HVAC Air Change Out Frequency (minutes)

HVAC Air Change Out Frequency (minutes)

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The following are general recommendations for total volume of air change out for selected type indoor air spaces.

HVAC Space Definition	Air Change Out Frequency (minutes)
Assembly Halls	3-10
Auditoriums	4-15
Bakeries	1-3
Boiler Rooms	2-4
Bowling Alleys	2-8
Dry Cleaners	1-5
Engine Rooms	1-1.5
Factories (General)	1-5
Forges	1-2
Foundries	1-4
Garages	2-10
Generating Rooms	2-5
Glass Plants	1-2
Gymnasiums	2-10
Heat Treat Rooms	0.5-1
Kitchens	1-3
Laundries	2-5
Locker Rooms	2-5
Machine Shops	3-5
Mills (Paper)	2-3
Mills (Textile)	5-15
Packing Houses	2-15
Recreation Rooms	2-8
Residences	2-5
Restaurants	5-10
Retail Stores	3-10
Shops (General)	3-10
Theaters	3-8
Toilets	2-5
Transformer Rooms	1-5
Turbine Rooms	2-6
Warehouses	2-10

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