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
5/5
220 reviews
Dominic & Bittu Joseph
Oct 7, 2023
Jeremy is came to look at our water heater which is leaking and have no hot water . He gave us options and solutions to move forward.
Wild Nathan
Oct 26, 2023
Superior HVAC Service was a huge help with our furnace installation. We had no worries throughout any stage of the process, from first contact to final setup. The guys knew what they were doing and did a great job. Thanks!
Kimberley Clara
Nov 2, 2023
I was impressed with the gas boiler repair they carried out and can recommend their services without any hesitation. Top-notch work and absolute expertise, backed by a warranty!
Jared Tommy
Oct 24, 2023
They have helped me countless times! The last time I hired them for heat pump installation and didn't regret it again. While I was away, I didn't worry about my home because I knew it was fine and the unit has been working flawlessly by now. Thank you!
Carlos Hooks
Dec 12, 2023
Highly recommanded...
We will deliver a gas boiler Navien condensing to any of these cities
Oct 7, 2023
Ajax