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
246 reviews
Adam Thompson
Oct 24, 2023
On a cold winter day, my furnace died of old age. I happened to stumble upon Superior HVAC Service and the next morning, a technician was at my place! The level of professionalism from the first call to the final cleanup was impeccable. I’m very pleased with the furnace installation experience I’ve had!
Blake Raglan
Oct 25, 2023
Excellent! My water heater is functioning again. Accurate and efficient repair staff. If I ever needed something done immediately, I could always count on you to get it done right!
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.
Charles James
Dec 12, 2023
This is a great company.I hired their tech for work yesterday and regretted not doing so before.
Leopold Shepard
Dec 29, 2023
Had an excellent experience with Superior HVAC Service! Conner and Matt were incredibly responsive and helped us swiftly replace our commercial furnace. We plan to be long-term customers!
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.
We will deliver Navien Heat Only Boilers to any of these cities
Oct 24, 2023
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