Indoor climate and energy consumption of super insulated houses in a mild climate region of Japan.

Two super insulated houses were built according to the Canadian R-2000 construction manual, in Sendai, Japan. The purpose of the construction is to clarify how much space heating energy is saved in a mild climate, and whether there are any problems related to indoor air quality and humidity in the winter and the thermal indoor environment during the summer, compared with an ordinary frame-construction house. This paper describes the measurement results of indoor temperature, humidity and indoor air quality for the winter and summer seasons, and annual energy consumption