Kitchen Vent Duct Size

If your conditioned air whether heated or cooled is getting pulled out of your facilities at a rate of 2000 cfm or greater it will cost you allot more money in the long run than the initial cost of a mua fan.

Kitchen vent duct size. When using smooth round 8 diameter metal pipe add one cfm per foot of pipe plus 25 cfm for each elbow and 40 cfm for a roof cap. The illustration above shows a typical commercial kitchen application utilizing a roof mount upblast exhaust fan or wall mount upblast exhaust fan in conjunction with a supply fan. Read on to determine how to size your exhaust and supply fans. Exhaust ductwork should be stainless steel below the kitchen ceiling and either stainless steel or aluminum above the ceil ing.

Course content introduction ventilation is the single most important factor in the design construction and operation of commercial kitchens. Hopefully this kitchen exhaust duct sizing guide helps provide some answers and insight about choosing and planning out the size of your duct and how you will run it. The exhaust duct should be liquid tight and pitch back toward the dishwasher. The dishwasher fan should be an alu minum unit.

Without adequate ventilation and an ample supply of clean makeup air no kitchen will operate efficiently. Note that not both exhaust fans are required for hood exhaust. We are open service tech support parts fast lead times from 6 local plants. The duct size is directly proportional to the cfm rating.

The fan manufacturers have sizing charts that allow you to purchase the correct fan to match the size of your kitchen. The general size and rule of thumb for mua is a 6 hood or larger or 2000 cfm or more of exhaust flow. The size shape length turns and cap on the range hood ductwork adds resistance which reduces the amount of air the vent fan can move requiring additional cfm for the fan. The cubic feet per minute rating is a measure of how much air the fan can exhaust from the kitchen in a minutes time.

Fundamentals of kitchen ventilation a. My kitchen exhaust fan is matched to the size of my kitchen. A grease duct is a duct that is connected to the kitchen exhaust hood and is specifically designed to vent grease smoke and other harmful contaminants from commercial cooking equipment to the outside of a building. Kitchen exhaust grease duct.