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 Navienās innovative heat exchanger design is ASMEāCertified,āHā 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 Navienās innovative heat exchanger design is ASMEāCertified,āHā 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'; 3ā up to 150ā (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 Navien High-Efficiency Boiler in just a few steps
Make an order
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
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 Navien from us?
9.7/10
215 reviews
5/5
1238 reviews
Rose Ann Rivera
Mar 13, 2025
Professional and efficient installation for my air handler. The tech guy named Neil was on time and very clean. My new unit is working great. Thank you Superior HVAC
Kristen Ervin
Aug 20, 2025
Tyler was very friendly and helpful. He diagnosed the problem with the condensation pump quickly and resolved it. Great service overall
Francesca De Mesa
Jul 07, 2025
Tankless water heater issue resolved in no time. Continuous hot water again. Great service, very knowledgeable tech guy named Daniel. Thank you Superior HVAC, Heating and Air Conditioning
Victoria Jordan
Dec 29, 2023
I want to express my very positive feedback about Superior HVAC Service. They installed a new furnace, air conditioner and water heater. I've never regretted choosing Superior HVAC Service because they respond promptly to my calls and their personalized service is truly valuable. I often recommend them to others.
Jesse Dhaliwal
Jul 02, 2025
Kurtis did an absolutely amazing job with my water heater. From start to finish, he was professional, knowledgeable, and took the time to explain everything in detail. He quickly diagnosed the issue, walked me through the options, and made sure the work was done properly and safely. You can tell he takes pride in his work and genuinely cares about doing things the right way. The whole process was smooth, stress-free, and Iām extremely happy with the results. I wouldnāt hesitate to recommend Kurtis to anyone looking for reliable, honest service.
SOPHIE PRODHOM
Jan 29, 2025
I recently had a new water heater installed by Superior HVAC, and Brian handled the entire installation process. He also inspected my boiler for any potential issues. Iām very satisfied with their new unit installation service and would use them again.
Hansel Dedicatoria
Oct 19, 2025
Quick thermostat repair! The tech Tyler was knowledgeable and courteous. Our homeās comfort is backā excellent repair service Superior HVAC Heating and Air Conditioning š
We will deliver a Navien Boiler High Efficiency to any of these cities
Mar 13, 2025
Ajax