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
5/5
1238 reviews
RobbieG Tomtom
Oct 30, 2024
Neil and his team from Superior were great to deal with. They came same-day and the new furnace took only @ 2 hours to fully install.He was extremely thorough and gave me things to expect and look for with anew furnace and to call them if I had any concerns or questions.Also walked me through the functions of my new Smart-thermostat which is wonderful.RobG, Cambridge ON
Peter Penesis
Jan 15, 2025
These guys really know their stuff! Our furnace went down earlier in the week and our house was freezing! George was able to come and asses right away, and provided solutions that worked well for our family and budget. I highly recommend Superior Heating and Air Conditioning!
milan torak
Oct 18, 2025
Boiler breakdown during a snowstorm? Superior HVAC Heating and Air Conditioning emergency plumber Kurtis saved my pipes (and my sanity)! Now my radiators hum Taylor Swift. Cold weather who?
Clyde Leaño
Jul 12, 2025
Tyler, a technician from Superior HVAC, Heating and Air Conditioning, provided excellent service and a smooth repair for my water softener that wasn't regenerating properly. I'm very happy with their prompt response.
Nico Vargas
Jul 10, 2025
Furnace wasn’t heating evenly. Now it’s perfect. Friendly tech named Jemmar and great value for the fix. Thank you Superior HVAC, Heating and Air Conditioning
Len Corrado
Jul 30, 2025
Our AC stopped working in the middle of a heat wave. We had an HVAC Emergency Service and MTCE contract with another company. The soonest they could get a technician to us was 72 hours later. We called Superior and they had a technician to us within 2 hours of our call and a new AC unit installed and running within 15 hours.Professional, knowledeable respectful, timely, efficient and great communication.
We will deliver a boiler condensing gas to any of these cities
Oct 30, 2024
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