Abstract
This paper analyzes how much the change of thermal sensations has impact on comfortability by Structural Equation Modeling. The data for analysis include twenty two experiments' vote for their feeling on several conditions. Applying 4 kinds of models to the data, we found 3 findings as follows. 1) The model dealing with the change of thermal sensations has the fittest indices. 2) Changes of thermal sensations of buttock and chest have great impact on comfortability. 3) Change of fatigue impression has no relation with comfortability.