Kitchen Hood Fire Suppression Systems
Specialized wet chemical fire suppression for commercial kitchens — protecting your cooking line, your staff, your investment, and your ability to stay open for business.
Grease fires are the leading cause of commercial kitchen fires
They ignite fast, burn extremely hot, and cannot be extinguished with water. A kitchen hood fire suppression system is specifically designed to handle this threat — deploying wet chemical agents directly onto cooking surfaces and into the hood and duct to knock down flames and prevent reignition.
In California, every commercial cooking operation with grease-producing equipment is required to have a listed and properly maintained hood suppression system. This includes restaurants, cafeterias, food trucks, hotel kitchens, hospital kitchens, school cafeterias, and any facility with commercial fryers, grills, or ranges under an exhaust hood. Hydrotek Fire Systems provides full-service installation, inspection, maintenance, and repair for these systems.
How a Kitchen Hood System Activates
Understanding the system helps you appreciate why regular maintenance is so critical — every component must function correctly to protect your kitchen.
Heat Detection
Fusible links mounted in the hood above cooking appliances detect excessive heat. When temperatures exceed a set threshold, the link melts and triggers the system.
Gas Shut-Off
The system automatically shuts off the gas supply to cooking equipment, eliminating the fuel source feeding the fire.
Agent Discharge
Wet chemical agent is discharged through nozzles positioned over each protected appliance, the hood plenum, and into the duct — smothering the fire and coating surfaces to prevent reignition.
Manual Activation
A manual pull station is also installed near the kitchen exit, allowing staff to trigger the system immediately if they spot a fire — without waiting for the fusible links to activate.
Our Kitchen Hood Services
Complete lifecycle support for commercial kitchen fire suppression
System Installation
We design and install complete kitchen hood fire suppression systems for new restaurant build-outs, kitchen remodels, and equipment changes. Every installation is tailored to your specific cooking line — nozzle placement, agent volume, and coverage zones are calculated based on the type and layout of your appliances. We coordinate with your hood installer, gas plumber, and the local fire marshal to ensure everything passes inspection on the first visit.
Semi-Annual Inspection
California Fire Code and NFPA 96 require kitchen hood suppression systems to be inspected and serviced every six months by a licensed technician. During each inspection, we check all fusible links, nozzle alignment and caps, agent tank pressure and expiration, manual pull station operation, gas shut-off function, and overall system condition. You'll receive a dated inspection tag on the system and a written report for your records.
System Recharge
After a system activates — whether from an actual fire, accidental discharge, or testing — the wet chemical agent tank needs to be recharged and all fusible links and nozzle caps replaced before the system can protect your kitchen again. We respond quickly to get your system recharged and operational so you can reopen as fast as possible.
System Modifications
Changed your cooking equipment? Added a new fryer? Moved your grill? Any change to your cooking line means your suppression system needs to be re-evaluated and potentially reconfigured. We assess the updated layout, reposition or add nozzles, adjust coverage zones, and verify the system's agent volume is adequate for the new configuration.
Repair & Troubleshooting
Damaged nozzles, corroded piping, faulty gas shut-off valves, broken pull stations, expired agent tanks, and accidental discharges — we diagnose and repair all kitchen hood suppression system issues. If your system was flagged during a fire marshal inspection or a health department visit, we can get the deficiencies corrected quickly so you avoid fines, closure, or loss of your operating permit.
Commercial Kitchens We Protect
From local restaurants to large institutional kitchens
Compliance Requirements
Kitchen hood suppression systems are regulated by multiple overlapping codes. Failing to maintain your system can result in fire marshal violations, health department citations, insurance claim denials, and even forced closure. We keep you compliant across all of them.
Every inspection we perform comes with proper documentation — inspection tags, written reports, and deficiency notices — so you have a paper trail ready for any inspector who walks through your door.
Signs Your System Needs Attention
Call us to schedule an inspection or repair before it becomes a code violation or failure during an actual fire.
Inspection tag is more than 6 months old or missing entirely
Nozzle caps are missing, loose, or caked with grease
Fusible links are visibly corroded, bent, or coated in grease buildup
You changed, added, or rearranged cooking equipment since the last inspection
The manual pull station is blocked, damaged, or hard to reach
You received a violation notice from the fire marshal or health department
The agent tank gauge shows low pressure or the tank is past its expiration date
The system accidentally discharged and hasn't been recharged yet
Why Choose Us for Kitchen Hood Protection
Specialized expertise, fast response, and full compliance documentation
Licensed Technicians
Our team is fully trained and certified on all major wet chemical system brands — we know the equipment inside and out.
Fast Turnaround
After an activation or during an inspection deficiency, we respond quickly to get your system back online and your kitchen operating.
Complete Documentation
Inspection tags, written reports, deficiency notices — we provide the paper trail you need for fire marshals and health inspectors.
Kitchen-Focused Service
We understand restaurant operations. We work around your schedule to minimize downtime and disruption to your business.
Don't wait for a violation — or a fire
Schedule your semi-annual inspection, request a new installation, or get an emergency repair. Hydrotek Fire Systems keeps your kitchen protected and code-compliant.
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