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FWD Flameproof Air Warmers

The FWD range of air warmers is designed for use in small work or storage areas, and are certified for use in hazardous areas where the atmosphere is classified as a Zone 1 or 2 (IIA, IIB, IIC) gas group, or a Zone 21 or 22 (IIIA, IIIB, IIIC) dust group.

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  • Certified to ATEX, IECEx, CU TR (EAC) and KGS standards
  • Fabricated carbon steel enclosure weatherproof to IP66
  • Temperature classes T2, T3 and T4 available
  • Suitable for horizontal floor or wall mounting
  • 2 × 20mm (plugged) cable entries provided as standard
  • Corrosion resistant powder coated finish
  • T3 / T4 units suitable for ambient temperatures from -60°C to +40°C and T2 units to +60°C
  • Individually replaceable heating elements

  • Aircraft hangar service bays
  • Ammunition depots
  • Battery stores
  • Biogas plants
  • Chemical plants
  • Compressor enclosure
  • Container heating
  • Crane cabins
  • Dusty environments
  • Explosive stores
  • Firework factories
  • Fuel servicing areas
  • Gas installations
  • Offshore installations
  • Paint / solvent stores
  • Skid enclosure
  • Spray booths
  • Sugar refineries


  • ATEX/IECEx Ex II 2 G/D
    Ex d IIC T2 to T4 Gb suitable for Zones 1 and 2
    Ex t IIIC T300 to T135°C Db suitable for Zones 21 and 22
  • CU TR (EAC)
    1Ex db IIC T4…T2 Gb X
    Ex tb IIIC T135°C…T300°C Db X
  • KGS certification available

  • 500W to 2kW

  • Mild steel powder coated orange/grey (stainless steel option available to special order)

  • If required, the heaters can be controlled from the EXHEAT Industrial range of remote mounted thermostats available for use in hazardous areas

  • Pre drilled support feet supplied as standard; heaters should be mounted horizontally with unrestricted air flow around the unit

  • 1 phase: 110 to 120V and 230 to 254V
  • 3 phase: 380, 440, 480 and 690V, subject to design parameters
  • Voltage tolerance: +0/10%
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