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 Propane High Efficiency Boiler 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 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'll deliver the boiler to your location, and our experienced experts will handle the installation efficiently and professionally.
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 Propane Gas Boiler from us?
9.7/10
215 reviews
4.9/5
1218 reviews
Kasyia Grow
Oct 30, 2026
We switched to a more efficient unit, and our energy use has dropped noticeably. The team handled the paperwork too.
Taylor Hill
Oct 30, 2026
The work was neat and on schedule. The replacement part cost more than I hoped, but the labor was reasonable.
Emily Ross
Oct 27, 2026
They serviced both the heating and cooling systems and explained what each part does. I’d book the yearly checkup again.
Evan Krell
Oct 10, 2026
Very personable guys.will use them again!
Cameron Lovell
Sep 10, 2026
Our tankless heater kept shutting off mid shower. They cleaned the lines, flushed the units and replaced a temperature sensor that had failed. He explained everything in plain language, and didn’t rush the job the membership plan got a same-day service and a serious break on the cost.
TARUN R
Jul 24, 2026
Very respectful technician who explained the repair in terms I could understand. I felt informed throughout the visit
Dan Drakeford
Jul 08, 2026
Great job, fast service, thank you!
Memer's Plaza
Jul 22, 2026
Our AC stopped cooling overnight, and they responded the same day. They replaced a faulty capacitor, and everything has been running perfectly since.
Jessy
Apr 25, 2026
Great company and great service. The AC replacement was done faster than expected, and the team was very respectful of my home. They explained the process clearly and made everything stress-free. My new system works perfectly and cools evenly throughout the house.
Deva
Jun 25, 2026
Superior HVAC fixed an issue with our air conditioner that was blowing warm air. The technician replaced a failed capacitor and the system was cooling properly before he left
Fabrizio Jarman
May 26, 2026
I called this company because our home wasn't cooling evenly and some rooms were much warmer than others. The technician inspected the system thoroughly and identified an airflow issue right away. He fixed the problem quickly and now the entire house feels comfortable again. Great customer service and honest pricing
Diarra Bucher
Jun 21, 2026
I noticed some garden beds were always overwatered while others stayed completely dry, and this company diagnosed leaky irrigation lines right away. After repairing the PVC and rebalancing the sprinkler heads, the entire lawn gets even coverage.
We will deliver a Boiler High Efficiency Propane Gas to any of these cities
Oct 30, 2026
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