Main benefits of a diesel fired thermic fluid heater include high efficiency of heat transfer, long thermic fluid life, no corrosion or scale problems, no boiler regulations and high temperatures to the tune of 300 degrees C at near atmospheric pressure. Combustion air fed through the outer set of concentric shells to pre-heat the air, ensures better efficiency. A fully automatic burner, complete control panel, a number of safety features, high temperature re-circulating pumps and instrumentation are standard features in these heaters.