States that with the ill effects of poor indoor air quality often in the news these days, it pays to design and build a house that is healthy from the start. States that a comprehensive approach to residential design has emerged in recent years that makes both energy conservation and good indoor air quality achievable in homes.
Modern one-family houses in Scandinavia are often ventilated by an exhaust fan. Most of the outdoor air probably enters through whatever cracks and openings there are and only a small part enters through the supply vents in many of these houses. The overall supply of outdoor air might be adequate, but some rooms often do not get enough of outdoor air. The constant concentration tracer gas technique was used to examine the supply of outdoor air. Fan pressurization combined with infrared photography were employed to characterize the air leakage of the building.
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