An experimental study was conducted to evaluate the performance of heat transfer for turbulent flow through a tube using air as the working fluid with perforated rectangular strip inserts. Mild steel rectangular strips of different pore diameters 2.1, 3.2, 4.25, 5.3, and 7.42mm with corresponding porosities of 1.1%, 2.5%, 4.4%, 6.8%, and 13.3%, respectively, were used in the flow field. Heat transfer and pressure drop data were taken for Reynolds numbers ranging from 14,000 to 47,000. The experimental results showed that the Nusselt number, heat exchanger effectiveness, and friction factor were higher than those of the plain tube. The Nusselt number and the friction factor for employing the perforated strip inserts were found to be increased up to 2.65 and 1.75times, respectively, over the corresponding plain tube. The heat transfer performance was evaluated and found to be 2.5times higher compared to the plain tube based on the constant blower power. Finally, a correlation was developed with the experimental data for prediction of heat transfer in turbulent flow through a tube with perforated rectangular strip inserts.