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
1180 reviews
Finn Adler
May 07, 2026
Fast response when my AC wouldn't turn on. The technician was friendly and clearly knew what they were doing. Problem solved quickly!
Alessia Fathollahzadeh
Mar 07, 2026
Superior Hvac was able to replace my 17 year old furnace. they came within the same day I called. highly recommend !
Jody Adler
Apr 25, 2026
Very positive experience. The staff was courteous, efficient, and clearly experienced with AC replacements. They made the process easy and hassle-free from start to finish. My new unit works perfectly and has made a noticeable difference already.
Domonique Hatch
May 27, 2026
Our air conditioner maintenance appointment went smoothly and professionally. The HVAC specialist cleaned the unit, checked refrigerant levels, and made sure the system was operating efficiently. He even gave us tips on improving airflow in the house. Excellent experience overall
We will deliver Boilers Natural gas Navien to any of these cities
May 07, 2026
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