kitchen hood cleaning frequency 6
https://atomic-wiki.win/index.php/Why_Compliance_with_Fire_Codes_Matters_in_Commercial_Kitchen_Hood_Cleaning
Wondering how often to clean your kitchen hood? For most homes, cleaning the filter every month keeps it working well, especially if you cook often. A deeper clean of the whole hood, including the fan and ducts, is usually needed every 6 to 12 months. Grease buildup can reduce efficiency and become a fire hazard, so sticking to this schedule helps maintain good ventilation and safety in your kitchen.