HVAC Air Change Out Frequency (minutes)
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 |