What is the intermittent mechanical exhaust rate required for a kitchen?

In kitchen ventilation, the intermittent mechanical exhaust rate is critical for effectively removing heat, humidity, and cooking odors. The correct range of 25-50 cubic feet per minute (cfm) is established based on typical cooking activities and the need for adequate air circulation without excessive noise or energy consumption.

This range is considered optimal for managing the common emissions produced during regular cooking, ensuring that the environment remains comfortable and safe. It is sufficient to handle the typical output from stoves, ovens, and other kitchen appliances, which can generate steam, smoke, and particulates. Moreover, using a fan that operates within this range helps maintain a balance between exhaust efficiency and energy use, making it a practical choice for most residential or commercial kitchen settings.

The other ranges either do not meet the usual requirements or could lead to unnecessary energy expenditure or noise pollution, making them less suitable for standard kitchen ventilation systems.