Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The IBC SFC 199-1 and NTI Trinity TRX199C are both 95% AFUE combis whose DHW side reaches roughly 199 MBH, but their heating sides are not equal: IBC caps space heating at 125 MBH input while NTI allows 197 MBH (192 on propane). IBC counters with a 5.0 GPM continuous DHW rating at a 67°F rise and 84 lb weight; NTI lists 4.8 GPM at 77°F and weighs 135 lb. Heat-loss first, then DHW.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | IBC SFC 199-1 Superflow | NTI Trinity TRX199C |
|---|---|---|
| Heating input, minimum | 28.5 MBH | 19.7 MBH |
| Heating input, maximum | 125 MBH | 197 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Fuel | Natural gas or propane | Natural gas or propane |
| Weight (empty) | 84 lb | 135 lb |
| Max. equivalent vent length, 2" | 65 ft | 100 ft |
| Max. equivalent vent length, 3" | 120 ft | 150 ft |
| Heating water connections | 1" NPT | 1 1/4" NPT |
| DHW connections | 3/4" NPT | 3/4" NPT |
| Gas connection | 3/4" NPT | 3/4" NPT |
| Domestic hot water | Integrated coil in the main heat exchanger (combi); built-in bypass valve to steady DHW temperatures | Integrated combi (DHW plate) in the appliance |
Both boilers carry a 95% AFUE rating, natural-gas-or-propane operation and a DHW input that reaches the 199 MBH class, but the heating-side story diverges. IBC publishes the SFC 199-1 with space-heating input of 28.5 to 125 MBH (its DHW input is 199 MBH), while NTI lists the TRX199C at 19.7 to 197 MBH on natural gas and 19.2 to 192 MBH on propane — roughly 70 MBH more heating capacity for large homes that still want one appliance.
The DHW ratings trade places depending on basis: IBC publishes 5.0 GPM continuous at a 67°F rise with a 7 GPM maximum DHW flow, while NTI publishes 4.8 GPM continuous at a 77°F rise. The IBC figures are the higher-flow claim, but the two makers use different rise assumptions, and neither figure replaces a fixture-by-fixture hot-water demand check.
Physically the SFC 199-1 is the lighter unit at 84 lb (38 kg) with 1" heating connections and 65 feet of 2" or 120 feet of 3" venting per side, while the TRX199C weighs 135 lb, steps up to 1 1/4" NPT heating connections, and vents 2" to 100 feet or 3" to 150 feet per side (its 2" terms follow an NTI technical bulletin). Both need gas supply sized for the DHW draw, and both are chosen from a heat-loss calculation plus hot-water demand.
IBC Technologies
The IBC SFC 199-1 is the largest Superflow combi: 95% AFUE, up to 125 MBH for space heating and 199 MBH for hot water, 5 GPM continuous DHW at a 67°F rise, with wireless cascade of up to eight units on the SFC 199-1.
NTI Boilers
The NTI Trinity TRX199C is the flagship TRX combi: space heating at 19.7 to 197 MBH (LP 19.2 to 192 MBH) with 4.8 GPM continuous DHW at a 77°F rise, rated 95% AFUE at 135 lb with 1 1/4" NPT CH connections.
The NTI TRX199C heats to 197 MBH on natural gas versus 125 MBH for the IBC SFC 199-1, so homes with heating loads above 125 MBH need the NTI or a different arrangement.
IBC lists 5.0 GPM continuous at a 67°F rise and NTI lists 4.8 GPM continuous at a 77°F rise, so the comparison depends on the rise basis each maker publishes.
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 8, 2026. Last updated September 8, 2026. Technical reviewer: not yet assigned.