CALIFORNIA RESIDENTIAL AIR EXCHANGE-RATES AND RESIDENCE VOLUMES

Air exchange rate data from two residential indoor air quality studies are presented. In the first investigation, over 500 residences in Sou thern California were sampled for three one-week periods from 1984 to 1985. Those data provided seasonal information for a broad range of re sidential characteristics in a large metropolitan area. In the second study, a probability sample of nearly 300 residences were sampled for a two-day period during the winter of 1991-1992 throughout the state o f California. Air exchange rate is summarized by season, geographic ar ea, and appliance type. Residence volumes are presented by cooking and hearing appliance. The data approximately followed lognormal distribu tions. Implications: Indoor air quality and human exposure models ofte n require estimates of air exchange rate and residence volumes. Applic ation of those models to California residences can be improved by usin g the data distributions provided in this manuscript. Data distributio ns presented for heating and cooking appliances are useful for modelin g the impact of indoor sources specific for those appliance types. Mea sured air exchange rate is also useful for modeling energy use for hea ting and codling in residences.