Portable fan heater | ATEX gas / dust zones | MFH Bulldog

Portable fan heater | ATEX gas / dust zones | MFH Bulldog
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Portable fan heater | ATEX gas / dust zones | MFH Bulldog

The Bulldog® portable fan heater is the first truly mobile Ex-proof forced air heating solution in the world. With just 28 kg of overall weight and an optional base with castors, the fan heater is extremely easy to handle and deploy. The fan heater casing is moulded from steel reinforced PA 66 polymer for high durability and corrosion resistance. The Bulldog can be used in onshore industrial areas and offshore applications alike. The fan heater can be optionally ordered with a flexible duct for delivery of hot air at a longer distance even at outdoor temperatures as low as 40°C.

‘The Bulldog’ is trademarked under the European Union Intellectual Property Office registration number 016118069.

The Bulldog® is a compact, lightweight and robust portable fan heater certified for operation in Ex-zones (classified as Zone 1, 2, 21, and 22). These features make the Bulldog the first truly portable Ex-proof fan heater fit for operation in onshore industrial settings or offshore locations. The Bulldog weights 28 kg only and can be deployed on adjustable feet or castors for better mobility.

The fan heater is suitable for heating of moderately sized spaces. The hot air stream can be easily delivered to as far as 5 metres from the unit. The fan heater can optionally be fitted with flexible ducting to deliver hot air to remote rooms. The flexible ducting also improves the heating efficiency at very low outdoor temperatures (below zero).

Not only portable, but extremely compact in form for easy storage and transport. The fan casing and impeller are made of steel sheet coated with 30% PA66 polyamide polymer; the material shields electromagnetic interference and prevents electrostatic charge accumulation. The fan heater motor features an aluminium casing preserved with epoxy coating, and all electrical enclosures are made of stainless steel (reinforced Ex e enclosure) and anodized aluminium (flameproof Ex d enclosure).

The outer casing of the Bulldog® is designed not just to provide toughness and a long operating life. The casing geometry improves the air flow through the heater to provide optimum heating efficiency. As it is formed from polymer-coated steel sheet, the Bulldog® is tough and durable. The Bulldog can be placed blowing air at an angle by adjusting its feet which improves flexibility of its positioning; the compact form makes the fan heater easy to handle and store.

Depending on the fan heater model, the available power rating ranges from 2.75 kW to 6 kW. The following is the reference heating time required by a 6 kW fan heater to reach a target indoor temperature of 27°C, depending on the room size and characteristics:

  • Indoor room with low thermal insulation, floor area 24 m 2; initial temperature -15°C; target temperature 27°C; room heating time: 22 min
  • Indoor room with high thermal insulation, floor area 110 m 2; initial temperature 0°C; target temperature 27°C; room heating time: 52 min

‘The Bulldog’ is trademarked under the European Union Intellectual Property Office registration number 016118069.

  • Ex-proof design
  • Adjustable feet base / optional castors
  • Rated power: 2.7 to 6 kW (varies with the model)
  • Casing material(s): Steel sheet coated with 30% PA66 (polyamide polymer)
  • Fan impeller material(s): Steel sheet coated with 30% PA66 (polyamide polymer)
  • Motor casing material(s): epoxy-coated aluminium
  • Electrical enclosure material(s): stainless steel (reinforced Ex e enclosure); anodized aluminium (flameproof Ex d enclosure)
  • Ambient temperature range: -40°C to +40°C
  • Optionally supplied on a long flying lead
  • A large selection of monitoring sensors
  • High-precision manufacturing
Portable fan heater | ATEX gas / dust zones | MFH Bulldog
  • Dimensions: Length 475 mm x width 470 mm x height 530 mm
  • Supply voltage: 110 V to 277 V (single-phase) / 380 V to 690 V (three-phase)
  • Base weight: 28 kg
  • Power supply system: single or three-phase
  • Ingress protection: IP65


  • Chemical plants
  • Refineries
  • Offshore
  • Gas plants
  • Aircraft hangars
  • Munitions stores
  • Battery stores
  • Fuel handling depots
  • Flexible ducting for extended hot air delivery range, complete with a coupling for the fan heater (length: 7.6 m)
  • Power leads available in various length options
  • Wall mounting bracket kit
  • Safety device (circuit breaker) supplied unwired for inline installation on the power lead
  • Optionally available with 50 mm or 100 mm anti-static castors (which replace the adjustable feet)
  • Optional Ex-proof thermostat controls
  • Status light indicators
  • ATEX
    II 2 G D Ex h
    Ex db eb IIB + H2 T3 … T4 Gb
    Ex tb IIIC T200 ° C … T135 ° C Db
  • IECEx
    Ex db eb IIB + H2 T3 … T4 Gb
    Ex tb IIIC T200 ° C … T135 ° C Db
  • CU-TR (EAC)
    1Ex db e IIB T4 … T3 Gb X lub 1Ex db e IIB + H2 T4 … T3 Gb X
    Ex tb IIIC T135 ° C … T200 ° C Db

Check out examples of available solutions

ex heater offer

Radiator heater – ATEX Gas Zone / Dust Zone

The heater can be used in zones 1, 2, 21, and 22 at risk of explosion from gases, liquid vapors, or dust.

ex heater offer

Room heaters – Gas Zones ATEX

In addition to supplying and installing the heater, we will perform calculations to ensure the required temperature in the room.

ex heater offer

Fan heater – Gas Zone / Dust Zone

The mobile Bulldog® type heater stands out with its compact, lightweight, yet durable design. The device weighs only 28 kg..

ex heater offer

Heaters for enclosures and control stations – Gas Zone / Dust Zone

A compact and efficient heating solution for small and medium enclosures and control stations operating in Ex zones.

ex heater offer

Thermostats for heaters – Gas Zone / Dust Zone

We supply thermostats for use in explosion hazard zones. The devices are fully compatible with our room heaters.

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