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
4.8/5
reviews
Cye Aliling
Feb 04, 2025
Ian promptly inspected and repaired my furnace on the same day, ensuring it was up and running. I’m very happy with the fast, reliable service!
Justine V
Feb 06, 2025
Ian from Superior HVAC services recently replaced my furnace, and I couldn't be more satisfied with the experience. From the initial inspection to the installation, he was professional, knowledgeable, and efficient. Outstanding work!
Rose Ann Rivera
Mar 13, 2025
Professional and efficient installation for my air handler. The tech guy named Neil was on time and very clean. My new unit is working great. Thank you Superior HVAC
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!
shahed alhalabi
Jan 31, 2025
Really good service
Sinisa Vasic
Aug 08, 2025
Our AC was working but not cooling, so we have engaged Superior Plumbing and Heating for diagnostic and repair. Since replacing some electrical components did not help we agreed to buy and install a new AC. Two days later two technicians showed up with a new AC unit. They worked very efficiently - they dismantled and removed the old AC, and while one of them was working in a furnace room, another one was working on AC unit outside. When installation was completed AC was tested and proved that works well.Technicians behaved politely and professionally. We are very pleased with the job done and we would confidently recommend this company for HVAC service.
GABRIELLE FHUEGO DIZON
Oct 21, 2025
We had a great experience with Superior HVAC, Heating and Air Conditioning. They were able to schedule us quickly, and the technician named Kurtis was very thorough in repairing our water softener. Highly satisfied!
We will deliver a gas boiler Navien condensing to any of these cities
Feb 04, 2025
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