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 Navien Condensing Gas Boiler 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
After the assessment, we will deliver the boiler to you. Our experts will carry out 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 Condensing Gas Boiler Navien from us?
9.7/10
215 reviews
4.9/5
1200 reviews
Angelo Pascual
Jul 10, 2025
Service was excellent! Their tech guy Jemmar diagnosed a capacitor issue and replaced it promptly. Air is flowing working great again. Excellent experience with Superior HVAC, Heating and Air Conditioning
shahed alhalabi
Jan 31, 2025
Really good service
Antonino Soriano
Mar 13, 2025
Great repair service! Their tech guy named Brian were knowledgeable and fixed the issue with my air handler quickly. I'm very satisfied with their work. Great job Superior HVAC
Elizabeth Janik
Jan 10, 2025
Hired for a water heater diagnosis - did an excellent job! George was very responsiveand was able to provide results. All around, great customer service!
MarĂa Conchita Fernández Vargas
Feb 6, 2025
Our water heater stopped working, and Superior HVAC came out the same day! Cameron was professional, quick, and super friendly. Highly recommend their services!
Evelyn Valera
Apr 23, 2025
Very professional service. The quote was given on site and all the questions were answered.
Honey Aira Galisim
Jul 7, 2025
Superior HVAC, Heating and Air Conditioning provided excellent service by fixing an ignition issue on the same day. I was particularly impressed by Michael, their technician, who demonstrated impressive knowledge and responsiveness. Now, everything is working flawlessly.
We will deliver a gas boiler Navien condensing to any of these cities
Jul 10, 2025
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