In this study, the defrosting behavior according to the surface characteristics of a fin-tube heat exchanger is experimentally examined. It has been found that the draining rates of the hydrophilic and hydrophobic heat exchangers are evenly dispersed during do-frosting, compared with that of the bare one. This is due to the high density frost of the hydrophilic heat exchanger, and the surface characteristics of the hydrophobic heat ex-changer, The rest periods of the hydrophilic and hydrophobic heat exchangers are shorter, and their weight of residual water is also smaller than that of the bare heat exchanger. The hydrophobic heat exchanger is the most efficient in terms of the defrosting efficiency.