Comparative Air Quality Study of Bathroom Use in Residential Bedrooms

Indoor air quality in bedrooms, where most people spend around a third of their day, has a significant impact on human health through the quality of sleep. Studies on air quality in residential bedrooms have examined factors affecting air quality, such as the relationship between occupancy patterns and ventilation routines, and the impact of planning has not yet been assessed. This study analyzes how different master bathroom designs affect the air quality in the bedroom. To assess the effect of bedroom air quality, this study compares summer and winter measurements from two dwellings with similar floor areas and occupant types, but with different bathroom-to-bedroom relations. In addition, satisfaction with indoor air quality, an important indicator, was questioned and its connection with sleep quality was evaluated. It was found that the layout of bathrooms in bedrooms is affected by indoor air quality, especially in winter when ventilation is reduced, and that bathrooms leading directly into the bedroom are detrimental to air quality.