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 Luna Duo-tec 1.33GA and 1.48GA are the two smaller heating-only Luna Duo-tec boilers and the step mirrors the combi range: 125 MBH input, 102 lb and a 13.59 in deep cabinet on the 1.33GA against 164 MBH, 125 lb and a 21.5 in deep cabinet on the 1.48GA, both printing 95% AFUE, ENERGY STAR and a 5.5:1 central-heating turndown.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Baxi Luna Duo-tec 1.33GA | Baxi Luna Duo-tec 1.48GA |
|---|---|---|
| Input (as printed) | 125 MBH | 164 MBH |
| Efficiency (as printed) | 95% AFUE | 95% AFUE |
| Turndown (as printed) | 5.5:1 | 5.5:1 |
| Burner / heat exchanger (as printed) | Stainless steel ANSI 316L pre-mixed burner and heat exchanger | Iron-Chromium Stainless Steel Burner and Brazed Plate Heat Exchanger |
| Circulator pump (as printed) | Two-speed modulating pump with built-in air vent | 3 speed, electronically controlled pump |
| Dimensions (as printed, W x D x H) | 17.72"(w) x 13.59"(d) x 30"(h) | 17.75"(w) x 21.5"(d) x 30"(h) |
| Weight (as printed) | 102 lb | 125 lb |
| Vent material (as printed) | Coaxial or two-pipe polypropylene | Coaxial or two-pipe polypropylene |
| Gas type (as printed) | Natural Gas / Propane | Natural Gas / Propane |
Both heating-only boilers print the Luna Duo-tec GA feature set — 95% AFUE, ENERGY STAR certification, THINK combustion management with GAC, 5.5:1 central-heating turndown, coaxial or two-pipe polypropylene venting and Natural Gas / Propane gas type — and neither page carries a discontinued banner.
The 1.33GA is the entry heating model at 125 MBH input in the 102 lb, 17.72 x 13.59 x 30 in cabinet with the ANSI 316L pre-mixed burner and a two-speed pump. The 1.48GA fires to 164 MBH in the deeper 21.5 in, 125 lb cabinet and changes combustion hardware to the Iron-Chromium stainless steel burner with brazed plate heat exchanger and three-speed pump — the same split the combi line shows between the 40GA and 60GA.
The official 1.33GA page also prints closet-install approval. Both platforms are documented on Boilers.ca with the values printed on their own pages; neither is discontinued, so sizing comes down to the heat-loss calculation against the printed input ceiling.
The Baxi Luna Duo-tec 1.33GA is a 125 MBH wall-hung condensing heating boiler on baxiboilers.com — 95% AFUE as printed with a 5.5:1 central-heating turndown — modelled from its official current product page.
The Baxi Luna Duo-tec 1.48GA is a 164 MBH wall-hung condensing heating boiler on baxiboilers.com — 95% AFUE as printed with a 5.5:1 central-heating turndown — modelled from its official current product page.
No — the 1.33GA prints a 17.72 x 13.59 x 30 in cabinet at 102 lb while the 1.48GA prints 17.75 x 21.5 x 30 in at 125 lb.
125 MBH on the Luna Duo-tec 1.33GA and 164 MBH on the Luna Duo-tec 1.48GA, as printed on the page feature bullets.
No — both are heating-only boilers in the 'Heating Boilers' group. Domestic hot water comes from an indirect tank or another appliance on the system.
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.