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.
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 High-Efficiency 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
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 High Efficiency Boiler from us?
9.7/10
215 reviews
5/5
1272 reviews
John Hoover
Nov 27, 2024
technician phoned to say he was on his way, very prompt and courteous, did a quick but thorough diagnios. no compliants
Aunice Torres
Nov 01, 2025
Superior HVAC Heating and AirConditioningrepaired my furnace quickly and accurately. Friendly and skilled technician named Sean who made sure everything was perfect. Great company to call for HVAC repairs and maintenance.
Khadidja Humad
Jan 31, 2025
Professional and FastWe’ve been having issues with our thermostat, so I called Superior HVAC Service. Liam arrived on time, diagnosed the problem right away, and had it fixed in under an hour. He was professional, friendly, and even took a moment to check the entire system to make sure everything was in working order. Highly recommend!
Macy Mirka
Jul 29, 2025
Would highly recommend! Our AC broke in the heat wave and they were super quick to come check it out and were able to fix it next day :)
Braujiemin R. Evangelista
Jul 16, 2025
The air conditioner is working properly again thanks to Jemmar, a technician from Superior HVAC, Heating and Air Conditioning, who was efficient, tidy, and provided clear explanations – highly recommended.
Jesse Dhaliwal
Jul 02, 2025
Kurtis did an absolutely amazing job with my water heater. From start to finish, he was professional, knowledgeable, and took the time to explain everything in detail. He quickly diagnosed the issue, walked me through the options, and made sure the work was done properly and safely. You can tell he takes pride in his work and genuinely cares about doing things the right way. The whole process was smooth, stress-free, and I’m extremely happy with the results. I wouldn’t hesitate to recommend Kurtis to anyone looking for reliable, honest service.
Isaak Peters
Nov 05, 2025
Service technician showed up quickly, was polite and knowledgeable. Overall I had a good experience with them.
We will deliver a Boiler High Efficiency to any of these cities
Nov 27, 2024
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