This paper summarises the views and experience of a company specialising in providing technical solutions for increasing the performance of heat exchangers used in the process industries. It comments on the technical opportunities available to a processor to reduce overall energy use. Emphasis is made to the use of enhancement technology retrofitted to existing heat exchangers. The content provides some understanding of the driving forces or otherwise for companies to invest in saving energy. Examples are provided setting out the benefits achieved using process enhancement technologies. It concludes with the view that the most economic investment in improved efficiency is to address the operation of existing exchangers first improving their performance before considering the costly and usually difficult option of buying and maintaining more plant.