The design of an earth to air heat exchanger (EAHE) requires knowledge of its total thermal resistance (R_Tot) for heating and cooling applications. In this study, 47m horizontal, 56cm nominal diameter U-bend buried galvanized actual EAHE experimental results were used for the determination and evaluation of thermal properties of heat exchanger. This system was designed and installed in the Solar Energy Institute, Ege University, Izmir, Turkey. Based on these experimental results, generalized relationships were developed for predicting of thermal resistance of heat exchanger. For this aim in presented study, an analytical method was used. Average total heat exchanger thermal resistance was estimated to be 0.021K-m/W as a constant value under steady state condition.