NTI TRX150 BoilerHigh-Efficiency NTI Gas Boiler TRX199C 199,000 BTU/HR
In Stock
Custom Pricing Available
+ Turnkey installation *
Order nowInstallation/replacement covers all necessary materials for operation
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Technical Characteristics of NTI TRX199C Boiler
- Boiler Type
- Combi
- Space Heating Minimum / Maximum Input (Btu/Hr)
- NG 19,700 / 197,000
- Domestic Hot Water Minimum / Maximum Input (Btu/Hr)
- LP 19,200 / 192,000
- Power Source
- Gas
- DOE AFUE (%)
- 95
- Heating capacity
- 184
- Net AHRI Rating
- 160
- DHW Flow Rating (at 77°F rise, gpm)
- 4.8
- Installation type
- Indoor, Wall Hung, Fully Condensing
- Weight (lbs.)
- 135
- Gas connection
- 3/4” Male NPT
- CH connections
- 1 1/4” Male NPT
- DHW connections
- 3/4” Male NPT
- Flue
- Category IV, Sealed Combustion Direct Vent, Power Vent
- Minimum – Maximum Exhaust Vent Run
- 2” (6 – 100 feet)* / 3” (6 – 150 feet)
- Minimum – Maximum Intake Air Pipe Run
- 2” (0 – 100 feet)* / 3” (0 – 150 feet)
- Shipping Weight (lbs)
- 130
- Power Supply
- 120V, 60 Hz, less than 12A
- Application
- Residential
- Features
- Wi-Fi
- Modulating Combustion up to
- 11:1

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NTI TRX199C Boiler Manual
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Boiler NTI TRX199C Reviews
- Olivia Bennett January 27, 2026
(0 reply) - Anthony Garcia October 14, 2025
(0 reply) - Amelia Wong March 1, 2024
(0 reply) - Jack November 11, 2023
(0 reply)
4 of 4 ReviewsWe chose the NTI TRX199C when we were upgrading the mechanical systems in our home, and it has completely changed our experience with heating and hot water. Our previous setup was outdated and required multiple components working together. We wanted something more modern, efficient, and easier to manage. The TRX199C checked all the boxes by combining high-capacity heating and domestic hot water into a single compact unit. The biggest difference we noticed was the consistency. The temperature throughout the house stays much more balanced, and the hot water supply has been excellent for our family’s daily routine. There are no further noticeable drops in temperature when multiple people use water simultaneously. I also appreciate how intelligently this boiler operates. The modulation adjusts output based on demand, allowing the system to run smoothly rather than constantly cycling at full power. The Wi-Fi connectivity is a convenient addition because it gives better visibility into the system and makes managing settings easier. The overall build quality is impressive, and the installation looks much cleaner than our old equipment. After going through a full Canadian winter with the NTI TRX199C, we are extremely satisfied with its comfort, performance, and reliability.
The NTI TRX199C was the perfect solution for our larger home. We needed a powerful system that could handle both heating and hot-water demands without requiring separate equipment. What impressed us most was how quickly the system responds. The house reaches a comfortable temperature faster, and the hot water performance has been excellent even during peak usage times. The combi design saved a lot of space compared to our previous setup, which was a major advantage. The boiler itself feels very well engineered. The stainless steel heat exchanger, quiet operation, and clean wall-mounted installation give it a premium feel. The built-in connectivity is also a nice feature because it makes monitoring the system much easier. The unit has continued to operate smoothly and has delivered the reliability we were hoping for.
I have recommended my boiler to all my friends and family. It is a reliable heating solution that is well worth its money.
The boiler is a godsend for those who appreciate reliability. It works without interruption.