Evaporative Cooler CFM Calculator


About Evaporative Cooler CFM Calculator (Formula)

The Evaporative Cooler CFM Calculator is a tool used to determine the required airflow capacity (measured in cubic feet per minute, or CFM) for an evaporative cooler. It helps in selecting the appropriate cooler size based on factors such as the desired cooling capacity, room size, and environmental conditions.

The formula for calculating the CFM for an evaporative cooler is as follows:

CFM = (Air Changes per Hour * Room Volume) / 60

Let’s break down each component of the formula:

  1. CFM: This represents the required airflow capacity for the evaporative cooler, measured in cubic feet per minute (CFM). It indicates the volume of air that needs to be circulated by the cooler to achieve the desired cooling effect.
  2. Air Changes per Hour: This refers to the number of times you want the entire volume of air in the room to be replaced with fresh air in one hour. It depends on factors like the desired cooling level, room occupancy, and environmental conditions. It is typically expressed as a whole number.
  3. Room Volume: This represents the total volume of the room or space to be cooled, calculated by multiplying the room’s length, width, and height. It is typically measured in cubic feet (ft³) or cubic meters (m³).

By multiplying the air changes per hour by the room volume and dividing the result by 60, you can calculate the required CFM for the evaporative cooler.

It’s important to note that this formula provides an estimate and may need adjustment based on factors such as the climate, insulation level, and heat load of the room. Additionally, it’s recommended to consult the manufacturer’s guidelines or consult with professionals to ensure accurate sizing and selection of an evaporative cooler for specific cooling needs and environmental conditions.

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