Kitchen Exhaust Fan Sizing

If your kitchen is 12 x 15 and 10 high that equals 1 800 cubic feet. The information presented is applicable to new construction and in many instances retrofit construction. So if you have a 30 wide stove you would need a range hood with a fan that moves at least 250 cfm of air.

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Read on to determine how to size your exhaust and supply fans.

Kitchen exhaust fan sizing. This page is designed to be a general guide for selecting an exhaust fan based on the size of the room and the type of application the fan will be used for. 2 5 wide stove x 100 250 cfm minimum range hood fan size. Therefore the proper mua fan for 4000 cfm of exhaust would be about 3400 cfm. A range hood should exchange the air in the kitchen 15 x per hour.

The distance from the exhaust above the stove to fan on the outside wall is 14 feet and there are 3 x 90 degree bends to get to the outer wall to vent. 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. Once the exhaust fan application is known keep in mind these four parameters to choose the right one for the job. Range hood fan size.

All you need to do is select the application from the dropdown enter the size of the room and we will provide you with a general capacity range m3 hr that you should be looking to achieve from the extraction fan. Note that not both exhaust fans are required for hood exhaust. 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. The information contained in this article is intended for general information purposes only and is based on information available as of the initial.

Sizing an exhaust fan use this table to calculate the cubic feet per minute cfm capacity needed for an exhaust fan in a specific room. Here s a helpful example. 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. The general rule of thumb is about 85 of exhaust.

This design guide reviews the fundamentals of kitchen. Sizing an upblast or exhaust fan. For bathrooms over 100 square feet exhaust fans can be sized according to the number of fixtures in the room. The minimum allowed fan size is 50 cfm so if your bathroom is for example only 42 square feet you still need a 50 cfm fan.

To find the size of fan needed multiply the cubic feet x the of air exchanges 15 then divide by 60 minutes in an hour. To calculate using this formula add up the required cfm ratings for all of the. Sizing for large bathrooms. What size cfm remote kitchen exhaust fan should i use to properly vent a 4 burner gas cooktop.

Restaurant grease and heat hood sizing guide. To ensure that all of the smoke grease or odors get pulled out of the kitchen it is necessary to have a little negative pressure. A ventilation fan should meet at least the minimum standard cfm to provide proper exhaust. For more thorough information on this topic view ventilation fundamentals pdf.