Cleanroom Air Changes Calculator

Calculate required air changes per hour for cleanroom classification based on ISO 14644-1 standards.

ISO 3 (Class 1) to ISO 8 (Class 100,000)
Cleanroom length
feet
Cleanroom width
feet
Floor to ceiling height
feet
Sensible heat load in room
Btu/h

Results

Room Volume-ft³
Minimum Air Changes/Hour-ACH
Recommended Air Changes/Hour-ACH
Supply Airflow-CFM
References: ISO 14644-1 - Cleanroom Classification, ASHRAE Applications Ch. 18 - Clean Spaces