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FAN CFM CALCULATOR
Questions? call 866-727-1060

ft.
Length of Room
ft.
Width of Room
ft.
Height of Room
min.
Frequency of Air Change
W x L x H / Minutes
CFM
Fan(s) CFM Required

Note: You need to have Javascript enabled on your browser for the calculator to work.
EXHAUST / INTAKE VENTILATION GUIDE @ O" SP
CFM REQUIRED FOR VENTILATION = BUILDING CUBE / MINUTES PER AIR CHANGE
MINUTE AIR CHANGE CHART FOR COMMERCIAL AND INDUSTRIAL APPLICATION
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TYPICAL
RANGE
--
TYPICAL
RANGE
--
TYPICAL
RANGE
Assembly
(6)
2-10
Engine Rooms
(3)
1-5
 Packing Houses
(4)
3-5
Auditoriums
(6)
1-20
Factories
(7)
4-10
 Plants
(7)
4-10
Bakeries
(2)
1-3
Foundries
(5)
2-8
 Plating Plants
(4)
2-5
Banks
(6)
3-10
Garages
(7)
4-10
 Print Shops
(7)
4-10
Bars
(4)
2-5
Generating Plants
(4)
2-5
 Restaurants
(6)
2-10
Barns
(15)
10-20
Glass Plants
(2)
1-3
 Rest Rooms
(7)
4-10
Boiler Rooms
(2)
1-3
Gymnasiums
(6)
2-10
 Schools
(7)
4-10
Bowling Alley
(3)
1-5
Hallways
(8)
4-12
 Stores
(7)
4-10
Cafeteria
(4)
3-5
Kitchens (Comm.)
(3)
1-5
 Theaters
(6)
4-8
Churches
(6)
2-10
Laboratories
(3)
1-5
 Transformer Rooms
(3)
1-5
Classrooms
(6)
4-8
Libraries
(4)
2-5
 Turbine Rooms
(4)
2-5
Compressor Rooms
(2)
1-3
Laundries
(2)
1-3
 Waiting Rooms
(12)
10-15
Dance Halls
(6)
2-10
Locker Rooms
(6)
2-10
 Warehouses
(7)
4-10
Dairies
(4)
2-5
Machine Shops
(4)
2-5
 Welding Rooms
(3)
1-4
Dormitories
(6)
4-8
Markets
(6)
2-10
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--
--
Dry Cleaning Plant
(3)
1-5
Mills
(4)
2-5
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Industrial Fans Direct
6320 Evergreen Way, Ste 101
Everett, WA 98203
Sales: 866-727-1060
Support: 425-438-0990
Fax: 425-353-9058
FED ID: 91-2165236
D-U-N-S: 14-348-3340
 
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