HVAC Air Change Out Frequency (minutes)


HVAC Systems & Components
Heating Ventilating Air Conditioning HVAC

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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