If you own or manage a restaurant, one of the most common questions is: How often should I schedule hood cleaning? The answer depends on the type of cooking your kitchen performs. According to NFPA 96: Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, the required cleaning frequency varies based on grease production and cooking volume.
Understanding these requirements helps protect your employees, customers, and business while reducing fire risks and maintaining compliance with local fire codes.
Why Commercial Kitchen Hood Cleaning Matters
Your kitchen exhaust system captures grease-laden vapors, smoke, and heat generated during cooking. Over time, grease accumulates inside the hood, ductwork, filters, and exhaust fan. If not removed regularly, this buildup can:
- Increase the risk of dangerous grease fires
- Reduce ventilation efficiency
- Cause unpleasant odors and smoke issues
- Lead to failed health or fire inspections
- Shorten the lifespan of your exhaust system
Routine professional cleaning removes combustible grease deposits from the entire exhaust system—not just the visible hood.
How Often Do Hoods Need to Be Cleaned?
The definitive answer comes from NFPA 96 Table 12.4, which establishes cleaning intervals based on the type of cooking operation.
NFPA 96 Table 12.4 Cleaning Schedule
| Cooking Operation | Recommended Cleaning Frequency |
| Solid fuel cooking (wood, charcoal) | Monthly |
| High-volume cooking (24-hour operations, charbroiling, wok cooking, fast food) | Quarterly (every 3 months) |
| Moderate-volume cooking | Semiannually (every 6 months) |
| Low-volume cooking (churches, seasonal businesses, day camps, some senior centers) | Annually |
These are minimum inspection and cleaning frequencies. If grease accumulation reaches unsafe levels sooner, cleaning should be performed more frequently.
How Often Is Hood Cleaning Required?
The required frequency depends on your kitchen’s grease production—not simply the age of the system.
For example:
- A busy burger restaurant with multiple fryers and charbroilers will typically require quarterly service.
- A wood-fired pizza restaurant may require monthly cleanings due to heavy soot and grease accumulation.
- A café serving light breakfast items may only require semiannual cleaning.
- Seasonal or low-volume facilities often qualify for annual cleaning.
Your local fire marshal or insurance provider may also require documentation showing that your exhaust system is cleaned according to NFPA 96 guidelines.
How Often Should a Hood Be Cleaned Completely?
A complete hood cleaning involves much more than wiping down visible surfaces.
A professional exhaust cleaning should include:
- Kitchen hood interior and exterior
- Grease filters
- Vertical and horizontal ductwork
- Exhaust fan and fan housing
- Accessible grease collection areas
The goal is to remove grease deposits throughout the entire exhaust system to bare metal wherever accessible. Cleaning only the hood canopy leaves hidden grease inside the ducts and fan, where many commercial kitchen fires originate.
Factors That May Increase Cleaning Frequency
Even if your kitchen falls into one of the NFPA categories, you may need more frequent service if you:
- Operate extended hours
- Use multiple deep fryers
- Cook with solid fuels
- Perform heavy charbroiling
- Produce large amounts of grease daily
- Experience rapid grease accumulation during inspections
A professional inspection can determine whether your current schedule is sufficient.
Signs Your Hood Needs Cleaning
You shouldn’t wait until your next scheduled service if you notice:
- Visible grease dripping from the hood
- Heavy grease buildup on filters
- Excessive smoke during cooking
- Strong grease odors
- Grease around the exhaust fan
- Failed fire or health inspections
These are indicators that grease has accumulated beyond acceptable levels.
Stay Compliant and Protect Your Restaurant
Keeping your kitchen exhaust system clean isn’t just about compliance—it’s an investment in fire safety, operational efficiency, and protecting your business.
If you’re unsure how often should I schedule hood cleaning, the safest approach is to have your system professionally inspected and compared against the NFPA 96 Table 12.4 recommendations.
Schedule Professional Hood Cleaning in Las Vegas
If your restaurant operates in Las Vegas or the surrounding communities, Platinum Kitchen Cleaning Solutions can help you determine the appropriate cleaning schedule based on your cooking operation and grease production.
Whether you operate a high-volume restaurant, food truck, hotel kitchen, casino restaurant, or neighborhood café, our experienced team provides professional commercial kitchen exhaust cleaning designed to help you stay compliant and reduce fire risks.
Contact Platinum Kitchen Cleaning Solutions today to verify your hood cleaning schedule and ensure your commercial kitchen meets NFPA 96 recommendations.