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FTA Fire Tube Boiler

FTA Outdoor Model
Outdoor w-proof casing.jpg

AIRATHERM FTA fire tube boilers are compact powerful units. With a range from 180 to 1600kW there is likely to be an FTA boiler to suit your needs. Utilising hot flue gases from a modulating burner these 3 pass boilers produce how water at 85% efficiency. This can be further by adding a flue recuperator to the system adding up to 7% further efficiency gains.

With a variety of fuel options and the option to weatherproof the units AIRATHERM FTA boilers can be used almost anywhere. 


  • Standard 85% efficiency (to 92% with flue recuperator)

  • 3 Pass wetback design

  • Modulating burner control

  • 500 kPa standard operating pressure

  • Volt free contactors for run flame fail and high limit

  • Relief valve (supplied loose)

  • Pressure and temperature gauges


  • Weatherproof casing     

  • Air Dirt Separator           

  • Dosing pot

  • Special operating pressure up to 1100 kPa

  • Flue recuperator

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