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
Contact us to start the process of purchasing a new boiler. Our customer support team will guide 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 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 Gas Boiler Only Heating from us?
9.7/10
215 reviews
5/5
1274 reviews
Josepeh James
Sep 20, 2023
Last week I needed an air conditioner repaired and I was lucky to bump into Superior HVAC Service. They are honest, hardworking guys. The prices were reasonable, and they were very responsible about leaving my house as clean as they found it. You will not be disappointed!
Sarah B
Mar 21, 2025
Excellent repair for my under sink repipe. The plumber named Kurtis was on time, explained everything, and left no mess. My sink drains perfectly now. Will use again Superior Plumbing and Heating.
Lycka Badana
Mar 13, 2025
Professional boiler repair. Technician named Tyler was thorough and found the problem quickly. Boiler is working like new. Great service Superior HVAC
Ariadna Noriega
Nov 02, 2024
He was very kind and professional
Nestor Sales. Florece Jr
Feb 05, 2025
Their technician named Kurtis even diagnosed my thermostat issue within minutes and repaired it efficiently. Very professional and knowledgeable! Awesome Superior HVAC Services!
Alexandra Lei
Oct 20, 2025
Efficient water heater fix! On time, transparent pricing, and super friendly tech named Drew. Thank you for restoring hot water! Superior HVAC, Heating and Air Conditioning
We will deliver Heat Only Gas Boilers to any of these cities
Sep 20, 2023
Ajax