Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Both the NTI Trinity TFT110 and the NTI Trinity TFT154 belong to the NTI Boilers Trinity TFT (discontinued) line of condensing boilers. Published ratings: NTI Trinity TFT110 at 21.6–108 MBH input, 99 MBH heating capacity and 95% AFUE; NTI Trinity TFT154 at 15.4–154 MBH input, 141 MBH heating capacity and 95% AFUE. NTI Trinity TFT154 lists 46 MBH more input than NTI Trinity TFT110 (154 MBH against 108 MBH). Both list the same published AFUE of 95%.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | NTI Trinity TFT110 | NTI Trinity TFT154 |
|---|---|---|
| Input, minimum | 21.6 MBH | 15.4 MBH |
| Input, maximum | 108 MBH | 154 MBH |
| DOE heating capacity | 99 MBH | 141 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Domestic hot water | Heating-only; pair with an indirect tank or separate water heater | Heating-only; pair with an indirect tank or separate water heater |
| Boiler water content | 3.2 gal | 3.9 gal |
| Water connections | 1" NPT male | 1" NPT male |
| Gas connection | 1/2" NPT male | 1/2" NPT male |
| Fuel | Natural gas or propane | Natural gas or propane |
| Net I=B=R rating | 86 MBH | 122 MBH |
| Vent / air-inlet diameter | 2 or 3 in | 3 in |
| Vent / air-inlet length | 2" or 3" runs up to 100 ft each side; on LP the 2" run is limited to 25 ft on the TFT110 | 3" runs up to 150 ft each side |
| Weight, with water | 110 lb | 160 lb |
| Canada altitude derate | 10% derate at 2,000–4,500 ft | 10% derate at 2,000–4,500 ft |
Published ratings: the NTI Trinity TFT110 is rated 21.6–108 MBH input, 99 MBH heating capacity and 95% AFUE; the NTI Trinity TFT154 is rated 15.4–154 MBH input, 141 MBH heating capacity and 95% AFUE. NTI Trinity TFT154 lists 46 MBH more input than NTI Trinity TFT110 (154 MBH against 108 MBH). Both list the same published AFUE of 95%.
The boiler water content differs: the NTI Trinity TFT110 lists 3.2 gal, while the NTI Trinity TFT154 lists 3.9 gal. The vent / air-inlet diameter differs: the NTI Trinity TFT110 lists 2 or 3 in, while the NTI Trinity TFT154 lists 3 in. The vent / air-inlet length differs: the NTI Trinity TFT110 lists 2" or 3" runs up to 100 ft each side; on LP the 2" run is limited to 25 ft on the TFT110, while the NTI Trinity TFT154 lists 3" runs up to 150 ft each side.
Both records print the same AFUE (95%), domestic-hot-water arrangement (Heating-only; pair with an indirect tank or separate water heater), water connections (1" NPT male) and gas connection (1/2" NPT male), per the cited sources.
NTI Boilers
The NTI Trinity TFT110 is a discontinued wall-hung fire-tube condensing boiler: 21.6–108 MBH input with a 99 MBH heating capacity, a 86 MBH Net I=B=R rating and 95% AFUE per the TFT I&O manual (99984535).
NTI Boilers
The NTI Trinity TFT154 is a discontinued wall-hung fire-tube condensing boiler: 15.4–154 MBH input with a 141 MBH heating capacity, a 122 MBH Net I=B=R rating and 95% AFUE per the TFT I&O manual (99984535).
The NTI Trinity TFT154 lists 154 MBH, against 108 MBH on the NTI Trinity TFT110, per the cited documentation.
Both list the same AFUE of 95%.
A consultation includes a heat-loss review so the size is right the first time.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.