How to Clean a Commercial Kitchen Hood Suppression System?

  • June 20, 2023

A well-maintained commercial kitchen is essential for the success of any food establishment. One crucial component that requires regular cleaning is the kitchen hood suppression system. Proper cleaning of this system ensures its effectiveness in preventing and suppressing fires. In this blog post, we will outline a step-by-step guide on how to clean a commercial kitchen hood suppression system.

Safety Precautions:

Before beginning the cleaning process, it is crucial to prioritize safety. Turn off all appliances under the hood, including the gas supply. Ensure the suppression system is disarmed and disconnected. Put on protective gear such as gloves, goggles, and an apron. Also, cover the cooking appliances with plastic sheets to prevent any cleaning solution from coming into contact with them.

Remove Grease Buildup:

Start by removing the grease buildup from the hood, filters, and ductwork. Use a degreaser or a suitable commercial cleaning solution. Apply the solution generously to the hood, filters, and inside the ducts. Allow it to sit for a few minutes to loosen the grease. Then, scrub the surfaces thoroughly using a brush or a scrub pad. Pay special attention to areas with heavy grease accumulation, such as the exhaust fan blades and the filter mesh.

Clean Filters:

Next, focus on the filters, which play a crucial role in trapping grease and preventing it from entering the ductwork. Remove the filters and soak them in a sink or a tub filled with warm water and dish soap. Allow them to soak for a few minutes, and then scrub them gently with a brush to remove any remaining grease or debris. Rinse the filters thoroughly and let them air dry before reinstalling them.

Clean Ductwork:

Cleaning the ductwork requires professional expertise, as it involves disassembling parts and accessing hard-to-reach areas. It is advisable to hire a certified kitchen hood cleaning service for this step. They have the necessary equipment, knowledge, and experience to thoroughly clean the ductwork, removing any grease buildup or blockages that could hinder the system’s performance.

Reassemble and Test:

Once all the components are clean and dry, reassemble the hood suppression system carefully. Double-check that all the connections are secure and tight. Reinstall the filters and ensure they are properly aligned. Finally, reactivate the suppression system, gas supply, and appliances. Run a test to ensure everything is functioning correctly, including checking the functionality of the fire suppression system.


Cleaning a commercial kitchen hood suppression system is a crucial task for maintaining a safe and efficient kitchen environment. By following these step-by-step guidelines, you can ensure the system operates at its best, reducing the risk of fire and ensuring the safety of your staff, customers, and establishment as a whole.

Kanex Fire, a renowned provider of fire fighting equipment, offers comprehensive solutions for commercial kitchens and beyond. Their expertise and high-quality products can help ensure the safety and compliance of your establishment.

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