Energy saving and CO2 reduction. The German CO2 reduction programme and the requirements to be met by the building equipment technologies.

The greenhouse effect is one of those topics in environmental politics which are currently worldwide at stake. There are several national concepts aiming at the diminution of CO2-emission in order to lessen the greenhouse effect. One of these concepts is the CO2-reduction programme of the Federal Republic of Germany. With this resolution, passed on November 7th, 1990, Germany's Federal Government aims high: national carbondioxide emission is to be cut back by 25 per cent by the year 2005. The programme contains new requirements to be met by the building equipment technologies, where mainly modifications of residential heating and ventilation systems are to be considered. This lecture presents the Federal Government's suggestions and discusses them critically in view of the lack of capacity among the building equipment and construction companies. Besides, it gives the amount of CO2 that can ce prevented from emitting into the atmosphere through the installation of ventilation systems with heat recovery.