Ventilation standards for maintaining acceptable indoor air quality in tight structures are established by which organization?

Ventilation standards for maintaining acceptable indoor air quality in tight structures are established by which organization?

• A. Environmental Protection Agency (EPA)
• B. International Building Code (IBC)
• C. World Health Organization (WHO)
• D. American Society of Heating Refrigeration and Air Conditioning Engineers (ASHRAE)

Answer: (D)

Ventilation standards for keeping indoor air quality acceptable in tightly built structures are developed by a professional organization that specializes in airflow, filtration, and energy-efficient design. This organization publishes the specific requirements for outdoor air supply, ventilation rates, and filtration that engineers use when designing HVAC systems. Those standards are the ones most often adopted into building codes and referenced in design practice, ensuring a consistent, tested approach to IAQ across different buildings and climates. The organization responsible for these widely used standards is the one that creates and updates the ventilation criteria, such as minimum outdoor air rates and methods to quantify indoor air quality. Building codes may reference these standards to enforce proper design, but the standards themselves come from this dedicated engineering society. Other groups, like health-focused agencies or different code bodies, provide guidelines or enforcement frameworks but do not publish the formal, prescriptive ventilation standards used in most design work.

Ventilation standards for keeping indoor air quality acceptable in tightly built structures are developed by a professional organization that specializes in airflow, filtration, and energy-efficient design. This organization publishes the specific requirements for outdoor air supply, ventilation rates, and filtration that engineers use when designing HVAC systems. Those standards are the ones most often adopted into building codes and referenced in design practice, ensuring a consistent, tested approach to IAQ across different buildings and climates.

The organization responsible for these widely used standards is the one that creates and updates the ventilation criteria, such as minimum outdoor air rates and methods to quantify indoor air quality. Building codes may reference these standards to enforce proper design, but the standards themselves come from this dedicated engineering society. Other groups, like health-focused agencies or different code bodies, provide guidelines or enforcement frameworks but do not publish the formal, prescriptive ventilation standards used in most design work.