Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Moving from the Luna Duo-tec 1.48GA to the 1.70MP adds 76 MBH of input ceiling (240 MBH versus 164 MBH) and moves to the MP platform: a 95% AFUE wall-hung boiler for 'large residential and light commercial applications' whose page prints a 6.7:1 turndown (as a 'CHW mode' ratio), anti-wind and flame-stabilization functions, a 120.15 lb cabinet 23 in deep, and no THINK/GAC copy.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Baxi Luna Duo-tec 1.48GA | Baxi Luna Duo-tec 1.70MP |
|---|---|---|
| Input (as printed) | 164 MBH | 240 MBH |
| Efficiency (as printed) | 95% AFUE | 95% AFUE |
| Turndown (as printed) | 5.5:1 | 6.7:1 |
| Burner / heat exchanger (as printed) | Iron-Chromium Stainless Steel Burner and Brazed Plate Heat Exchanger | Stainless steel ANSI 316L pre-mixed burner and heat exchanger |
| Circulator pump (as printed) | 3 speed, electronically controlled pump | Two-speed modulating pump with built-in air vent |
| Dimensions (as printed, W x D x H) | 17.75"(w) x 21.5"(d) x 30"(h) | 17.75"(w) x 23"(d) x 30.06"(h) |
| Weight (as printed) | 125 lb | 120.15 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 |
The 1.48GA and 1.70MP sit adjacent in the 'Heating Boilers' group of baxiboilers.com's live category: 164 MBH against 240 MBH input, both printing 95% AFUE and ENERGY STAR certification, vented in coaxial or two-pipe polypropylene and gas-rated Natural Gas / Propane. Neither page carries a discontinued banner.
The MP platform differs in its printed feature set: the 1.70MP page keeps the ANSI 316L pre-mixed burner but prints a 6.7:1 turndown bullet (the page writes 'CHW mode' — kept as printed), anti-wind function, flame stabilization and a two-speed modulating pump, and omits the GA pages' THINK/GAC and pre-heating copy. Its page copy positions it for large residential and light commercial applications.
The cabinet grows from the 1.48GA's 17.75 x 21.5 x 30 in at 125 lb to 17.75 x 23 x 30.06 in at 120.15 lb on the 1.70MP. The choice between them follows the heat-loss calculation: the MP's extra 76 MBH only earns its place when the load needs it.
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.
The Baxi Luna Duo-tec 1.70MP is a 240 MBH wall-hung condensing heating boiler on baxiboilers.com — 95% AFUE as printed with a 6.7:1 central-heating turndown — modelled from its official current product page.
76 MBH of input ceiling (240 versus 164 MBH), anti-wind and flame-stabilization functions, and a turndown printed as 6.7:1 in the page's 'CHW mode' wording.
Close but not identical: the 1.70MP prints 17.75 x 23 x 30.06 in at 120.15 lb against the 1.48GA's 17.75 x 21.5 x 30 in at 125 lb.
Baxi North America does not decode the suffix on the product page; the MP models are the larger pair positioned for large residential and light commercial applications. Boilers.ca records the codes as printed.
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.