025
Hot water tank malfunctioned. New one installed within four hours without hassle.excellent service.
teddy mendoza
Oct 20, 2025
Excellent service from Chandler at Superior HVAC, Heating and Air Conditioning. He explained the issue clearly and repaired our water heater with expertise. We appreciate the prompt response!"
We will deliver Boilers Natural gas Navien to any of these cities
Jul 16, 2025
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