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.
Get the Wall 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
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 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 from us?
9.7/10
215 reviews
4.8/5
reviews
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.
Alison Wonderland
Feb 18, 2025
Sean came to help with our heat pump that was making a ton of noise. He was quick to identify the issue and provide me with the solutions going forward. He also made time to service the furnace which was overdue. Sean was kind, informative, and really helpful. I would definitely recommend using Superior, and going with Sean!
Marius Iordache
Feb 17, 2025
Sean was fantastic! He arrived right on time, quickly diagnosed the issue with our electric furnace, and had it running perfectly in no time. Not only did he fix the problem, but he also took the time to answer all our questions and even taught us proper maintenance to keep it running smoothly. Professional, knowledgeable, and friendly—highly recommend Sean for any HVAC needs!
Lindsay meyer
Dec 07, 2025
Mike fixed my furnace
Alyssa Pauline Ignacio
Jul 08, 2025
Superior HVAC, Heating and Air Conditioning provided top-notch service, with skilled repair work and great communication from their technician, Michael, which has our old boiler running like new.
We will deliver a Wall Boiler to any of these cities
Jul 30, 2025
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