Kitchen Vent Desk is a set of free worksheets for people who design, run or study commercial kitchen ventilation. You can estimate hood exhaust airflow by hood length, appliance list or opening velocity, size a canopy hood, balance exhaust against make-up air and work out its heating load, find air changes per hour, check grease duct velocity against limits you type, add up system static pressure and estimate exhaust fan power. Explainer pages cover Type I and Type II hoods, ventless hoods and what NFPA 96 covers, and printable sheets help with cleaning schedules and questions for your authority having jurisdiction. The tools never reproduce building-code or NFPA tables: you enter the factors your hood maker, code or designer requires. Nothing here replaces a licensed engineer, the equipment maker’s instructions or your AHJ.
Commercial Kitchen Hood and Ventilation Worksheets
Work through hood airflow, make-up air, duct velocity and fan power with the formulas shown. Estimates and teaching worksheets, not engineering documents.
Start here: Kitchen Exhaust Fan Size Calculator
Kitchen exhaust fan cfm by room ACH, cooktop width and Btu/h