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DownloadCleanroom HVAC Design Calculator
Some readings that may be of interest to you:
- CLEANROOM CLASSIFICATIONS (ISO 8, ISO 7, ISO 6, ISO 5)
- HOW CLASSIFICATION IMPACTS THE DESIGN OF A CLEANROOM
- COST OF A CLEANROOM PER SQUARE FOOT
- HVAC DESIGN FOR CLEANROOMS
HOW DOES THE CLEANROOM CALCULATOR WORK?
For every classified room (ISO 8, ISO 7, ISO 6, ISO 5) in your cleanroom project (anteroom/gowning room, clean zone, etc.), complete a separate row in the table with:
- Room length (ft)
- Room width (ft)
- Room height (ft)
- Cleanroom class (ISO 8, ISO 7, ISO 6, ISO 5)
- Process generating particles
- Lighting level
What can you determine with our cleanroom calculator tool?
- Total airflow in cubic feet per minute (CFM) needed for the cleanroom project
- Air changes per hour (ACH) per classified room (ISO 8, ISO 7, ISO 6, ISO 5)
- Quantity of low air returns
- Quantity of HEPA filters
- Quantity of lighting fixtures
CLEANROOM CFM CALCULATOR
For the calculation, we assume 10 to 30 air changes per hour (ACH) for an ISO 8; 30 to 65 ACH for an ISO 7; 80 to 150 ACH for an ISO 6; 200 to 450 ACH for an ISO 5. If there is a significant generation of particles in the process, we use the higher number in the range.
Disclaimer: This is a rule of thumb only. A lot of aspects are not taken into consideration for the calculation, including but not limited to, heat gain, number of people, the use of a fume hood, etc. Clean room HVAC design calculations should be computed by a clean room HVAC specialist.
If you want help with your clean room design calculation or you want to receive a more detailed price per square foot, fill out a request for quote and one of our experts will contact you.
Use a separate table for every classified room in your clean room project (anteroom/gowning room, clean zone, etc.) by clicking on “+Add a room”. Once you are done, click “Calculate”.
Classified Room 1
DeleteCeiling height is usually 8 or 9 feet high.This estimation tool is not suitable for ceiling height over 10 feet.
In drug compounding, ISO 5 is usually reached inside the laminar airflow workbench (LAFW) located in a classified ISO 7 class cleanroom. Therefore, for this particular application, a classified ISO 5 room is not necessary.
This estimation tool is not suitable for an ISO 5 class cleanroom or lower. A different and more complex calculation is required along with the use of unidirectional airflow. Contact our expert to discuss your project.
Results
| Room | Air changes per hour (ACH) | Quantity of lighting fixtures(a lighting fixture = 4 fluorescent ballasts) | Quantity of HEPA filters(600 CFM per filter) | Quantity of low air returns(500 CFM per filter) |
|---|---|---|---|---|
| Classified Room 1 | ||||
| Total Quantity | ||||
| Total CFM needed | ||||
Ceiling height is usually 8 or 9 feet high.This estimation tool is not suitable for ceiling height over 10 feet.
In drug compounding, ISO 5 is usually reached inside the laminar airflow workbench (LAFW) located in a classified ISO 7 class cleanroom. Therefore, for this particular application, a classified ISO 5 room is not necessary.
This estimation tool is not suitable for an ISO 5 class cleanroom or lower. A different and more complex calculation is required along with the use of unidirectional airflow. Contact our expert to discuss your project.