Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
Boilers.ca is a brand of ROMA Heating & Cooling · Licensed gas contractor LGA0202903
Comparison
Verdict in brief
The UFT-120W and UFT-140W are twins inside the same compact 17.5 x 34 x 15.4 in wall cabinet: both weigh 100 lb, fire down to 12,000–14,000 BTU/hr and share every venting and connection detail. The 140 adds 20 MBH of ceiling (133 versus 114 MBH heating capacity) but its printed DOE AFUE, 95.0%, is the lowest in the UFT line.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | HTP UFT-120W | HTP UFT-140W |
|---|---|---|
| Input rate, minimum (natural gas) | 12 MBH | 14 MBH |
| Input rate, maximum (natural gas) | 120 MBH | 140 MBH |
| DOE AFUE | 95.6 % | 95 % |
| Heating capacity | 114 MBH | 133 MBH |
| Turndown | 10:1 | 10:1 |
| Venting | 2" to 50 ft or 3" to 100 ft, combined equivalent feet | 2" to 50 ft or 3" to 100 ft, combined equivalent feet |
| Weight, wall-mount model | 100 lb | 100 lb |
| Dimensions, wall model (W x H x D) | 17.5" x 34" x 15.4" | 17.5" x 34" x 15.4" |
The 120 and 140 sizes sit in the same compact UFT wall group — 100 lb each in the 17.5 x 34 x 15.4 in cabinet with identical floor-sibling weights (130 lb for UFT-120F and UFT-140F), identical 2"-to-50 ft / 3"-to-100 ft venting and identical 1-1/4" NPT connections.
Input runs 12,000–120,000 BTU/hr on the 120 and 14,000–140,000 BTU/hr on the 140, lifting heating capacity from 114 to 133 MBH. The printed DOE AFUE falls from 95.6% (the group's best) to 95.0% (the UFT line's lowest) at the 140 size.
Below the 120's ceiling the two behave nearly identically in day-to-day operation, so the 140 is justified only by a design-day heat loss that the 114 MBH heating capacity cannot carry. Everything else — warranty, pressures, venting, gas supply — is common to both records.
HTP
The HTP UFT-120W is the 120 MBH class wall-mounted model of HTP's Universal Fire Tube (UFT) medium-mass condensing boiler line: 12 to 120 MBH natural-gas input, 95.6% DOE AFUE and 114 MBH heating capacity in a 100 lb wall cabinet.
HTP
The HTP UFT-140W is the 140 MBH class wall-mounted model of HTP's Universal Fire Tube (UFT) medium-mass condensing boiler line: 14 to 140 MBH natural-gas input, 95% DOE AFUE and 133 MBH heating capacity in a 100 lb wall cabinet.
No — both are the compact 100 lb wall cabinet at 17.5 x 34 x 15.4 in. The difference is entirely in the firing range.
The official model table prints 95.0% DOE AFUE for the 140 against 95.6% for the 120 — a per-model published figure, not a trend Boilers.ca generalizes.
Size from the heat-loss calculation: below roughly 120 MBH the 120 delivers the group's highest printed efficiency, and the 140's extra ceiling only matters when the load needs it.
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.