Dr G.G. Rajan, Chief Executive of Technosoft International has published a very informative book with the title ‘Optimising Energy Efficiencies in Industry’. In support of the chapter on Fired Heaters, Dr. Rajan has made available a presentation pack that can be used as the guiding material for a typical two hour presentation for process operators. This following article is consists of an abstract of this training material, focusing on practical techniques to monitor and improve heater efficiency.