I-CUB: ‘Indoor Climate-Users-Buildings’: Relationship between measured and perceived indoor air quality in dwellings

Abstract Assessment of indoor environmental quality has recently moved to a combined methodology both measurements and questionnaire surveys. In this study, we have used data from the national survey Swedish housing stock, BETSI, conducted in 2007/2008, during heating season. The study included, among others, measurement selected air pollutants an extensive on occupants’ perception their dwellings. Measured concentrations NO 2 , TVOCs formaldehyde were aggregated into one Indoor Air Pollution Index (IAPI) continuous scale between 0 (excellent Quality; IAQ) 10 (poor IAQ). perceived IAQ was assessed by occupants 5-point category very good poor. On entire IAPIs, 92% respondents single-family houses as or 8% acceptable, while apartments, ratings ‘very good’ ‘good’ accounted for 58%, acceptable 33% 9 % ‘poor’ poor’, respectively. building types, tendency IAPIs shifted lower values (good Analysis IAPI-medians showed no statistically significant differences ratings.