NTI Trinity Lx150-800
Model Number: Lx150-800
Trinity Lx is an NTI condensing boiler family used on larger hydronic loads.
Technical Specifications
Source: manufacturer product data
Prices depend on sizing, venting and piping in your home, so we quote every installation.
Sizing: the right size comes from a room-by-room heat-loss calculation, not the size of the old boiler or a rule of thumb. Oversized boilers short-cycle and waste fuel; steam systems are sized to the connected radiation instead. See how we approach boiler installation.
Home-Specific Operating Cost Review
No guaranteed annual savings or payback period
Historical Use
Fuel consumption and weather
Current Rates
Utility and delivered-fuel prices
System Design
Load, piping, controls, and temperatures
Full Specifications
- Model Number
- Lx150-800
- Efficiency (AFUE)
- 95%
- Boiler Type
- Condensing Boiler
- Fuel
- natural gas/propane
- Venting
- PVC/CPVC/PP/SS
- BTU Input Range
- 30k - 800k BTU
- Domestic Hot Water
- indirect-ready
- In Production
- Yes
- Parts Warranty
- 1 year
- Heat Exchanger Warranty
- 12 years
Specifications sourced from the manufacturer product data.
Ideal For
Larger buildings with an existing Trinity Lx
Expert Review: NTI Trinity Lx150-800
Trinity Lx is an NTI condensing boiler family used on larger hydronic loads.
The earlier NY Thermal product and specification URLs no longer resolve for this Lx150–800 grouping. Listed input range: 30–800 MBH input. Rated efficiency on file: 95% (confirm the rating method for the exact size on the spec sheet). Venting on file: PVC/CPVC/PP/SS. Warranty on file: heat exchanger 12 years; parts 1 year. Can supply domestic hot water through an indirect tank.
It is best suited to larger buildings with an existing Trinity Lx. Before ordering, a contractor should complete a room-by-room heat-loss calculation, check the distribution system's water temperatures and confirm venting and clearances against the installation manual.
Pros: Condensing design captures heat from flue gases when return water is cool enough. Modulating burners can match output more closely to mild-weather loads. Can be paired with an indirect water heater for high-volume hot water. Multiple sizes (30–800 MBH input) allow sizing to a calculated heat loss. Considerations: A family-wide residential AFUE or warranty should not be assumed for every commercial size; request a model-specific submittal. Condensing efficiency depends on low return-water temperatures; high-temperature radiation may limit real-world savings. Requires a condensate drain and, in many homes, neutralization, plus manufacturer-approved vent materials. Some details on this page still await manufacturer verification; check the spec sheet before relying on them.
Key Features & Technology
The earlier NY Thermal product and specification URLs no longer resolve for this Lx150–800 grouping.
Listed input range: 30–800 MBH input.
Rated efficiency on file: 95% (confirm the rating method for the exact size on the spec sheet).
Venting on file: PVC/CPVC/PP/SS.
Warranty on file: heat exchanger 12 years; parts 1 year.
Can supply domestic hot water through an indirect tank.
Advantages
- Condensing design captures heat from flue gases when return water is cool enough.
- Modulating burners can match output more closely to mild-weather loads.
- Can be paired with an indirect water heater for high-volume hot water.
- Multiple sizes (30–800 MBH input) allow sizing to a calculated heat loss.
Considerations
- A family-wide residential AFUE or warranty should not be assumed for every commercial size; request a model-specific submittal.
- Condensing efficiency depends on low return-water temperatures; high-temperature radiation may limit real-world savings.
- Requires a condensate drain and, in many homes, neutralization, plus manufacturer-approved vent materials.
- Some details on this page still await manufacturer verification; check the spec sheet before relying on them.
Sizing & Installation Notes
Condensing boilers like the Trinity Lx150-800 reach their rated efficiency only when return water runs cool enough to condense flue gases. We check your radiation and design water temperatures so the unit actually condenses in your home, not just on the spec sheet.
Every NTI Boilers installation starts with a free in-home assessment covering the heat-loss calculation, venting and chimney condition, gas or oil supply sizing, and permit requirements for your town. Learn more about our boiler installation process, or see current rebate and incentive programs that may apply.
Warranty & Protection
Parts Warranty
1 year
Heat Exchanger
12 years
Our Guarantee
100% Satisfaction
All NTI Boilers boiler installations by Home+ Air & Heat include our 1-year workmanship warranty, covering labor and any installation-related issues.
Compare the NTI Boilers Lineup
| Model | Efficiency | BTU Range | Fuel | Heat Exchanger Warranty |
|---|---|---|---|---|
| Trinity Lx150-800 (this model) | 95% AFUE | 30k - 800k BTU | natural gas/propane | 12 years |
| TX Series | 95% AFUE | 50k - 199k BTU | natural gas/propane | Limited lifetime |
| TRX085-199 | 95% AFUE | 20k - 199k BTU | natural gas/propane | 12 years |
| FTVN085-199 | 95% AFUE | 20k - 199k BTU | natural gas/propane | 12 years |
| Vmax110P/153P | 95% AFUE | 20k - 153k BTU | natural gas/propane | 12 years |
| Trinity TFT60-399 | 95% AFUE | 15k - 399k BTU | natural gas/propane | 12 years |
See the full NTI Boilers brand page for lineup context, or browse the Best Condensing Boilers guide to compare across brands.
Frequently Asked Questions
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