Interior Air Quality Performance Requirement:

• The dwelling unit must be free of pollutants in the air at levels that threaten the health of the occupants

Interior Air Quality Acceptability Criteria:

• The dwelling unit must be free from dangerous levels of air pollution from carbon monoxide, sewer gas, fuel gas, dust, and other harmful pollutants
• There must be adequate air circulation in the dwelling unit
• Bathroom areas must have one openable window or other adequate exhaust ventilation
• Any room used for sleeping must have at least one window. If the window is designed to be openable, the window must work