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WTB® commercial condensing heat exchanger

The WTB® heat exchanger is compact resulting in a small footprint. It features a fully water cooled combustion chamber that requires no ceramic insulation. It has a modular design concept and available in capacities up to 350 kW.

The material used is aluminum which naturally generates a protective oxide coating leading to good anti-corrosion properties. Aluminum is a reliable material and has been used in the boiler market for over 35 years. It is available with CE approval as well as with ASME approval for the US.


  • Require no ceramic insulation
  • Competitive pricing through innovative casting technology
  • Only one cylindrical burner and one fan needed
  • Easy access on all sides for maintenance


  • Condensing floor standing boilers for central heating
  • Floor standing boilers for industrial heating

Aconit Burner

The WTB heat exchanger can be combined with an Aconit® burner. Aconit® burners are equipped with Bekaert's Bekinit® material. This is a knitted metal fiber, which has exceptional performance in flame stability and heat insulation.

Our heat exchanger solution offering


Small commercial heat exchanger


Commercial heat exchanger


Commercial heat exchanger


Residential heat exchanger


Large commercial heat exchanger


Commercial heat exchanger