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
Buy new Boiler Viessmann Heat Only in just a few steps
Make an order
Contact us to buy a new boiler. Our team will guide you every step of the way and help you choose the right model.
Arrival of a technician
Once your order is confirmed, we will promptly visit your location and conduct a thorough inspection, ensuring all necessary details are clear.
Delivery and installation work
We will deliver the boiler to you. Our team will handle the installation with efficiency and professionalism, ensuring a seamless setup.
Get a warranty
We offer a warranty that covers different parts and services. Even after the warranty expires, you can rely on our post-warranty services.
Why should you buy a Boiler Heat Only Navien from us?
9.7/10
215 reviews
4.9/5
183 reviews
Brook Emma
Oct 23, 2023
Cold days, of course, are the days when the furnace fails to work. Superior HVAC Service arrived quickly and got the unit back up and running in no time. We are very grateful for such a wonderful service and fast repairs!
Aries Geoffrey
Oct 23, 2023
The guys did a great job servicing my heat pump. Everything is working even better than I expected and they left my place cleaner than when they arrived. Don't hesitate to call them!
Janice Isabella
Dec 12, 2023
Before the boiler replacement, they left my house cleaner than they expected it to be and the price was competitive as always.
Gabriel Landon
Jan 10, 2024
Just a few highlights of this service they are fast they deal with really complicated problems they can get all the needed spare parts quickly.I highly recommend them. Great team.
Mark Betty
Nov 19, 2023
He was very friendly and we were happy that he came to service our furnace.
Olive Vogt
Nov 28, 2023
Very professional services
Xaviera Isabel
Nov 21, 2023
Kaz has always been on time, professional, and thorough when tuning my furnace. Kaz, thank you!
alexandre tremblay
Jun 21, 2024
Nothing less than an amazing service. Very professional. They repaired my A/C
We will deliver Navien Heat Only Boilers to any of these cities
Oct 23, 2023
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