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
Integrated ECM pump and DHW diverter valve on all models
Small zone valve systems may not require an additional pump or a low loss header
Get the Condensing Boiler Gas 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
Once the order is confirmed, our skilled technician will promptly arrive at your property to conduct an inspection and clarify any 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
Our warranty covers various parts and services, and even after its expiration, we provide reliable post-warranty services.
Why should you buy a Natural Gas Condensing Boiler from us?
9.7/10
215 reviews
4.9/5
246 reviews
Nehemiah William
Nov 1, 2023
They were very reasonable with their pricing and answered my call quickly. My tankless water heater was up and running on the same day. Thank you for the prompt repair! We will be using Superior HVAC Service for our future plumbing needs!
Carlos Luna
Jan 4, 2024
When my furnace stopped working, Superior HVAC Service promptly came to my rescue. They installed a new furnace the next day, showing their reliability and professionalism. They did a fantastic job, and I highly recommend this company.
Yvonne Byrd
Dec 29, 2023
Matt, our installer from Superior HVAC Service, was professional, conscientious, friendly, and knowledgeable during the installation. This isn't the first time we've worked with them, and their consistent quality work and punctuality make them a preferred choice. Every employee we've interacted with has been great.
Erin Sovar
Jun 19, 2024
After coming home to a wet floor and leaking hot water tank we called Superior and Kurtis was here within 1/2 hour. Unfortunately we needed a replacement but fortunately they could be here the next day. The next day the guys showed up and had us up and running in just over an hour.We will definitely keep these guys on our speed dial
Tahir Pasha
Jun 24, 2024
I had great experience with this company . My water heater gave up over weekendIan technician washelpful and came over and ran diagnostic and fixed heater and advise to get new one as my water heater is at end of lifeHighly recommended professional and courteous
We will deliver a boiler condensing gas to any of these cities
Nov 1, 2023
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