CFM Calculator

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Length of Area (feet)
Width of Area (feet)
Height of Area (feet)
Frequency of Desired Air Change (minutes)
L x W x H / Minutes
 
CFM Required For Desired Results

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EXHAUST / INTAKE VENTILATION GUIDE @ O" SP
CFM = Room Volume / Minutes Per Air Change  |  Room Volume = L x W x H (room dimensions)
Minute Air Change Chart For Commercial And Industrial Applications
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TYPICAL
RANGE
Assembly
(6)
2-10
Auditoriums
(6)
1-20
Bakeries
(2)
1-3
Banks
(6)
3-10
Bars
(4)
2-5
Barns
(15)
10-20
Boiler Rooms
(2)
1-3
Bowling Alley
(3)
1-5
Cafeteria
(4)
3-5
Churches
(6)
2-10
Classrooms
(6)
4-8
Compressor Rooms
(2)
1-3
Dance Halls
(6)
2-10
Dairies
(4)
2-5
Dormitories
(6)
4-8
Dry Cleaning Plant
(3)
1-5
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TYPICAL
RANGE
Engine Rooms
(3)
1-5
Factories
(7)
4-10
Foundries
(5)
2-8
Garages
(7)
4-10
Generating Plants
(4)
2-5
Glass Plants
(2)
1-3
Gymnasiums
(6)
2-10
Hallways
(8)
4-12
Kitchens (Comm.)
(3)
1-5
Laboratories
(3)
1-5
Libraries
(4)
2-5
Laundries
(2)
1-3
Locker Rooms
(6)
2-10
Machine Shops
(4)
2-5
Markets
(6)
2-10
Mills
(4)
2-5
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TYPICAL
RANGE
Packing Houses
(4)
3-5
Plants
(7)
4-10
Plating Plants
(4)
2-5
Print Shops
(7)
4-10
Restaurants
(6)
2-10
Rest Rooms
(7)
4-10
Schools
(7)
4-10
Stores
(7)
4-10
Theaters
(6)
4-8
Transformer Rooms
(3)
1-5
Turbine Rooms
(4)
2-5
Waiting Rooms
(12)
10-15
Warehouses
(7)
4-10
Welding Rooms
(3)
1-4
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