What is the minimum distance for return air openings in kitchens from cooking appliances?

The minimum distance for return air openings in kitchens from cooking appliances is set at 10 feet to ensure proper ventilation and to avoid contamination of the return air with cooking fumes and heat. This distance is critical because cooking appliances can emit smoke, steam, and odors that may degrade indoor air quality if allowed to directly mix with return air.

Maintaining this distance helps in promoting efficient airflow and ensuring that the return air system does not draw in excess heat or contaminants from cooking operations. Additionally, it reduces the likelihood of creating pressure differentials that could negatively impact the performance of heating and cooling systems. Properly locating return air openings provides a more effective and healthier kitchen environment, which is essential for both comfort and safety.