As a method of suppressing cold drafts from a staircase leading to an open ceiling space, without reducing the openness of the space, we proposed stair surface heating that warms the surface of the stairs. We confirmed the effect with an experiment conducted in an actual house. As a result of the experiment, it was shown to be possible to suppress cold drafts by heating the surface of the stairs. The degree of suppression was influenced by the rotation of a ceiling fan.
