Commercial Kitchen Hood Exhaust Duct Size

These excel programs are used in sizing exhaust hoods air volume flow and capture velocities free exhaust hood calculator.

Commercial kitchen hood exhaust 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. The length of overlap for overlapping duct joints shall not exceed 2 inches 51 mm. Minimum duct size of 6 recommended duct size of 8 601 900 cfm. The minimum duct sizes and recommended duct sizes based on a hood fan s cfm rating are as follows.

The difference between the inside cross sectional dimensions of overlapping sections of duct shall not exceed 1 4 inch 6 4 mm. View the kitchen exhaust duct sizing chart below to determine your ductwork diameter based on range hood cfm. A 0 to 400 cfm fan requires a 4 inch minimum duct size but a 6 inch duct is recommended. Note that not both exhaust fans are required for hood exhaust.

Read on to determine how to size your exhaust and supply fans. State of the art stainless steel grease duct systems are nfpa 96 compliant designed to safely convey grease laden vapors from commercial kitchen cooking equipment. Please fill out the following form and we will contact you soon. The basic rule of thumb when determining the fan size of a range hood is that it should move a minimum of 100 cfm of air for every 12 of stove width.

Minimum duct size of 4 recommended duct size of 6 401 600 cfm. 2 5 wide stove x 100 250 cfm minimum range hood fan size. Are you interested in representing captiveaire and selling our products. The general size and rule of thumb for mua is a 6 hood or larger or 2000 cfm or more of exhaust flow.

Minimum duct size of 7 recommended duct size of 8 10. The information presented is applicable to new construction and in many instances retrofit construction. Selecting sizing exhaust hoods is the first design guide in a series that will help you achieve optimum performance and energy efficiency in your commercial kitchen ventilation system. This design guide reviews the fundamentals of kitchen.

With the calculation sheets below you will be able to design the kitchen hoods according to ashrae and greenheck. Excel sheets for the design of and sizing of kitchen hoods. 16 2 please refer to the duct diameter sizing chart by hood size and cfms.