In this study, in order to develop composition ceramics for refrigeration device application at a temperature of less than 90°C, a Ba(Ti_1-xZr_x)O₃ composition was fabricated using a conventional solid-state method. Electrocaloric properties of these ceramics were investigated using the characteristics of P-E hysteresis loops in a wide temperature range from room temperature to 150°C. The Curie temperature of Ba(Ti_1-xZr_x)O₃ ceramics decreased with the increase of x. The maximum value of □T = 0.07°C in an ambient temperature of 85°C under 30 kV/cm appeared when x = 0.125. It was concluded that the composition (x = 0.125) ceramics can be used for refrigeration device applications.