What Happens During a Commercial Kitchen Exhaust Cleaning?

A commercial kitchen exhaust degreasing service is a deep-cleaning process carried out to remove accumulated grease, oil, carbon deposits, and contaminants from the entire kitchen exhaust system. The objective is to reduce fire risk, improve airflow efficiency, maintain hygiene standards, and ensure compliance with local fire and environmental regulations.

A typical service carried out by companies such as Cleaniox Solutions generally includes the following stages:

1. Site Inspection & Risk Assessment
   Technicians inspect the kitchen exhaust system, including the hood, filters, ducts, access panels, extraction fan, and discharge area. Grease buildup levels, accessibility, and safety requirements are assessed before work begins.

2. Preparation & Protection
   Surrounding kitchen equipment, cooking appliances, and flooring are protected using covers or plastic sheeting to prevent contamination during cleaning. Power isolation and permit-to-work procedures may also be implemented where necessary.

3. Filter Removal & Cleaning
   Exhaust filters and grease traps are removed and soaked in degreasing solutions to dissolve hardened grease and carbon deposits. These components are then pressure-cleaned and sanitized.

4. Degreasing of Hood & Plenum
   The internal and external surfaces of the kitchen hood and plenum chamber are cleaned using food-safe degreasers, scrapers, brushes, steam, or pressure washing equipment to remove heavy grease accumulation.

5. Ductwork Cleaning
   Technicians access the exhaust ducting through existing access panels or temporary openings. Specialized rotary brushes, scrapers, negative air systems, and degreasing chemicals are used to clean internal duct surfaces thoroughly.

6. Exhaust Fan Cleaning & Maintenance
   The exhaust fan assembly, impeller blades, motor housing, and fan casing are cleaned to restore airflow efficiency and reduce fire hazards. Belt conditions and fan functionality may also be checked during servicing.

7. Fire Suppression System Precautions
   If the kitchen is equipped with an automatic fire suppression system, the system may be temporarily isolated or protected during cleaning to prevent accidental discharge. Maintenance inspections may also be conducted separately.

8. Waste Collection & Disposal
   Removed grease, sludge, and wastewater are collected and disposed of according to environmental and regulatory requirements.

9. Final Inspection & Reporting
   After cleaning, the system is inspected to verify cleanliness and accessibility. Service reports, photographs, recommendations, and maintenance intervals are usually provided to the client for compliance documentation.

Why Regular Degreasing Is Important

• Reduces kitchen fire risk

• Improves ventilation and airflow efficiency

• Helps comply with fire safety and hygiene regulations

• Reduces odors and smoke accumulation

• Extends the lifespan of exhaust equipment

• Improves overall kitchen working conditions

For heavy-use kitchens such as wok stations, charbroilers, or 24-hour operations, more frequent maintenance is typically required due to faster grease accumulation.