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
4.8/5
0 reviews
Natasha Lebedeva
Nov 28, 2023
Eathon showed up to check my furnace and explained my concerns and did it so I could understand showed up in a timely manner and I appreciate that plus Eathonis very pleasant and courtesy thank you Eathon.
Рома x
Feb 3, 2025
My boiler stopped heating properly, so I called Superior HVAC Service. Sean arrived promptly, found the issue right away, and had it fixed quickly. Before leaving, he also checked my furnace to make sure everything was running efficiently. The service was professional, seamless, and exceeded my expectations!
Franco Miguel Nangan
Mar 8, 2025
My friend recommended Superior HVAC to me. I got to talk to one of their technician, Neil. After talking about how long the installation and the process is, Neil set a schedule of installation at my home. He and his team did a great job in installing a new furnace at my home.
Perry Meredith
Oct 25, 2023
This HVAC company is without a doubt the best when it comes to getting things done. You can be sure that the work will be completed well and that the people who come to your house will respect your time. They only hire technicians with licenses and experience!
Cj Pe Benito
Feb 7, 2025
The only company that was able to solve my complicated tankless water heater problem was Superior HVAC. They are obviously very knowledgeable in their industry, and I greatly appreciate their assistance. Even the mess was cleaned up by their technician, Brian.
We will deliver a gas boiler Navien condensing to any of these cities
Nov 28, 2023
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