What key outcomes does IEQ strive to improve?

• A. Thermal insulation and structural integrity.
• B. Indoor air quality, thermal comfort, visual comfort, acoustics, and daylighting for occupant health and well-being.
• C. Annual energy use.
• D. Outdoor noise only.

Answer: (B)

Indoor Environmental Quality focuses on the conditions inside a building that affect occupant health and well-being, and it aims to improve several interrelated outcomes: indoor air quality, thermal comfort, visual comfort, acoustics, and daylighting. Together, these elements influence how people feel, perform, and stay healthy in indoor spaces. Indoor air quality covers contaminants and ventilation, thermal comfort covers stable temperature and humidity, visual comfort covers lighting quality and glare control, acoustics cover noise levels and sound quality, and daylighting covers the amount and quality of natural light. These aspects are central to occupant health and comfort, not just energy use or exterior or structural considerations. So the best answer centers on improving IAQ, thermal and visual comfort, acoustics, and daylighting for the well-being of occupants.