Direct diesel space heaters provide the cheapest way of heating larger industrial areas, though they should only be used in areas with lots of ventilation, where the need to produce clean air is reduced. This is due to the effect that any fumes, produced during combustion of the fuel, could have in a confined space; as well as the effects of oxygen depletion - a direct fired heater creates a flame which depletes the oxygen levels in the air in order to sustain ignition. Our Arcotherm GE range of space heaters provide large volumes of heat quickly; they are widely used in the construction/building sector, on construction sites, in warehouses and workshops, and in agriculture, for a range of heating and drying applications.