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
Get the Residential Boiler Navien 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 Navien Residential Boilers from us?
9.7/10
215 reviews
5/5
1183 reviews
Jone Okie
Nov 01, 2025
The tankless water heater installation by Superior HVAC Heating and AirConditioning was quick, clean, and professional. The tech guy named Tyler was friendly and explained everything thoroughly. I highly recommend their service and expertise.
Jarek Walter
Feb 28, 2026
We had a problem with our furnace. I placed a phone call to Superior. To my total surprise, technicians arrived to my place within two hours. They were friendly, profesional and diagnosed the problem.Highly recommend their service.
Girish Vaidhya
Dec 24, 2025
Justin came and diagnosed my 15 year old furnace. The care was awesome and explained the new features that my furnace has! Thank you!
jey trimble
Dec 17, 2025
My furnace stopped working on a very cold day, superior hvac was super quick to send out Ryan,who was super friendly and knowledgeable. He quickly diagnosed the problem and was able to have it repaired and running same day !
Raquel January
Mar 14, 2026
If you want to remove negative reviews from your Google Business, contact me via my profile; my contact details are listed there. After work you can pay..
Mary Lambert
Mar 14, 2026
If you want to remove negative reviews from your Google Business, contact me via my profile; my contact details are listed there. After work you can pay..
We will deliver Residential Navien Boiler to any of these cities
Nov 01, 2025
Ajax