Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions.
2" venting up to 65' (including schedule 40 PVC).Vent Installation Detector (VID) for added safety.
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.
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 High-Efficiency 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
We will deliver the boiler to you. Our team will handle the installation with efficiency and professionalism, ensuring a seamless setup.
Get a warranty
You receive a warranty that covers various components and services, and when it ends, you can count on our post-warranty services.
Why should you buy a High Efficiency Boiler Navien from us?
9.7/10
215 reviews
4.8/5
0 reviews
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.
Ishdeep
Feb 10, 2025
I noticed my boiler wasn’t heating properly, so I reached out to Superior HVAC Service. Ian came by, quickly diagnosed the issue, and had it fixed in no time. He also made sure my tankless water heater was working efficiently before he left. Great service—super professional and knowledgeable!
Daryll Angel Andrada
Feb 6, 2025
Ian did an excellent job identifying and replacing the gas valve on my water heater. He walked me through the entire process, and the pricing was very fair for the quality of work. Great service from superior hvac services!
Black Wood
Dec 12, 2023
It deserves more than a 5-star review! Not only they replace my old gas water heater with a new electric one, but they also professionally upgraded my old electric one.
Carl Antivola
Feb 8, 2025
I was having trouble keeping my house warm, so I called Superior HVAC Service. Ian arrived right on schedule, quickly figured out the issue, and had everything fixed before I knew it. He even checked my water heater to ensure it was working well. Great service—definitely recommend!
We will deliver a Navien Boiler High Efficiency to any of these cities
Mar 8, 2025
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