Our Air Change Calculator offers recommended air changes per hour for various room types, allowing you to enhance indoor air quality and customize your ventilation strategies. Simply select the room type to find the ideal air change rate tailored to your specific needs. It’s a practical tool for ensuring healthier and more comfortable indoor environments.
The calculated value gives the minimum value required. See list below for further clarification.
The table provided below serves as a valuable resource, presenting meticulously curated reference values for air volume allocation, thoughtfully categorized by the specific usage of various rooms, all in accordance with the esteemed DIN 1946 part 2 guidelines. These standards, meticulously crafted by the prestigious German Institute for Standardization (Deutsches Institut für Normung, DIN), have garnered widespread recognition and acceptance on a global scale. Their comprehensive and meticulously researched nature ensures that these air volume values are applicable and relevant in diverse contexts worldwide, offering a reliable and internationally acknowledged foundation for ventilation planning and optimization
| Building / Room | Number of Air Changes per Hour |
|---|---|
| All spaces in general | 4 |
| Assembly Halls | 4-8 |
| Attic spaces for cooling | 12-15 |
| Auditoriums | 12-15 |
| Bakeries | 20-30 |
| Banks | 4-10 |
| Barber Shops | 6-10 |
| Bathrooms | 3-8 |
| Bars | 20-30 |
| Beauty Shops | 6-10 |
| Boiler Rooms | 15-30 |
| Bowling Alleys | 10-15 |
| Cafeterias | 12-15 |
| Chemical Stores | 5+ |
| Churches | 8-15 |
| Classrooms | 6-20 |
| Club Rooms | 12+ |
| Clubhouses | 20-30 |
| Cocktail Lounges | 20-30 |
| Computer Rooms | 15-20 |
| Court Houses | 4-10 |
| Cellars | 3-10 |
| Commercial Kitchens | 30+ |
| Compressor Rooms | 10-20 |
| Conference Rooms | 8-12 |
| Dairies | 8-12 |
| Dance Halls | 6-9 |
| Dental Centers | 8-12 |
| Pharmacies | 6-10 |
| Engine Rooms | 15-30 |
| Entrance Halls & Corridors | 3-5 |
| Factory Buildings | 2-4 |
| Factory Buildings with Fumes/Moisture | 10-15 |
| Fire Stations | 4-10 |
| Foundries | 15-20 |
| Fume Cupboards | 40-50 |
| Galvanizing Plants | 20-30 |
| Garages (Repair) | 20-30 |
| Garages (Showroom) | 6-8 |
| Garages (Storage) | 4-6 |
| Gyms | 6+ |
| Hospital Rooms (Sterilizing) | 15-20 |
| Hospital Rooms (Wards) | 6-8 |
| Hospital Rooms (X-Ray) | 10-15 |
| Kitchens (General) | 15-60 |
| Laboratories | 6-15 |
| Laundries | 10-20 |
| Lunch Rooms | 12-15 |
| Nightclubs | 20-30 |
| Machine Shops | 6-12 |
| Medical Centers | 8-12 |
| Medical Clinics | 8-12 |
| Medical Offices | 8-12 |
| Mills (Paper) | 15-20 |
| Mills (Textile General Buildings) | 4 |
| Mills (Textile Dye Houses) | 15-20 |
| Municipal Buildings | 4-10 |
| Museums | 12-15 |
| Offices (Public) | 3+ |
| Offices (Business) | 6-8 |
| Office Lunch Rooms | 7-8 |
| Office Copy Rooms | 10-12 |
| Office Computer Rooms | 10-14 |
| Paint Shops | 10-15 |
| Paper Mills | 15-20 |
| Photo Dark Rooms | 10-15 |
| Pig Houses | 6-10 |
| Police Stations | 4-10 |
| Post Offices | 4-10 |
| Poultry Houses | 6-10 |
| Precision Manufacturing | 10-50 |
| Public Buildings (Hallways) | 6-8 |
| Public Foyers | 8-10 |
| Public Restrooms | 10-12 |
| Public Smoking Rooms | 15-20 |
| Pump Rooms | 5+ |
| Railroad Shops | 4+ |
| Residences | 1-2 |
| Restaurants (Dining Area) | 8-10 |
| Restaurants (Food Staging) | 10-12 |
| Restaurants (Kitchens) | 30+ |
| Restaurants (Bars) | 15-20 |
| Retail | 6-10 |
| School Classrooms | 6-20 |
| Shoe Shops | 6-10 |
| Shopping centers | 6-10 |
| Shops (Machine) | 5+ |
| Shops (Paint) | 15-20 |
| Shops (Wood Working) | 5+ |
| Showers (Public) | 10+ |
| Showers (Private) | 6 |
| Substation (Electric) | 5-10 |
| Supermarkets | 4-10+ |
| Swimming Pools | 20-30 |
| Taverns | 20-30 |
| Textile Mills | 4+ |
| Toilets (Public) | 6-15 |
| Town Halls | 4-10 |
| Theatres | 8-15 |
| Turbine Rooms (Electric) | 5-10 |
| Waiting Rooms (Public) | 4 |
| Warehouses | 6-30+ |
| Wood Working Shops | 8+ |