If your business operates a commercial kitchen — a restaurant, hotel, hospital cafeteria, school, or any facility with commercial cooking equipment — the answer is almost certainly yes. Kitchen fires are one of the leading causes of commercial fire loss, and standard sprinkler systems aren’t designed to handle grease fires. That’s where a dedicated kitchen hood fire suppression system comes in.

Why Standard Sprinklers Aren’t Enough

Water-based sprinkler systems are effective against most ordinary combustibles, but grease fires behave differently — water can actually cause a grease fire to splash and spread rather than extinguish it. Kitchen hood suppression systems use a wet chemical agent specifically formulated to cool the fire, suppress vapors, and prevent re-ignition.

How Kitchen Hood Suppression Systems Work

These systems are installed directly into the exhaust hood above cooking equipment (fryers, ranges, griddles, char-broilers) and are connected to nozzles positioned over each individual appliance. When triggered — either automatically by heat detection or manually via a pull station — the system:

• Shuts off the gas or electrical supply to the cooking equipment
• Discharges wet chemical agent directly onto the fire and cooking surfaces
• Coats surfaces to prevent flare-up or re-ignition

NFPA 96 and Testing Requirements

Kitchen hood suppression systems fall under NFPA 96 and are required to be inspected and serviced at least every six months — more frequently for high-volume cooking operations. This isn’t optional: most local fire codes and insurance policies require documented semi-annual service, and an out-of-service kitchen suppression system can shut down your ability to legally operate.

Signs Your System Needs Attention

• It’s been more than six months since your last service
• Nozzles show visible grease buildup or corrosion
• You’ve recently changed or added cooking equipment (systems need to be re-engineered when equipment layout changes)
• The system has never been inspected since installation

How Control Systems Inc. Helps

We design, install, inspect, and service kitchen hood fire suppression systems for restaurants, hotels, healthcare facilities, and institutional kitchens across all of our service markets — including re-engineering systems when kitchen layouts or equipment change. If your last inspection tag is more than six months old, it’s time for a service call.