Air pollution resulting from high energy consumption is a major factor threatening our environment. Heating buildings accounts for about 40 per cent of germany's total energy consumption. Current heat insulation regulations for buildings aimed at reducing energy consumption have become considerably more stringent. However, grweater heat insulation and energy saving necessarily restrict the exchange of air between outside and inside the building deteriorates and CO2 and other pollutant contents increase. For this reason, when planning the district headquarters for the Berufsgenossenschaft Gesundheitsdienst und Wohlfahrtspflege (Proffesional Association for Health and Welfare) in Dresden the aim was to produce an economical, environment-friendly building with a high proportion of solar heating and workplaces designed ergonomically and with an eye to health requirements.