FWD Flameproof Air Warmers

Product Applications
  • Aircraft Hanger 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 Refinieries

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.


  • 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 -60ºC to +40ºC and T2 units to +60ºC
  • Individually replaceable heating elements



ATEX / IECEx    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

1Ex db IIC T4...T2 Gb X
Ex tb IIIC T135°C...T300°C Db X

KGS certification available

Rating 500W to 2kW
Enclosure Mild steel powder coated orange / grey (stainless steel option available to special order)
Controls If required, the heaters can be controlled from the EXHEAT Industrial range of remote mounted thermostats available for use in hazardous areas
Mounting 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%