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
1180 reviews
Jennica Allysa Baul
Jul 24, 2025
Well pump installation done perfectly. Great communication, no delays, and system works flawlessly. Very professional and reliable plumbing crew named Kurtis. Awesome experience with Superior Plumbing and Heating
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!
Дмитрий Иващенко
Feb 5, 2025
Our AC wasn't cooling properly, and we called Superior HVAC Service. Chris arrived promptly, diagnosed a refrigerant leak, and had it repaired quickly and affordably. Great service and a fair price!
Robyn Goodhue
Mar 27, 2025
Conner came out and inspected my boiler, it was an old wiseman boiler and I was worried it wouldn’t be operational anymore and thankfully he came and spoke with me about the repair process— only one 3 way aviator and my boiler is working again, thank you so much Conner!!
John Paulo Santiago
Mar 13, 2025
Very happy with the installation of my furnace. The tech guy named Neil was quick and efficient. My house is now perfectly warm. Outstanding experience with Superior HVAC
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.
We will deliver a boiler Navien condensing to any of these cities
Jul 24, 2025
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