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
220 reviews
Lynd George
Oct 25, 2023
These guys are total pros! One thing I appreciate about this team is the way to get the old unit out and the new unit in without destroying anything. Very careful and proficient. The best HVAC company in the area!
Mark Andy
Dec 12, 2023
The technician came to our house immediately after the call, diagnosed the unit and scheduled the repair by the end of the day. This was a very timely post.
Maverick Micah
Jan 10, 2024
We heard some strange noises from the water heater. So we contacted this service for an experienced guy to take a look at it. And they sent us a great professional! He found the root of the problem was the clogged burner. So, he removed all the sediment from there and that was it.Good and effective job, well done, plus not expensive at all.
Musavir
Jan 5, 2024
I received three quotes from different companies to replace my 16-year-old air conditioner/heater. I chose Superior HVAC Service because of their price and the fact that they demonstrated the most knowledge. Instead of pushing for the most expensive air conditioner, they identified existing installation issues that others had overlooked. The installation team completed the work on time, even solving problems with outdated exhaust ducts connected to my water heater.
Jamie Johnson
Dec 10, 2023
The technician arrived on schedule, quickly diagnosing and resolving the problem with our water heater.
We will deliver a Boiler High Efficiency to any of these cities
Oct 25, 2023
Ajax