Kitchen Hood CFM Calculator
The Kitchen Hood CFM Calculator provides a simplified estimation of the exhaust airflow required for commercial kitchen hoods. It commonly uses a "CFM per linear foot" method, where a factor based on hood type and cooking duty (light, medium, heavy) is multiplied by the length of the hood. This tool is intended for preliminary estimation only, as actual design is complex and governed by codes like the International Mechanical Code (IMC) and NFPA 96. These codes consider specific appliance heat/grease output and hood design for code compliance.
Types of Commercial Kitchen Hoods: Hoods are essential for removing heat, smoke, grease, and odors. Common types include Type I (for grease) and Type II (for heat/condensate). They can be wall-mounted canopies, island canopies, or backshelf/low proximity types. The choice depends on appliances and kitchen layout.
This calculator uses highly simplified generic factors and is for preliminary estimation ONLY. Commercial kitchen ventilation design is complex and governed by strict codes (e.g., IMC Chapter 5, NFPA 96). Actual CFM requirements depend on specific appliance types, heat and grease loads, hood design (listed vs. unlisted, capture efficiency), and local jurisdiction requirements. Always consult the relevant codes, manufacturer data, and a qualified mechanical engineer specializing in commercial kitchen ventilation for system design and code compliance. Make-up air is also a critical component and must be designed correctly.