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 Boiler in just a few steps
Make an order
Order your new boiler today by contacting us. Our dedicated customer support team will assist 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'll deliver the boiler to your location, and our experienced experts will handle 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 Boiler Navien from us?
9.7/10
215 reviews
4.9/5
1200 reviews
amira de silva
Jul 16, 2025
Water softener repair saved us from hard water headaches. Smooth process from start to finish. Efficient tech guy named Daniel. Thank you Superior HVAC, Heating and Air Conditioning
Аня Кузьмина
Feb 4, 2025
My boiler wasn't heating up properly, so I contacted the excellent ventilation and air conditioning service. Cole arrived quickly, diagnosed the problem, and fixed it as soon as possible. He also quickly inspected my oven to make sure everything was working smoothly. The service was professional, thorough and highly appreciated!
женя Шишкин
Feb 3, 2025
My water heater suddenly stopped working so I called Superior HVAC Service. Alvin arrived right on time, fixed it quickly and did a great job. He also checked my heater to make sure everything was working smoothly. The whole job was flawless and I would definitely use them again!
Beachpanda18
Feb 8, 2025
Nice service from Cole, he made installed a new thermostat for us and the process was free-stress
Lycka Badana
Mar 13, 2025
Professional boiler repair. Technician named Tyler was thorough and found the problem quickly. Boiler is working like new. Great service Superior HVAC
Marie Kris Torres
Jul 16, 2025
Blazing hot day and my AC quit—tech guy named Drew arrived quickly, diagnosed the issue, and had it cooling again in no time. Lifesaver Superior HVAC, Heating and Air Conditioning
We will deliver a boiler Navien condensing to any of these cities
Jul 16, 2025
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