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.
Get the 175 000 BTU Navien Boiler 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 Navien 175 000 BTU from us?
9.7/10
215 reviews
4.9/5
1201 reviews
Bad Benny
Feb 8, 2025
Superior HVAC is truly superior! George replaced our outdated boiler with a modern, energy-efficient model. The installation was flawless!
Malak Kharnoub
Jan 31, 2025
Excellent HVAC Service!Our furnace stopped working in the middle of a cold snap, so we called Superior HVAC Service. Michael showed up right on time, diagnosed the issue, and fixed it quickly. He also took the time to explain how to maintain the system to avoid future problems. Highly impressed with the level of service—definitely recommend!
Marian Bagui
Feb 4, 2025
I had my water heater’s gas valve replaced, and the experience was great! Ian was skilled, efficient, and got the job done quickly. Everything is working perfectly now, and the service was both reliable and reasonably priced. I would definitely recommend them for any water heater repairs!
Cj Pe Benito
Feb 7, 2025
The only company that was able to solve my complicated tankless water heater problem was Superior HVAC. They are obviously very knowledgeable in their industry, and I greatly appreciate their assistance. Even the mess was cleaned up by their technician, Brian.
Lover ofcars
Jan 31, 2025
Woke up to no hot water and immediately called Superior HVAC Service. Hunter arrived on time, quickly diagnosed the issue with my tankless water heater, and had it working again in no time. He even did a quick check on my furnace to make sure everything was running smoothly. I really appreciated his professionalism and attention to detail!
Brody Doerr
Mar 27, 2025
Every Spring I like to test out my AC system to make sure all headaches are avoided before the busy season this year it would not start… I called superior HVAc out they had Conner at my door with in 2 hrs. He tested my system for about an hour and found a coolant leak after a recharge of my system my Air Conditioner started working again!!! Highly recommend honest guy ask for Conner
aracely cervantes
Feb 7, 2025
Ian was incredibly thorough in his work. He diagnosed our air handler issue precisely and ensured everything was working before he left!
Michelle Williams
Mar 11, 2025
Quick,reliable quality service highly recommend!
We will deliver Navien 175 000 BTU Boilers to any of these cities
Feb 8, 2025
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