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
Integrated ECM pump and DHW diverter valve on all models
Small zone valve systems may not require an additional pump or a low loss header
Get the Condensing Boiler Gas in just a few steps
Make an order
Order your new boiler today by contacting us. Our dedicated customer support team will assist you through all the necessary steps.
Arrival of a technician
Once the order is confirmed, our skilled technician will promptly arrive at your property to conduct an inspection and clarify any 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
Our warranty covers various parts and services, and even after its expiration, we provide reliable post-warranty services.
Why should you buy a Natural Gas Condensing Boiler from us?
9.7/10
215 reviews
4.8/5
reviews
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!
Mika Morada
Feb 17, 2025
Quick response time! Tech named Ian was skilled and efficient. Air handler is running smoothly again. Great value for the price. Great job Superior HVAC!
Juliet D'Silva
Feb 03, 2025
We hired Superior HVAC to take care of our furnace in our rental property and they did an amazing job! Reard was really nice and professional!!! Thank you so much for your services!
Fawad Ahmed
Jan 11, 2024
It's over 15 years old and has been through worse times, but the tech team they send in for maintenance just resurrected it.
Gaye Normandin
Jul 27, 2025
I was very pleased with the service I received from the technicians who installed my air conditioner and the service person(Sean) who visitedme to determine the problem with my old a/c.Everyone was very knowledgeable, professional and extremely helpful. Iwill definitely call Superior HVAC for any future work!!
We will deliver a boiler condensing gas to any of these cities
Jan 10, 2025
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