Our user-friendly Air Change Calculator is a powerful tool to help you determine the ideal ventilation rate for your specific space. Designed for simplicity, this calculator takes into account the number of occupants in your room and calculates the recommended air changes per hour based on widely accepted industry standards. You can easily tailor the ventilation rate to match your occupancy level, ensuring that your indoor air quality remains optimal, whether the space is bustling with activity or has a lighter footfall. Below, you’ll find a comprehensive reference of recommended air change rates for various room types, making it easy to ensure the health and comfort of your occupants. With our calculator and the guidance provided, you’re well-equipped to maintain a healthy and comfortable indoor environment while optimizing energy efficiency. The comprehensive list of recommended air change rates for various room types serves as a valuable reference, ensuring that you have the right information at your fingertips to make informed decisions about your ventilation needs. Whether you’re a building manager, engineer, or anyone concerned with indoor air quality, this tool simplifies the process of tailoring ventilation rates to match your specific requirements, contributing to a safer and more comfortable living or working environment.
| 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+ |