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Latest news

  • Callens Group establishes a foothold in France with the acquisition of Cometi
  • The Callens Group and Ketelonderhoud Jonker join forces in the Netherlands
  • Construction of new facilities on Callens’ own properties in Laakdal and Liège
  • Maintenance of thermal installations in full swing
  • Callens Group establishes a foothold in France with the acquisition of Cometi
  • The Callens Group and Ketelonderhoud Jonker join forces in the Netherlands
  • Construction of new facilities on Callens’ own properties in Laakdal and Liège
  • Maintenance of thermal installations in full swing

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Login +32 (0)56 72 08 46
Thermal technology
  • Steam boilers
  • Thermal oil boilers
  • Hot water & industrial central heating boilers
  • Thermal oxidizers
  • Industrial heat pumps
  • Combined Heat and Power (CHP)
  • Rental boiler
Steam boilers
  • Electric
  • Electrode boilers
  • Hybrid
  • Gas-fired
  • Biogas-fired
  • Hydrogen-fired
  • Syngas-fired
  • Liquid waste streams
  • Combined set-up
  • Dual fuel
  • Backup
  • (S)APCS boiler cleaning system
  • Waste heat recovery boiler
Thermal oil boilers
  • Electric thermal oil boiler
  • Gas-fired
  • Biogas-fired
  • Hydrogen-fired
  • Syngas-fired
  • Liquid waste streams
  • Combined configuration
  • Dual fuel
  • Backup
Hot water & industrial central heating boilers
  • Electric
  • Hybrid
  • Gas-fired
  • Biogas-fired
  • Hydrogen-fired
  • Syngas-fired
  • Liquid waste streams
  • Combined set-up
  • Dual fuel
  • Backup
Thermal oxidizers
  • Industrial Odor Control
  • VOC Treatment
Industrial heat pumps
  • Compression heat pump
  • Mechanical vapor recompression (MVR)
Air technology
  • Climate control
  • Process air
  • Extraction
Climate control
  • Industrial ventilation
  • Industrial cooling
  • Industrial heating
Process air
  • Drying
  • Humidification
  • Cleaning
Extraction
  • Industrial dust extraction
  • Gas and vapor extraction
  • Industrial water vapor extraction
Emissions
  • CO2 reduction
  • NOX reduction
CO2 reduction
  • Electrification
  • Valorizing waste flows
  • Combined heat and power (CHP)
  • Energy recovery for thermal technology
  • Energy recovery for air technology
NOX reduction
  • Flue gas recirculation
  • Flue gas treatment
  • Custom boiler design
Service
  • Maintenance
  • 24/7 Service
  • Repairs
  • Maintenance and service contracts
  • Remote monitoring
About us
  • De Callens Group
  • Family of Fire
  • Innovation
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  • History
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