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Restaurant hood cleaning is one of those tasks that’s invisible when it’s done right and catastrophic when it’s neglected. Grease builds up inside exhaust hoods, filters, and ductwork every time you cook, and that grease is highly flammable — the leading cause of commercial kitchen fires. Beyond safety, regular hood cleaning is a code requirement that fire marshals and insurers take seriously. This guide covers the requirements, the cleaning schedule based on your cooking volume, and why professional service is the standard.
| Key Takeaways |
| It’s a fire-safety requirement, not optional — grease buildup is the top cause of kitchen fires. |
| Frequency depends on volume: from monthly for heavy/solid-fuel cooking to annually for low-volume. |
| Keep documentation: service records and certification stickers matter for inspections and insurance. |
Why Hood Cleaning Is Required
Commercial kitchen exhaust systems are governed by fire codes (widely based on the NFPA 96 standard) because grease-laden vapors coat the entire system as you cook. Left unchecked, that grease becomes fuel for a fast-spreading fire. Regular professional cleaning of the hood, filters, and ductwork removes that fuel, keeps your suppression system effective, and satisfies fire inspectors and insurers.
How Often Should Hoods Be Cleaned?
Required frequency is tied to how much and what you cook. The commonly referenced schedule is:
| Cooking operation | Typical cleaning frequency |
|---|---|
| Solid fuel (wood, charcoal) | Monthly |
| High-volume (24-hour, charbroiling, wok) | Quarterly |
| Moderate-volume | Semi-annually |
| Low-volume (seasonal, churches, day camps) | Annually |
When in doubt, follow the schedule your local fire authority and insurer specify for your operation.
What Professional Hood Cleaning Covers
- The hood interior and exterior surfaces
- Grease filters (cleaned or replaced)
- Ductwork and the exhaust fan on the roof
- Access panels and the full run of the system to bare metal where accessible
- A service certification and dated sticker for your records
Daily Steps Between Professional Cleanings
Between certified cleanings, your staff should clean or swap grease filters regularly and wipe down hood surfaces, which slows buildup and keeps the system working. This daily upkeep pairs with a full kitchen deep-clean routine — see our restaurant kitchen deep-cleaning checklist.
Frequently Asked Questions
It depends on cooking volume: roughly monthly for solid-fuel cooking, quarterly for high-volume, semi-annually for moderate, and annually for low-volume operations, per widely used fire-code guidance.
Commercial kitchen exhaust systems must be cleaned to fire-code standards, and certified professional cleaning with documentation is the standard fire marshals and insurers expect.
Grease buildup dramatically raises fire risk and can lead to failed inspections, fines, voided insurance claims, and shutdowns. It’s a serious safety and compliance issue.
Need commercial kitchen cleaning in Orlando? Clean Corps supports restaurants across Central Florida with deep cleaning and kitchen maintenance. Contact us for a free quote.
About the Author
Lindsay Hatton is a cleaning and home-care specialist at Clean Corps, a locally owned, licensed and insured company serving Orlando and Central Florida. She writes practical, field-tested guides on professional cleaning, home maintenance, and property care.
