What is the minimum required outdoor exhaust airflow for a kitchen in a private dwelling?

The minimum required outdoor exhaust airflow for a kitchen in a private dwelling is established to ensure adequate ventilation and help maintain indoor air quality, especially in areas where cooking can produce smoke, odors, and excess moisture.

The value of 100 CFM intermittent has been set as a standard to provide enough airflow to effectively remove these contaminants during cooking activities. Intermittent ventilation refers to the system being switched on when needed, particularly during periods of high cooking activity, which can generate significant amounts of heat, steam, and airborne particles. This level of airflow is considered sufficient to manage these emissions, preventing buildup in the kitchen environment.

In contrast, the other options do not meet the recommended guidelines for effective kitchen ventilation. Lower CFM values would not provide adequate exhaust capacity to handle typical cooking conditions, resulting in poorer air quality and potentially hazardous living conditions over time. The establishment of a standard like 100 CFM efficiently balances the need for fresh air with energy efficiency and practical usage in the home.