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 Wall Boiler Navien in just a few steps
Make an order
Contact us to buy a new boiler. Our team will guide you every step of the way and help you choose the right model.
Arrival of a technician
Once your order is confirmed, we will promptly visit your location and conduct a thorough inspection, ensuring all necessary details are clear.
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 Boiler Wall Navien from us?
9.7/10
215 reviews
5/5
1272 reviews
Joanna Rizelle Moreno
Jul 16, 2025
Soft water restored! Water softener repair was quick and easy with their tech guy Daniel. Highly recommend their service. Thank you Superior HVAC, Heating and Air Conditioning
Arts Kyl
Oct 31, 2025
Superior HVAC Heating and AirConditioning fixed my thermostat swiftly and professionally. Friendly tech named Sean, clear explanations, and efficient repair. My heating system is now fully reliable. I highly recommend them for HVAC needs.
milan torak
Oct 31, 2025
Maintenance on my tankless water heater went perfectly with Superior HVAC Heating and AirConditioning. The technician named Sean was thorough and ensured the system worked optimally. Excellent customer service and professionalism.
Mark Paul Ampusta
Feb 20, 2025
Installation for my furnace was quick and seamless. Their technician named Cole paid attention to every detail, ensuring a perfect fit. Great customer service and a stress-free experience. Awesome Superior HVAC!
Sheldy Palacio
Feb 10, 2025
The installation went smoothly, and the furnace works great. Overall, a great experience with Superior HVAC. Their technician guy named William was nice as well even cleaned up the mess.
teddy mendoza
Oct 20, 2025
Excellent service from Chandler at Superior HVAC, Heating and Air Conditioning. He explained the issue clearly and repaired our water heater with expertise. We appreciate the prompt response!"
Jenn Sheppard
Nov 04, 2025
Daniel was professional and polite and very helpful.Would recommend
We will deliver a Wall Boiler Navien to any of these cities
Jul 16, 2025
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