This study aimed to clarify the method to compute response factors of temperature response. At the beginning, representative wall compositions were investigated. Subsequently, appropriate root sequence and weight ratio for the least-squares method were investigated concerning representative walls. The results confirmed that the error of computed response factor is small if the minimum value, maximum value, numbers of the sequence, and index number for weight ratio are 1/(86400×15)[s-1], 1/60[s-1], 10 and 2, respectively.
