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 Natural gas Boiler Navien 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
We'll deliver the boiler to your location, and our experienced experts will handle the installation efficiently and professionally.
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 Natural gas Navien from us?
9.7/10
215 reviews
4.8/5
reviews
Max's
Oct 31, 2025
I scheduled water boiler maintenance with Superior HVAC, and it was excellent. The technician named Farid was thorough, professional, and explained everything clearly. I’m confident my heater will last longer now.
Lidia Washinton
Feb 19, 2026
I had Superior HVAC Service, Heating & Air Conditioningreplace my furnace last week and couldn't be happier. The quote was fair, and they didn't try to upsell me on anything I didn't need. The technicians were skilled and had the job done in just a few hours. My house has never felt warmer!
Payton Forde
Jan 24, 2026
Had a problem with our family furnace. Superior HVAC was able to fix our problem the same day. I will definitely use this company thank!
Brooklynn Legg
Jan 19, 2026
Superior HVAC was able to replace my 15 year old furnace. The whole process was very quick and professional!
Bob Jonas
Feb 16, 2026
Superior HVAC was able to replace my 15 year old furnace that died in the middle of winter. This company responded quickly and was able to save my family from the freezing cold this winter. Definitely my go to from now on!!
Roshan Tiwari
Feb 03, 2026
I called Superior HVAC North York for a furnace problem during cold weather, and the service was excellent. The technician arrived on time, identified a faulty part, and completed the repair efficiently. Professional service and fair pricing.
We will deliver Boilers Natural gas Navien to any of these cities
Oct 31, 2025
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