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Home > Cabinet Heaters > Thermobile AT400 Fixed Cabinet Heater - Universal Oil

Thermobile AT400 Fixed Cabinet Heater - Universal Oil 41kW

  • Thermobile AT400 Fixed Cabinet Heater - Universal Oil
  • 41kW Heat Output
  • 3000 m³/h Airflow
  • Diesel, Bio Oil or Waste Oil Fuelled
  • 230v Power Supply
  • 55 Litre Internal Fuel Tank
  • Tough & Robust Design
  • Easy To Install
  • Ideal For Workshops & Garages

Please note: The AT400 has been discontinued by Thermobile & replaced by the Thermobile BioEnergy 2


Please note: The AT400 has been discontinued by Thermobile & replaced by the Thermobile BioEnergy 2

Thermobile AT400 Waste Oil Cabinet Heater

Save time, money, effort and waste by recycling used oil

Using a revolutionary system that can utilize recycled waste oil as fuel, the Thermobile AT 400 universal oil fired cabinet heater has the potential to save the operator thousands of pounds in fuel bills over its total service life, whilst at the same time offering exceptional and consistent performance. These cabinet heaters can be fuelled with diesel, red diesel, bio diesel, 35 second heating oil, processed fuel oil (PFO), rapeseed oil, linseed oil, certain vegetable oils and waste oil from diesel or petrol engines, gearboxes, transmissions, hydraulic systems, diesel oil or any combination of these. (Subject to licensing control). The following must not be used; solvents, thinners, petro-chemical based oils, transformer oil or any oil above S.A.E. 90.

100% clean, odourless heated air

Perfect for both commercial and industrial applications

The Thermobile AT400 waste oil heater utilizes a built-in fuel tank, integrated heat exchanger, perforated combustion chamber and internal vaporizing burner with draw system for easy lighting, maximum efficiency from whatever fuel source has been implemented and the reliable offering a fixed outlet temperature of between 50 and 70 °C. Despite having the ability use waste oil, this doesn’t mean that the air or heating quality is compromised, as like other Thermobile heaters of this type, the AT 400 only emits 100% clean, odourless air. This unit also includes an extra burner dish as standard. The fumes produced during the combustion process are safely flued out of the space using a flue kit (sold seperately).

The AT400 features a high capacity axial fan providing a heated air flow of 3,000 cubic metres per hour. The high efficiency of the AT400 is achieved by a built-in, large surface heat exchanger, through which all the gases have to pass before entering the flue. The high capacity axial fan draws air from the workshop over the heat exchanger and combustion chamber and expels warm air into the building, providing a constant recycling of warm air

Perfect for applications including workshops, warehouses, transit sheds, garages or other locations that may benefit from utilizing waste oil, this cabinet heater also possesses all the characteristics that make it suitable for day-to-day use. The safe outer shell casing is durable and powder coated to effectively protect the internal components from accidental damage on site.

Safe, reliable and exceptional build quality

Starring oil overflow and overheat security thermostat.

During operation, this waste oil burner also employs an overheat security thermostat and oil overflow security protection which also goes towards this protection and promotes positive maintenance practices.

Please observe all manufacturer recommended conditions and safety information when operating these heaters, and ensure correct and suitable ventilation is properly implemented before use. Please also ensure all local and national building rules and regulations are followed before operating.

For more information on the Thermobile AT400 universal fired heater, accessories, spares or any other heater in National Heater Shops’ extensive range, then call our friendly experts on the sales team today.


Technical Information:
Heat output (Btu/hr): 82000-140000
Heat output (kW): 24-41
Heated air flow (m3 /hr): 3000
Fuel consumption oil (l/hr): 3.0-4.0
Tank Capacity (litres): 55
Power consumption 230 V (AMPS): 1.1

Exceptional service

Great customer service and responses, quick delivery and outstanding product

Marion Oakes

Quality product

High, professional quality. Prompt delivery, arrived in perfect timing.


Works perfectly

perfect, exactly what we've been looking for, fast shipping and high quality

gurmit ashby