What is NFPA 96?
NFPA 96 is the National Fire Protection Association's standard for ventilation control and fire protection in commercial cooking operations. It covers the whole exhaust system, from the hood and filters through the ductwork to the exhaust fan, and it's the standard most fire marshals and insurers point to when they inspect a commercial kitchen.
Why does it matter?
Every time you cook, grease vapor travels up into the hood and ductwork and settles there. Over time that buildup becomes fuel, and a fire that starts on the line can spread into the duct, where it's much harder to put out. Keeping the system clean is one of the simplest ways to protect your staff, your customers, and your business.
How often does NFPA 96 require cleaning?
It depends on how much and what kind of cooking you do. The standard sets the inspection schedule by volume:
- Monthly for systems serving solid-fuel cooking, like wood or charcoal.
- Quarterly for high-volume cooking, such as 24-hour operations, charbroiling, or wok cooking.
- Semiannually for moderate-volume cooking.
- Annually for low-volume cooking, such as churches, day camps, and seasonal businesses.
When an inspection finds grease buildup, the system needs to be cleaned, and the work should be done by trained, qualified people who clean the full run, not just the parts you can see.
What happens if you fall behind?
A kitchen that isn't keeping up can fail a fire inspection, get cited, or run into trouble with its insurance carrier, especially after a claim. The bigger risk is the fire itself, which can shut a restaurant down for weeks or for good.
How do you stay compliant?
Set a cleaning schedule that matches your cooking volume, keep the service records, and make sure whoever does the work cleans the hood, ductwork, and fan as one system. Affordable Duct Cleaning cleans commercial kitchen exhaust systems for restaurants and businesses across Western Massachusetts and Northern Connecticut. If you have questions about your schedule or want to book a cleaning, call us at (413) 359-6570 or visit affordableduct.com.

