The air distribution inside a room containing one person and office furniture under different inlet/outlet and summer/winter configurations was investigated numerically. The steady two-dimensional equations of conservation were solved under defined boundary conditions using computational fluid dynamics. Results were presented in the form of velocity vectors and temperature contours, in addition to, quantitative velocity and temperature distributions. Comfort conditions and effects due to the person and the other occupants on the airflow were examined. The present numerical predictions show that occupants significantly alter the indoor air movement and hence affect comfort conditions. (C) 2003 Elsevier Science Ltd.