Abstract: An apparatus and a method for setting a combination desired temperature for a plurality of air conditioners installed in a target zone, and a method for calculating base relationship information of the target zone include setting a combination desired temperature of a top-priority air conditioner among the air conditioners by at least one test driving of the top-priority air conditioner, the combination desired temperature of the top-priority air conditioner being a desired temperature of the top-priority air conditioner for realizing a comfortable temperature range of the target zone; and in response to a temperature of at least one temperature sensor among temperature sensors being outside the comfortable temperature range while the top-priority air conditioner is driven at the combination desired temperature of the top-priority air conditioner, adjusting the combination desired temperature of the first air conditioner through test driving of the first air conditioner.

Abstract: An apparatus and a method for predicting an amount of temperature change of a target zone are provided. The method includes collecting a plurality of base information, and calculating base relationship information between an indoor/outdoor temperature difference of the target zone and an amount of temperature change of the target zone on the basis of the plurality of base information. Each of the plurality of base information is information on the amount of temperature change of the target zone according to the indoor/outdoor temperature difference of the target zone during a late night time section, and the late night time section is set on the basis of at least one of activity schedule information, a sunrise time point, and a sunset time point of the target zone.