Indoor air quality: potential audit strategies.

States that any residential energy-conserving retrofit program should should include an indoor air quality audit. Proposes a basic audit strategy that would minimize the number of actual on-site pollutant measurements. The first step involves compiling an inventory of indoor pollutants (through an owner questionnaire or visual audit) and assessing the amount of pollutant injected into the home from known sources with a narrow emission rate (eg. gas stoves). The second step is to measure the pollutant source strengths of unknown sources, with emission rates that vary widely (eg. radon). Suggests that future research should be directed towards characterizing the pollutant emission rates of all indoor sources and developing reliable field techniques to characterize unknown sources.