This paper will therefore deal primarily with the design of a specific building complex.

The model demonstration house described in this paper was designed to optimize occupant health by minimizing indoor air pollution. This was accomplished by the use of three primary principles:  ELIMINATION, SEPARATION, AND VENm.ATION.1 Pollutant source strength reduction has come to be regarded as the most effective method of reducing indoor pollution. This is often easily achieved by ELIMINATING potentially polluting materials wherever possible, and using more benign low outgassing materials instead.

In Sweden there are close to 500000 one-family houses heated by electric baseboard heaters. Of them 90 % were built before 1980. In this group the most common ventilation system is natural ventilation. Half of all houses 'with electric baseboard heaters were built between 1971 and 1980. The Swedish Council for Building Research has been asked by the Swedish government to carry out a program concerning the efficient use of electricity in buildings.

Ventilation is the process by which clean air is provided to a space. It is essential for the provision of fresh air to occupants and for the dilution and removal of pollutants. It is therefore at the focal point of building environmental design. In many climatic regions, ventilation air must be conditioned by heating or cooling. Such treatment frequently incurs a heavy energy penalty. In addition, ventilation systems can be complex and involve space, installation costs, maintenance and operating energy. It is these factors that motivate much ventilation research.

This paper reviews both the theoretical and actual impacts of energy conservation measures on indoor air quality in residential structures. Though it is widely believed that energy conservation measures either cause or contribute to indoor air pollution and possible health effects, the relationship is far more complex than is normally assumed. The impact of energy conservation measures on indoor air quality depends in considerable measure on the nature of a given contaminant, its sources, and responses to changes in infiltration and ventilation conditions..

Balanced ·mechanical ventilation with heat recovery (MYHR) offers, in principle, a way of reducing carbon dioxide emissions from dwellings. In order for such systems to produce a clear reduction in C02 it is necessary for the emissions from the low temperature heat saved to exceed those from the electricity used to drive them. This condition places a lower limit on the coefficient of performance (COP) of MYHR systems, which in the UK is around 3. The major variable in system performance is the electrical input to the fans.