
Air Change Rate Calculator
Adicot, Inc.'s Air Change Rate Calculator is a powerful tool for calculating the air changes per hour (ACH) in a room or building. Our calculator is easy to use and provides accurate results for a variety of applications. Whether you're an engineer, architect, or building owner, our calculator can help you determine the ventilation needs of your space.
Instructions:
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Select English or SI Units
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Select Input Criteria - the calculator will solve for the other value.
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Air Flow Rate
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Air Change Rate
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Enter the room height
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Select how to enter the room area:
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Enter the area directly
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Enter the length and width of the room
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Click the Calculate button
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The results will be displayed in the results window
Methodology:
Q = ACH x V / C
ACH = Q / V x C
where: Q = Aif flow rate, CFM [l/s]
ACH= Air change rate, 1/hr
V = Room Volume ft^3 [m^3]
C= 60 min/hr [3.6 m^3 x sec /l/hr]