Baxi Boilers

The right model and the right output for your home.

Luna Duo-tec 40GA

A high efficiency modulating condensing combi wall-mounted boiler with built-in safety & performance enhancing components.


  • 125 MBH Input
  • 95% AFUE
  • ENERGY STAR® Certified
  • THINK combustion management system
  • GAC (gas adaptive control)
  • 7:1 Turndown modulation ratio in DHW mode
  • 5.5:1 Turndown modulation ratio in central heating mode
  • Two-speed modulating pump with built-in air vent
  • Stainless steel ANSI 316L pre-mixed burner and heat exchanger
  • Enhanced stainless steel secondary heat exchanger delivers domestic hot water
  • Domestic hot water flow rates 3.9 GPM @ 70° F temperature rise
  • Equipped with the pre-heating function of the exchanger which guarantees the immediate production of domestic hot water at the set comfort temperature
  • Electronic Ignition
  • Freeze Protection Safety Device
  • Vent Material; coaxial or two-pipe polypropylene
  • Approved for closet installation, saving valuable living space
  • Gas Type: Natural Gas / Propane
  • Dimensions: 17.72"(w) x 13.59"(d) x 30"(h)
  • Weight: 102lbs