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01376 500595 (Essex & East London Office)
01707 376699 (Hertfordshire, North & West London Office)


Outstandingly efficient compressed air drying for Oil Free Rotary Screw Compressors

The patented i.HOC rotary dryer from HPC KAESER uses up to 100% of compressor heat. Thanks to full-flow regeneration, it delivers reliable pressure dew points up to an ambient temperature of 45 °C – completely without electrical heating or additional cooling of the regeneration air.

  • Integrated i.HOC dryer option available in air-cooled or water-cooled units
  • Unit rated power from 37 kW to 200 kW
  • Unit flow rates from 3.3 m³/min to 30 m³/min
  • Integrated SIGMA CONTROL 2 (SC2) compressor controller (SFC model versions)
  • Available integration with - Air Cooled Compressors in the (CSG-2 & DSG-2 series) and the Water Cooled Compressors in the (DSG-2 series).


  • Sub-zero pressure dew points even in high ambient temperatures: 
    Thanks to its extraordinary regeneration potential, the i.HOC delivers below-zero pressure dew points even with high cooling medium temperatures.
  • Pressure dew point stability even with variable flow rates: 
    The pressure dew point remains stable even with low compressor load – no partial-load compensation required.
  • Effective drying & heat recovery: 
    i.HOC uses the heat exchangers of the second compression stage, which have been optimised for heat recovery, as regeneration air.


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© 2019 Chelmer Pneumatics & Compressors Ltd.

Chelmer Pneumatics & Compressors Ltd is a company registered in England and Wales with company number 2190542. Registered office: Bellcroft, Eastways, Witham, Essex CM8 3YU.

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