Steam, hot water and central heating boilers

Callens is the number one specialist in the design, installation and maintenance of steam boilers, hot water boilers, central heating boilers, thermal oil boilers and energy recovery systems. We complete some 50 steam, central heating and hot water boiler projects every year and, so far, have commissioned well over 2000 systems. Undisputed market leader in Belgium or what?

Market leader in Belgium

Even in the field of steam, hot water and central heating boilers, we have managed to leave our mark thanks to our original designs, successful installations and unbeatable service.

We stock the widest range on the market so that, time and again, we are in a position to offer you a reliable and safe production process: from steam generators to fire-tube boilers with a steam output of 150-55,000kg/h.

We guarantee you maximum energy efficiency and an execution that meets the applicable legislation.

Our product range

  • Steam, hot water and central heating boilers
  • Output: 150-55,000kg/h
  • 0.5-30bar operating pressure
  • Bio)gas – heating oil – biochemical fuel
  • Fire-tube boilers – coil boilers – waste gas boilers
  • Emissions in accordance with Vlarem II

Projects

To give you an idea of the extent of our expertise in steam, hot water and central heating boilers, we thought it might be nice to offer you a selection of our most impressive projects. Hot off the press!