Grease Duct Cleaning

Grease ducts carry grease laden vapors away from the kitchen. These vapors are drawn by an exhaust fan which cools the vapor and allows grease to form on the surface of the ducts.

Grease ducts in restaurant kitchens generally fall under the requirements of NFPA 96. In Los Angeles the requirement for commercial grease ducts is the California Mechanical Code.

Both of these codes lay out the maintenance and construction of commercial grease ducts.

The requirements for cleaning are described as follows: “Hoods, grease removal devices, fans, ducts, and other appurtenances shall be cleaned to remove combustible contaminants prior to surfaces becoming heavily contaminated with grease or oily sludge.” CMC 514.4.1


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