Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The Compass NC110 and NC150 are both 95% AFUE heating-only floor models on the same platform, and the NC150 lifts the input ceiling from 110 to 150 MBH. The cost is 10 lb (203 lb against 193 lb) and a minimum fire that rises from 11 to 15 MBH; connections, cabinet logic and venting are unchanged.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | NTI Compass NC110 | NTI Compass NC150 |
|---|---|---|
| Input, minimum | 11 MBH | 15 MBH |
| Input, maximum | 110 MBH | 150 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Turndown ratio | up to 10:1 | up to 10:1 |
| Weight | 193 lb | 203 lb |
| Max. equivalent vent length, 2" | 100 ft | 100 ft |
| Max. equivalent vent length, 3" | 150 ft | 150 ft |
| CH water connections | 1 1/4" NPT | 1 1/4" NPT |
| 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 |
Both models share the Compass floor platform — stainless fire-tube heat exchanger, integrated ECM pump, reversible left/right connections — with 1 1/4" NPT CH connections and the same 2" (100 ft) / 3" (150 ft) venting terms at 95% AFUE. The NC110 fires 11 to 110 MBH at 193 lb; the NC150 fires 15 to 150 MBH at 203 lb.
The minimum fire rises from 11 to 15 MBH, a modest change that keeps the 150 practical in mild weather, while its extra 40 MBH of ceiling covers homes whose heat loss plus indirect-tank recovery exceeds the 110's reach.
Both are heating-only, so DHW comes from an indirect tank or separate water heater on either model. The 150 is justified when the heat-loss calculation genuinely exceeds 110 MBH; houses inside that range keep the lighter NC110 and its lower minimum fire.
NTI Boilers
The NTI Compass NC110 is the 95% AFUE floor-standing Compass at 11 to 110 MBH input — the same 193 lb cabinet as the NC085 with 25 MBH more ceiling for detached homes with an indirect tank.
NTI Boilers
The NTI Compass NC150 is the 95% AFUE floor-standing Compass for mid-to-larger homes: 15 to 150 MBH input in a 203 lb floor cabinet with the platform's reversible connections and integrated pump package.
Input rises from 110 to 150 MBH and weight from 193 to 203 lb; AFUE (95%), connections and venting are unchanged.
Yes — 2" runs to 100 ft or 3" runs to 150 ft per side, with no restrictions printed on the Compass page for any size.
When the room-by-room heat-loss calculation plus hot-water recovery demand more than 110 MBH. Below that, the NC110's 11 MBH minimum fire condenses more steadily in mild weather.
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 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.