How Is Kitchen Exhaust Engineered for Casino Restaurants?

The equipment schedule is the source of truth. I take the food service consultant's list — every fryer, broiler, range, oven, and kettle — and lay it out under hoods, classifying each section by cooking duty per the code tables. The hood dimensions follow the equipment with the required overhang, and the exhaust rate follows the heaviest duty under each section. Island hoods need higher rates than wall hoods for the same equipment because capture is harder. I review the layout with the chef's team for workflow: the equipment arrangement that cooks well usually exhausts well, because both follow the logic of the cooking line. Compensating hoods with built-in makeup air get evaluated honestly — they help but rarely eliminate the need for dedicated makeup air. The hood shop drawings are reviewed against the equipment cut sheets before fabrication, because a hood built for the wrong equipment is scrap metal.

Grease duct routing is a fire protection exercise disguised as ductwork. I route the shortest practical path to the exterior with the fewest turns, maintaining the required clearances to combustibles with rated enclosures where the duct passes through the building. Every turn gets a cleanout; horizontal runs get the slope that drains grease to collection. The duct is welded black steel, liquid-tight, and I inspect it before concealment — this is not the place for trust. Fans are selected for the grease airstream: backward-inclined wheels that shed grease, hinged housings for cleaning, and motors out of the airstream. I interlock the exhaust fans with the cooking equipment and the fire suppression so the sequence is automatic: suppression discharges, gas shuts off, exhaust keeps running to clear heat and smoke.

Kitchen exhaust commissioning happens with the cooking line hot. I test and balance every hood with capture verified — the tissue-paper test at the hood edge, smoke visualization of the capture — and confirm the makeup air balance with the dining room. Grease duct welds and cleanouts are inspected before concealment, fan interlocks are tested with the suppression contractor, and the demand-control sensors are calibrated to real cooking. Here is the checklist I hand restaurant operators.

• Design every hood from the equipment schedule, classified by cooking duty with proper overhang
• Route welded liquid-tight grease duct on the shortest path with cleanouts at every turn
• Balance all exhaust with tempered makeup air so the kitchen never starves the dining room
• Use demand-control ventilation to ramp exhaust with actual cooking activity between rushes
• Verify capture with smoke visualization under real cooking load before accepting the system